Observational extragalactic astronomy - List of Publications

 INSTITUTE of ASTRONOMY with NAO

department of astronomy- Sofia University

Summary: 339 publications in observational extragalactic study 1979 - 2010

 

1979  – 5 papers

1.     PETROV G.T.  /25.158.162/    Astrofizika, v.15, 59-65, 1979 (in russian).    Dependence of emission line luminosities of type-1 Seyfert  galaxies upon colour index.

2.     PETROV G.T.  /25.158.243/    Pis'ma AJ, v.5, 267-270, 1979 (in russian).     Physical conditions in the nuclei of galaxies with emission  lines.

3.     PETROV G.T.  /27.158.203/    Astrofizika, v.15, 383-392, 1979 (in russian).     Physical conditions in the nuclei of Seyfert galaxies of type 1.

4.     PETROV G.T.  /27.158.274/    C.r.A.S. Armenia SSR, v.69, 52-56, 1979 (in russian).     Contents  of the ions and  chemical abundances in  the nuclei  of type 1 Seyfert galaxies and broad lines radio galaxies.

5.     PETROV G.T.    Yought Astrophysicists Conference, 2-5 oct.,1979, Bjurakan.    Abundances in the Radio- and Seyfert galaxies.

1980 – 9 papers

1.     GOLEV V.K., YANKULOVA I.M., PETROV G.T.  /28.158.083/    Pis'ma AJ, v.6, 554-558, 1980 (in russian).    Preliminary spectrophotometric investigation of the nucleus of  the galaxy NGC 5929.

2.     PETROV G.T.  /28.158.113/    C.r.A.S. Armenia SSR, v.70, 46-49, 1980 (in russian).    Ion abundance  and chemical  composition in  the nuclei  of  type 2 Seyfert galaxies and narrow lines radio galaxies.

3.     YANKULOVA I.M., GOLEV V.K., PETROV G.T.  /28.158.157/   Pis'ma AJ, v.6, 691-695, 1980 (in russian).    Phisical conditions in the nucleus of the galaxy Mrk 534.

4.     YANKULOVA I.M., PETROV G.T., GOLEV V.K.  /28.158.281/    C.r. Acad.Sci.Bulg., v.33, 1297-1300, 1980.    Preliminary spectrophotometric investigation of the nucleus of the galaxy NGC 5929.

5.     PETROV G.T., GOLEV V.K., YANKULOVA I.M.  /30.134.026/   Astr. Tsirc. No.1133, 1-2,1980 (in russian).    Abundances of  some ions  in diffuse  nebulae. I.  Galactic diffuse nebulae.

6.     GOLEV V.K., YANKULOVA I.M., PETROV G.T.  /30.134.027/    Astr. Tsirc. No.1133, 2-4,1980 (in russian).    Abundances of some ions in diffuse nebulae. II. Diffuse nebulae in nearby galaxies.

7.     GOLEV V.K., PETROV G.T., YANKULOVA I.M.  /30.158.122/    C.r. Acad.Sci.Bulg., v.33, 1033-1036, 1980 (in russian).    Spectrophotometric investigation and phisical conditions in the nucleus of the galaxy Mrk 534.

8.     PETROV G.T.,GOLEV V.K., YANKULOVA I.M.  /30.158.255/    Astr.Tsirc. No.1143, 1-3, 1980 (in russian).     Spectrophotometry of the nuclei  of the emission line  galaxies NGC 7463, Mrk 313, 531 and III Zw 103.

9.     1980SoByu..52....3V  Vardanian, R. A.; Tomov, A. N.  Observations of E-type double galaxies

1981 – 8 papers

1.     1981AZh....58..925D  Demin, V. V.; Dibay, E. A.; Tomov, A. N.  UBV photometry of double galaxies – The catalog

2.     1981IBVS.1912....1S  Sharov, A. S.; Ivanov, G. R.  Possible Hubble-Sandage Objects among Variables Discovered in the Andromeda Galaxy
3.     1981PAZh....7..259E  Efremov, Y. N.; Ivanov, G. R.  High-luminosity stars and the structure of a spiral arm in M31

4.     YANKULOVA I.M., PETROV G.T., GOLEV V.K.  /30.134.017/    Astroph.Invest.(Bulg.AS), v.3, 89-94, 1981 (in russian).    Physical conditions and abundance of some ions in diffuse nebulae.

5.     PETROV G.T.,GOLEV V.K., YANKULOVA I.M.  /30.134.280/    C.r. Acad.Sci.Bulg., v.34, 461-464, 1981.    Physical conditions in the double galaxies with emission lines. Mrk 171a,b.

6.     PETROV G.T., YANKULOVA I.M., GOLEV V.K.  /31.158.124/    Astrofizika, v.17, 43-51, 1981 (in russian).    Physical conditions in the nuclei of the emission line galaxies.

7.     YANKULOVA I.M., PETROV G.T., GOLEV V.K.  /31.158.138/    Astr. Tsirc. No.1169, 1-3,1981 (in russian).    Some spectrophotometric data about the double galaxy NGC 3690 + IC 694.

8.     MINEVA V.A., PETROV G.T., KOVACHEV B.J.  /32.158.154/    C.r. Acad.Sci.Bulg., v.34, 1629-1632, 1981.    Spectrophotometric study of galaxies with high surface brightness. I. Arakelian 144.

1982 – 6 papers

1.     MINEVA V.A., PETROV G.T., GOLEV V.K., TSVETANOV Z.I.  /31.158.138/    Pis'ma AJ, v.8, 210-213, 1982 (in russian).    Spectrophotometry of the nucleus of the galaxy Arakelian 144.

2.     PETROV G.T., MINEVA V.A., GOLEV V.K., TSVETANOV Z.I.  /32.158.301/    Astr. Tsirc. No.1202, 4-5,1982 (in russian).    Spectrophotometry of the nucleus of the galaxy Arakelian 583.

3.     PETROV G.T., MINEVA V.A., GOLEV V.K.  /32.158.333/    C.r. Acad.Sci.Bulg., v.35, 137-140, 1982.    Spectrophotometric study of galaxies with high surface brightness. II. Arakelian 583.

4.     KYAZUMOV G.A., PETROV G.T., GOLEV V.K., TSVETANOV Z.  /33.157.215/    C.r. Acad.Sci.Bulg., v.35, 1181-1184, 1982.    NGC 6503  - rotation,  mass and  physical conditions  in the Galaxy nucleus.

5.     PETROV G.T., KOVACHEV B.J., MINEVA V.A.,  /33.158.120/    C.r. Acad.Sci.Bulg., v.35, 725-728, 1982.    Physical conditions in the galaxy nuclei with emission lines. Mark 558.

6.     1982Ap&SS..86..117E  Efremov, I. N.; Ivanov, G. R.  The gradient of the brightest star age and density across the spiral arm S4 in the Andromeda galaxy
1983 – 7 papers

1.     1983ATsir1296....1T  Tomov, A. N.  UBV photometry of some double galaxies.

2.     1983ATsir1296....2T  Tomov, A. N.; Tomov, N. A.  UBV Photometry of Triple Galaxies

3.     1983BlDok..36..165T  Tomov, A. N.  Comparison between 'normal' double and single galaxies

4.     1983BlDok..36..405T  Tomov, A. N.  Surface brightness in double SS-type galaxies

5.     1984AdSpR...3..345T  Tsvetanov, Z. I.; Zhekov, S. A.  On kinematics of gas clouds in the broad-line region of active galactic nuclei and quasars

6.     MINEVA V.A., PETROV G.T., KOVACHEV B.J.  /34.158.196/    C.r. Acad.Sci.Bulg., v.36, 713-716, 1983.    Physical conditions in the nucleus of the Seyfert galaxy NGC 7469. II. Spectrophotometric investigation.

7.     PETROV G.T., MINEVA V.A., KOVACHEV B.J., KYAZUMOV G.  /34.157.195/    C.r. Acad.Sci.Bulg., v.36, 717-719, 1983.    Rotation, mass and physical conditions in the nucleus of the spyral galaxy NGC 7537.

1984 – 12  papers

1.     GOLEV V.K., YANKULOVA I.M., PETROV G.T.  /37.158.250/    Adv.Space Res., v.3, 235-237, 1984.    On  the  physical  state  in  the  narrow-line  region of Classical Seyfert galaxy NGC 7469.

2.     PETROV G.T., YANKULOVA I.M., GOLEV V.K.  /38.157.193/    C.r. Acad.Sci.Bulg., v.37, 411-414, 1984.    Nuclear H II regions in galaxies with emission lines.

3.     GOLEV V.K., PETROV G.T., TSVETANOV Z.I.  /38.158.012/    Astr. Tsirc. No.1292, 1-3,1983 (in russian).    The Hubble  diagram and  the luminosity  distribution of  Arakelian galaxies.

4.     GOLEV V.K., TSVETANOV Z.I., PETROV G.T.  /38.158.099/   C.r. Acad.Sci.Bulg., v.37, 15-18, 1984.    On the space density of the Arakelian galaxies.

5.     GOLEV V.K., YANKULOVA I.M., PETROV G.T.  /38.158.196/    C.r. Acad.Sci.Bulg., v.37, 549-551, 1984.    On  the  physical  state  in  the  narrow-line  region of classical Seyfert galaxy NGC 7469.

6.     PETROV G.T., MINEVA V.A., KYAZUMOV G.A.  /40.157.029/    C.r. Acad.Sci.Bulg., v.37, 1287-1289, 1984.    Gas component parameters in the nucleus of the galaxy NGC 5879.

7.     1984ATsir1352....4E  Efremov, Y. N.; Ivanov, G. R.  An Interpretation of Photometric Profile of M31 Along its Major Axis

8.     1984AZh....61..625D  Demin, V. V.; Zasov, A. V.;Dibaj, E. A.; Tomov, A. N.  Color correlations between paired galaxies - The Holmberg effect

9.     1984BlDok..37..415T  Tomov, A. N.  UBV observations of double galaxies

10.  1984BlDok..37..419T  Tomov, A. N.; Tomov, N. A.  Electrophotometry of isolated triple galaxies

11.  1984BlDok..37..703T  Tomov, A. N.  Certain cosmological considerations with binary galaxies

12.  1984IBVS.2532....1I  Ivanov, G. R.; Chakurov, I. R.  On Three Cepheids in M33

1985 – 18 papers

1.     PETROV G.T., KOVACHEV B.J., MINEVA V.A.  /40.157.134/    Ap & Spa.Sci., v.116, 333-340, 1985.    Some spectrophotometric data for 31 galaxies from Karachentsev list.

2.     PETROV G.T., MINEVA V.A., KYAZUMOV G.A.  /40.157.137/    C.r. Acad.Sci.Bulg., v.38, 291-294, 1985.    Rotation, mass and physical conditions in the nucleus of the spyral galaxy NGC 7339 (Karachentsev 570b ).

3.     PETROV G.T., MINEVA V.A., KYAZUMOV G.A.  /41.157.132/    C.r. Acad.Sci.Bulg., v.38, 699-702, 1985.    Physical conditions in the galaxy  nuclei  with emission lines. Rotation, mass  and parameters  of the  nucleus of  the galaxy NGC 1084.

4.     MARKOV KH.S., ZHEKOV S.A., PETROV G.T., TSVETANOV Z.  /41.158.178/    Astr. Tsirc. No.1378, 1-3,1985 (in russian).    Spectra of galaxies obtained with "ROZHEN" 2-m telescope of the Bulgarian Academy of Sciences.

5.     GOLEV V.K., TSVETANOV Z.I., PETROV G.T.  /42.158.108/    Astr.Invest.(Bulg.AS), v.4, 95-105,1985 (in russian).    Results of a spectroscopic investigation of some Arakelian galaxies.

6.     MARKOV KH.S., GOLEV V.K., TSVETANOV Z., PETROV G.T.  /42.158.109/    Astr.Invest.(Bulg.AS), v.4, 106-110,1985 (in russian).    Morphological investigations of galaxies  with  high  surface brightness. II.  Arakelian 26, 27, 28, 31, 32 and 79.

7.     1985aimo.conf...41G  Georgiev, T. B.; Bilkina, B. I.; Ivanov, G. R  On surface photometry of M31 with a 50/70-cm Schmidt telescope.

8.     1985Ap&SS.110..357I  Ivanov, G. R.   The structure of the spiral arm S4 in Andromeda galaxy - A contribution to the theory of density waves
9.     1985Ap&SS.115..409I  Ivanov, G. R.   A new 75-day Cepheid in M31

10.  1985AsIss...4...86T  Tomov, A. N.  The electrophotometric device at the Belogradchik Astronomical Obervatory.

11.  1985ATsir1373....3I  Ivanov, G.; Kunchev, P.  Parameters of the Spiral Arms in M33
12.  1985ATsir1386....1K  Kunchev, P.; Ivanov, G.  The Association OB:112 in M33 Galaxy
13.  1985BlDok..38..819I  Ivanov, G. R.   Star-formation mechanism in S4 spiral arm of Andromeda galaxy

14.  1985BlDok..38..957G  Georgiev, T. B.; Ivanov, G. R.; Bilkina, B. I  Distribution of surface strength transversal to spiral arms in Andromeda Galaxy

15.  1985DoBAN..38..823Z  Zlatev, S. S.; Ivanov, G. R.  A criterion determining the association limits in the Andromeda galaxy.
16.  1985IBVS.2666....1I  Ivanov, G. R.; Kourtev, R.  On the Type of Variability of the Star H42 in the Andromeda Galaxy

17.  1985PAZh...11..178G  Georgiev, T. B.; Ivanov, G. R.  Surface-brightness distribution across M31 arm S4

18.  1985PAZh...11..737I  Ivanov, G. R.; Kunchev, P. Z.  Stellar associations in M31 arm S4

1986  – 13 papers 

1.     1986AN....307..379I  Ivanov, G. R.; Kunchev, P. Z.  Distribution of luminous blue stars in M 33
2.     1986Ap&SS.122..235K  Kunchev, P. Z.; Ivanov, G. R.  A photometric study of the bright stars in M33
3.     1986Ap&SS.124..329I  Ivanov, G. R.; Sharov, A. S.  On the 75-day Cepheid and the envelope of the period-amplitude diagram in M31
4.     1986ATsir1426....3T  Tasheva, R. P.; Ivanov, G. R.  On the Accuracy of Photographic Photometry at the 2-METER Nao-Rogen Telescope
5.     1986ATsir1435....1K  Kourtev, R. G.; Ivanov, G. R.  UBV Photometry of the Spiral Arm S:5 in M31
6.     1986ATsir1435....4I  Ivanov, G.; Kunchev, P.  On the Distance Modulus of M33 Galaxy
7.     1986ATsir1435....6I  Ivanov, G.; Nedyalkov, P.; Kunchev, P.  The Distribution of the Stars across the Spiral Arm n4 in M31 Galaxy
8.     1986ATsir1473....3I  Ivanov, G.; Kunchev, P.; Golev, V.; Parov, I.  On M33 Nucleus Activity
9.     1986BlDok..39R...5K  Kunchev, P. Z.; Ivanov, G. R.  On the characteristics of the high luminosity OB stars in M33 galaxy
10.  1986DoBAN..39R...9I  Ivanov, G. R.   On the arm pattern of M33.
11.  1986IAUS..116..389E  Efremov, Y. N.; Ivanov, G. R.; Nikolov, N. S.  New Stellar Associations in M31
12.  1986IAUS..116..419I  Ivanov, G. R.; Kunchev, P. Z.  On the Arm Pattern of M33

13.  PETROV G.T.  /42.157.008/    Ap & Spa.Sci., v.124, 407-433, 1986.    New galaxies with high surface brightness in the Nilson system.

1987 – 8 papers

1.     RUSEV R., PETROV G., RUSEVA T.    Cont. of the Third National Conf. of Optics and Laser Technics.    Varna, may 18-20, 1987. In "Optics'87",p.114 - 118, 1987.    Photographic camera for a 600/7500 mm telescope.Constructions.

2.     1987Ap&SS.129...39E  Efremov, I. N.; Ivanov, G. R.  The luminosity of red supergiants in the Andromeda Galaxy
3.     1987Ap&SS.135..119E  Efremov, I. N.; Ivanov, G. R.;  Nikolov, N. S.  Star complexes and associations in the Andromeda galaxy
4.     1987Ap&SS.135..301G  Golev, V. K.; Ivanov, G. R.; Kunchev, P. Z.  The brightest blue stars in M33 galaxy as unresolved star groups
5.     1987Ap&SS.136..113I  Ivanov, G. R.   Stellar associations and complexes in M33

6.     1987BlDok..40....5T  Tomov, N. A.; Tomov, A. N.  Isolated triple galaxies

7.     1987DoBAN..40...11I  Ivanov, G. R.; Kunchev, P. Z.  On the luminosity of Hubble-Sandage objects in the M31 galaxy.

8.     1987DoBAN..40Q...5T  Tomov, A. N.; Todorova, M. T.  Electrophotometry of narrow double galaxies.

1988   – 10 papers

1.     1988astr.conf..162G  Georgiev, T. B.  Two Digital Filtering Methods and the Spiral Structure of the M 31 Galaxy (With 5 Figures)

2.     1988ATsir1530...11G  Georgiev, T. B.; Bilkina, B. I.  Star Complexes in the Inner Part of M31

3.     1988BlDok..41....5T  Tomov, A. N.; Tomova, M. T.  Electrophotometry of double galaxies

4.     1988PAZh...14..129G  Georgiev, T. B.  The spiral structure of the galaxy M31 in U-light

5.     1988PAZh...14..806G  Georgiev, T. B.  Photometric diagrams of the M 31 galaxy image

6.     1988PAZh...14..811G  Getov, R. G.; Georgiev, T. B.  Observations of low brightness formations in the region of the M 81 and M 82 galaxies

7.     1988PAZh...14..882G  Georgiev, T. B.  Morphological functions of the M 31 galaxy image

8.     PETROV G.T.  /45.158.312/    Astr. Tsirc. No.1480, 3-4,1988 (in russian).    Spectroscopy of the Seyfert galaxy Markarian 609.

9.     PETROV G.T.  /46.158.113/    Ap & Spa.Sci., v.148, 305-341, 1988.    A proposed program of observations of extragalactic X-ray sources.

10.  PETROV G.T., MINEVA V.A.    C.r.Acad.Sci.Bulg., v.41, No.11, 1988.    Masses and rotational momenta of Arakelian galaxies.

1989  – 8 papers

1.     PETROV G.T.  /49.158.123/    Ap & Spa.Sci., v.151, 169-175, 1989.    Star burst activity in High Surface Brightness Galaxies.

2.     PETROV G.T., KYAZUMOV G., KOVACHEV B.J., MINEVA V.A.  /50.157.312/    Astr.Invest.(Bulg.AS), v.5, 3-12, 1989.    Dinamic, mass and physical  characteristics of the spiral Galaxies NGC 1084, 6503, 7339 and 7537.

3.     1989AISof...5...13G  Georgiev, T.; Bilkina, B.; Ivanov, G.  The surface brightness gradients of the Andromeda galaxy

4.     1989AISof...5...23G  Georgiev, T.  Large-scale surface photometry of galaxy M31

5.     1989Ap&SS.159..103I  Ivanov, G. R.; Kunchev, P. Z.; Georgiev, T. B.  The outermost OB associations in M33

6.     1989Ap&SS.162....1N  Nedialkov, P. L.; Kouztev, R. G.; Ivanov, G. R.  The brightest blue and red stars in M31
7.     1989ASSL..157..275I  Ivanov, G. R.   ON the Periodicity of Hubble-Sandage Objects in M 31

8.     1989BlDok..42Q...5T  Tomov, A. N.; Tomov, N. A.  Isolated triple galaxies

1990  – 7 papers

1.     1990BlDok..43....5T  Tomov, A. N.; Tomova, M. T.  Electrophotometry of double galaxies

2.     1990BSAO...32....1G  Getov, R. G.; Georgiev, T. B.  Distribution of the brightnesses and colors of the bulge of galaxy M81.

3.     1990PAZh...16..979G  Georgiev, T. B.; Getov, R. G.; Zamanova, V. I.; Ivanov, G. R.  UBV surface photometry of the associations and estimation of the distance modulus of M51

4.     1990pess.conf..125I  Ivanov, G. R.   A catalogue of blue stars in M33.
5.     1990pess.conf..147I  Ivanov, G. R.   Bright associations in M33.

6.     MINEVA V., PETROV G.    C.r.Acad.Sci.Bulg., v.43, No.3,1990.    Masses and rotational momenta for 47 Seyfert X-ray galaxies.

7.     PETROV G.,YANKULOVA I.    C.r.Acad.Sci.Bulg., v.43, No.11,1990.     Surface brightness and Starformation in Arakelian galaxies.

1991  – 13 papers

1.     PETROV G.    Astr.Invest.(Bulg.AS), v.6,p.3-11, 1991.    CCD-spectra of the galaxy Arakelian 144.

2.     PETROV G., VELICHKOVA K.    Astr.Invest.(Bulg.AS), v.6,p.26-31, 1991.    Gas accretion onto the black hole as an energy source in the Nuclei of the active extragalactic objects.

3.     PETROV G.    C.r.Acad.Sci.Bulg., v.44, No.4, 1991.    Markarian galaxies in the far-infrared - an analysis of IRAS data.

4.     PETROV G.,YANKULOVA I.  /56.158.338/    C.r.Acad.Sci.Bulg., v.44, No.4,1991.    Evidences for high star formation  activity  in  the  Arakelian galaxies. 

5.     PETROV G.    C.r.Acad.Sci.Bulg., v.44,No.5,1991.    Statistical  comparison  of  the  basic  parameters of high surface brightness and normal galaxies.

6.     MINEVA V., PETROV G.  /56.158.339/    C.r., v.44, No.8, 1991.    Masses and  rotational momenta  for 84  Markarian -  and 13 normal galaxies.

7.     1991AISAO..31...29G  Georgiev, T. B.; Ivanov, G. R.  On the Distribution of Blue Stars and Gas in M33

8.     1991AN....312..309R  Richter, G. M.; Schmidt, K.-H.; Thaenert, W.; Stavrev, K.; Panov, K.  Surface photometry of the dwarf galaxy VIIZw009

9.     1991Ap&SS.178..227I  Ivanov, G. R.   The stellar content of associations and star complexes in M33
10.  1991ApInv...6...12I  Ivanov, G. R.   A catalogue of stellar associations in M33

11.  1991BSAO...33..175G  Georgiev, T. B.  Photometric processing of CCD images of galaxies.

12.  1991MNRAS.251..281I  Ivanov, G. R.   Stellar distribution in H II regions of M33

13.  1991PAZh...17..393G  Georgiev, T. B.; Getov, R. G.  Morphology of the M 81 galaxy bulge

1992  – 7 papers 

1.     1992A&AS...96..645I  Ivanov, G. R.; Popravko, G.; Efremov, I. N.; Tikhonov, N. A.; Karachentsev, I. D. Stellar associations and aggregates in NGC 628.
2.     1992ApL&C..28..281I  Ivanov, G. R.   Nonstellar Objects in M33
3.     1992MNRAS.257..119I  Ivanov, G. R.   Stellar associations in M81

4.     PETROV G., MINEVA V.     C.r., v.45, No.  , 1992.    Dependences between some parameters of Active galaxies.

5.     PETROV G., KOVACHEV B.  /56.160.213/    C.r., v.45, No.6, 1992.      A search for galaxies in voids - first results.

6.     PETROV G. & MINEVA V.  /57.157.245/    C.r., v.45, No.8, 1992.      Star Formation in Karachentsev's double galaxies.

7.     KOVACHEV B., PETROV G.    C.r., v.45, No.9, 1992.      Searching of galaxies in voids.

1993  – 7 papers

1.     PETROV G.  /57.131.046/    Ap & Spa.Sci, v.199, 199 - 213, 1993.    An evidence for enchanced star formation in IRAS-detected MrkG.

2.     JANKULOVA I., GOLEV V., PETROV G.  /61.157.164/    Astrofiz. Issled. (Izv. SAO), v.35, 60-75, 1993.    An  evidence  for  enchanced  star  formation rate in IRAS-Detected Arakelian galaxies.

3.     PETROV G.T., STRIGATCHEV A.A.  /61.161.242/    C.r., v.46, No.7, 1993.      A search for galaxies in void 1312 + 35.

4.     PETROV G.T., KOVATCHEV B.J. and STRIGATCHEV A.A.  /58.161.591/    Astronomische Gesellschaft, Abstract Series, v.9, p.46, 1993    Searching of galaxies in voids - first results.

5.     1993A&AT....3..237E  Efremov, Y. N.; Ivanov, G. R.; Nedialkov, P. L  The distribution of bright stars and HII regions in the andromeda nebula.   
6.     1993A&AT....3..237E  Efremov, Y. N.; Ivanov, G. R.; Nedialkov, P. L.  The distribution of bright stars and HII regions in the andromeda nebula
7.     1993ApJS...89...85I  Ivanov, G. R.; Freedman, W. L.; Madore, B. F.  A catalog of blue and red supergiants in M33

1994  – 5 papers

1.     1994IAUS..161..715G  Georgiev, T. B.  Unbiased Multi-Parametric Estimations of Distances and Peculiar Velocities of the Galaxies

2.     LAURIKAINEN E., SALO H., TEERIKORPI P., PETROV G.T.    Astron. Astrophys. Suppl.Ser., v. 108, 491-508, 1994.    Environment of Seyfert galaxies. I. Construcvtion of the sample and selection effects. 

3.     STRIGATCHEV A.A., PETROV G.T.    C.r. Acad. Bulg. Sci. v.47, No.6, 1994    Aperture photometry of faint galaxies. I. Void 1312 + 35.

4.     PETROV G.T., STRIGATCHEV A.A.,Kovachev B.J.     C.r. Acad. Bulg. Sci. v.47, No.6, 1994      Studying of the void 2320+1339.

5.     PETROV G., STRIGATCHEV A.    poster, International scool at NAO Rozhen, april 1994.    Observations of the Double Quasar 0957+561 at NAO Rozhen following the MEGAPHOT collaboration.

1995  – 5 papers

1.     KOVACHEV B., PETROV G., STRIGACHEV A., MINEVA A.    C.r. Acad. Bulg. Sci., v. 48, No.2, 1995.    Preliminary Photometric and Morphological Investigation of Galaxies in PISCES-CETUS  VOID.

2.     STRIGACHEV A., PETROV G.     C.r, v.48, No.11-12, p. 7, 1995.    A Search for Galaxies in voids: VOID 1306 +34,35,36

3.     1995ASPC...71..127G,  Golev, V.; Bonev, T.; Jockers, K.; Yankulova, I.  "Fabry-Perot Imaging of the Seyfert 2 Galaxy NGC 2273"

4.     1995BlJPh..22...18  Golev, V.; Staneva, A.; Spassova, N.  Morphology of the globular clusters in the Andromeda galaxy.

5.     1995MNRAS.273..129G  Golev, V.; Yankulova, I.; Bonev, T.; Jockers, K.  "New narrow-band imaging of the extended emission-line region in the Seyfert galaxy NGC 3516"

1996  – 9 papers 

1.     1996AA305 p 708  Ivanov, G. R.   OB associations in nearby galaxies.

2.     1996A&A...305..708I1996A&AS..116..447,  Staneva, A.; Spassova, N.; Golev, V.  The ellipticities of globular clusters in the Andromeda galaxy.

3.     1996ApInv...7...29I  Ivanov, G.; Toropova, M.  Surface Photometry of the spiral arms of M51
4.     1996IBVS.4411....1N  Nedialkov, P. L.; Tikhonov, N. A.; Kurtev, R. G.; Ivanov, G. R.  New variables in the north-eastern part of M31
5.     1996IBVS.4411....1N  Nedialkov, P. L.; Tikhonov, N. A.; Kurtev, R. G.; Ivanov, G. R.  New variables in the north-eastern part of M31

6.     1996MNRAS.280...29G,  Golev, V.; Yankulova, I.; Bonev, T.  "Narrow-band imaging of the circumnuclear emission-line region of M81"

7.     1996yCat..20890085I  Ivanov, G. R.; Freedman, W. L.; Madore, B. F  Blue and red supergiants in M33 (Ivanov+ 1993)
  1. PETROV G., STRIGACHEV A., MICHOV B.  /66.159.161/   C.r.Acad.Sci.Bulg, v.49, No.1, p.5, 1996.   A lens model of the quasar 2237+0305.
  2. BACHEV R., PETROV G.  C.r.Acad.Sci.Bulg, v. 49, No.7-8, 1996.  On the Black hole masses, accretion rates and unification of Seyfert galaxies.

1997  – 1 papers

  1. PETROV G., KOVACHEV B., ELSAESSER H.   C.r.Acad.Sci.Bulg, v.50, No.11-12 1997 Photometry and morphology of faint galaxies in the direction of  the void 0049+05.

1998  –  4 papers

  1. SLAVCHEVA L., PETROV G., MIHOV B.  C.r.Acad.Sci.Bulg, v.51, No. 1 1998  Spectral analysis of Sefert 1 Galaxies.
    PETROV P., GEORGIEV CH., PETROV G.       Vacuum, v. 51, No.3, p. 339-343, 1998.  Experimental investigation of weld pool formation in electron beem welding. 
3.     1998A&A...337...39I  Ivanov, G. R.   Young massive stellar populations in M 33
4.     1998AstL...24..445S  Sharov, A. S.; Alksnis, A.; Nedialkov, P. L.; Shokin, Y. A.; Kurtev, R. G.; Ivanov, V. D.  Three remarkable novae in M 31

1999 – 17 papers

  1. Bachev, R., Emission lines from illuminated warped accretion disks in AGN, 1999, A&A, 348, 71

2.     Bachev, R., Petrov, G., Slavcheva, L., Mihov, B., Black Hole Masses and Unification of Seyferts, 1999, in Active Galactic Nuclei and Related Phenomena, IAUS. 194, p.311

  1. Bachev, R., Strigachev, A., Petrov, G., Observations at Belogradchick astronomical observatory with the CCD camera ST-8, 1999, Bulg. J. Phys, 26(5-6), 266-272

4.     Bachev, R., Bardeen-Petterson Effect and Broad HI Profiles of Seyferts, IAUS 194, p. 313

  1. Georgiev, L., Borissova, J., Rosado, M., Kurtev, R., Ivanov, G., Koenigsberger, G., The Local Group Dwarf Galaxy IC 1613. The Young Stellar Content, 1999, A&AS, 134, 21
  2. Georgiev L., Kurtev R., Rosado M., Borissova J., The Distance and Reddening of IC 10 from Preliminary JHK Photometry, 1999, Proc. of IAU Symp. 193 Wolf Rayet Phenomena in Massive Stars and Starburst Galaxies, p. 762
  3. Georgiev, T. B., Bilkina, B. I., Dencheva, N. M., Ivanova, R. I., Valchev, T. S., The brightest stars and the distances to the galaxies NGC 1569 and NGC 2337, 1999, Bulg. J. Phys., 26(1–2), 87-96

8.     Mihov, B. M., Bachev, R. S., Strigachev, A. A, Slavcheva, L. S., Petrov, G. T., Photometric Monitoring of Selected Quasars: The Highly Luminous Quasar HS 1946+7658, 1999, in Active Galactic Nuclei and Related Phenomena, IAUS 194, p. 175

9.     Petrov, G., Slavcheva, L., Bachev, R., Mihov, B., Surface Photometry of Barred AGN Arakelian 564, 1999, in Active Galactic Nuclei and Related Phenomena, IAUS 194, p. 94

  1. Petrov, G., Strigachev, A., Mihov, B., Petrov, I., Monte Carlo simulations of the distribution of the galaxies in the direction of Hercules void (1600+18), 1999, Com. Rend. Acad. Bul. Sc., 52(1-2), 5

11.  Slavcheva L., Petrov G., Mihov B., Spectral Analysis of Seyfert 1 Galaxies, 1999, Comp. Ren. Acad. Bul. Sc., 51(1-2),

12.  Slavcheva, L., Mihov, B., Petrov, G., Bachev, R., Spectrophotometry of Selected AGN: Seyfert Galaxy AKN 564, 1999, in Active Galactic Nuclei and Related Phenomena, IAUS 194, p.97

  1. Veltchev T., Nedialkov P., Ivanov G., Star Formation History and Extinction in NGC 206, 1999, RMxAA, 35, 13-23

14.  1999A&A...344...36Y,  Yankulova, I. M.  "The circumnuclear gas and dust environment of the ringed Seyfert 2 galaxy MKN 620"

15.  1999A&AT...17..367N  Nedialkov, P. L.; Ivanov, V. D.  On the Absorption of Light from the Brightest Stars in M 31
16.  1999astro.ph.11262N  Nedialkov, P.; Veltchev, T.  Study of the Extinction Law in M31 and Selection of Red Supergiants
17.  1999RMxAA..35...13V  Veltchev, T.; Nedialkov, P.; Ivanov, G. R.  Star Formation History and Extinction in NGC 206

2000 – 13 papers

  1. Bachev, R., Strigachev, A., Dimitrov V., VRI comparison stars for selected active galaxies, 2000, A&AS, 147, 175

2.     Bachev, R., Slavcheva-Mihova, L., 2000, Search for Optical Variability in Two Seyfert Galaxies, Proc. of the Second Serbian-Bulgarian Astronomical Meeting, 23-26, June, 2000, Zajecar, Serbia. (eds) M. S. Dimitrijevic, L. C. Popovic, M. Tsvetkov. Publ. of Astr. Obs., Belgrade, 67, 3

  1. Borissova J., Georgiev L., Rosado M., Kurtev R., Bullejos A., Valdez-Gutierrez M., Infrared photometry of the Local Group dwarf irregular galaxy IC 10, 2000, A&A, 363, 130-140
  2. Borissova, J., Georgiev, L., Kurtev, R., Rosado, M., Ivanov, V. D., Richer, M., Valdez-Gutiérrez, M., The Red Stellar Contents of Three Selected Fields of the Local Group Dwarf Irregular Galaxy IC 1613, 2000, RMxAA, 36, 151

5.     Georgiev, T. B., The brightest resolved objects and the distance to the galaxy: M 82, 2000, Compt. Rend. Acad. Bulg. Sci., 53/2, 5-8

6.     Georgiev, T. B., Photometry of the resolved objects in the dwarf galaxy UGC 685, 2000, Compt. Rend. Acad. Bulg. Sci., 53/9, 5-8

7.     Georgiev, T. B., Atanasova, E. G., Velitchkov, M. T., Stellar photometry in the dwarf galaxy LGS 3, 2000, Compt. Rend. Acad. Bulg. Sci., 53/12, 5-8

  1. Kurtev, R., Sholukhova, O., Borissova, J., Georgiev, L. B Photometry of Romano's Star in M 33, 2000, IBVS, 4922, 1-4
  2. Nedialkov, P., Veltchev, T., Toward the extinction in compact HII regions in M31, 2000, in Proc. of WE-Heraeus Seminar, 22-25 May 2000, Bad Honnef, Germany, p. 107-110
  3. Valdez-Gutiérrez, M., Rosado, M., Georgiev, L., Lacey, C., Borissova, J., Kurtev, R., Kinematics of the Ionized Gas in Irregular Galaxies: IC 1613 and NGC 4449, 2000, ASPC, 195, 346
11.  2000immm.proc...85N  Nedialkov, P.; Berkhuijsen, E. M.; Nieten, C.; Haas, M.  Relationships extinction-dust emission and extinction-gas density in M31
12.  2000immm.proc..107N  Nedialkov, P.; Veltchev, T.  Toward the extinction in compact HII regions in M31
13.  2000POBeo..67...81I  Ivanov, G. R.; Krastev, K. G.  Stellar Associations in NGC 6946

2001 – 11 papers

1.     2001astro.ph..2441O  Orio, M.; Casalegno, R.; Conselice, C.; Greiner, J.; Nedialkov, P. L.; Tikhonov, N. A.  Optical identification of supersoft X-ray sources in M31
  1. Bachev, R., Search for microvariability in Seyfert galaxies, 2001, in: Proc. of Balkan Meeting of Young Astronomers, 25-29 Sept. 2000, Belogradchik, Bulgaria, A. Antov, R. Konstantinova-Antova, R. Bogdanovski and M. Tsvetkov (eds), 84

3.     Georgiev, T. B., Atanasova, E. G., Velitchkov, M. T., Color-magnitude diagram and ditsnce to the galaxy UGC 1281, 2001, Compt. Rend. Acad. Bulg. Sci., 54(1), 5-8

4.     Kurtev, R., Georgiev, L., Borissova, J., Li, W. D., Filippenko, A. V., Treffers, R. R., The first known Mira-type variable star in IC 1613, 2001, A&A, 378, 449

5.     Kurtev, R., Sholukhova, O., Borissova, J., Georgiev, L., Romano's Star in M33: LBV Candidate or LBV?, 2001, RMxAA, 37, 57

6.     Mihov, B. M., Monte Carlo simulations of quasars' brightness magnification due to gravitational lensing: the highly luminous quasar HS 1946+7658, 2001, in: Proc. of Balkan Meeting of Young Astronomers, 25-29 Sept. 2000, Belogradchik, Bulgaria, A. Antov, R. Konstantinova-Antova, R. Bogdanovski and M. Tsvetkov (eds), p. 80

7.     Mihov B., The External Shear in the Gravitationally Lensed System Q 2237+0305: a Two-Plane Lens Modelling, 2001, A&A, 370, 43

8.     Rosado, M., Valdez-Gutiérrez, M., Georgiev, L., Arias, L., Borissova, J., Kurtev, R., The Influence of Massive Stars in the Interstellar Medium of IC 1613: The Supernova Remnant S8 and the Nebula S3 Associated with a WO Star, 2001, AJ, 122, 194

9.     Richer, M. G., Bullejos, A., Borissova, J., McCall, M. L., Lee, H., Kurtev, R., Georgiev, L., Kingsburgh, R. L., Ross, R., Rosado, M., IC 10: More evidence that it is a blue compact dwarf, 2001, A&A, 370, 34

10.  Slavcheva-Mihova L., Oknyanskij V., Mihov B. CCD Photometry of QSO 0957+561 A & B Using La Palma Archive, 2001, A&SS., 275, 385

11.  Valdez-Gutiérrez, M., Rosado, M., Georgiev, L., Borissova, J., Kurtev, R., Kinematics of the ionized gas in the Local Group irregular galaxy IC 1613, 2001, A&A, 366, 35

2002 – 16 papers

  1. Borisov, G., Dimitrov, D., Semkov, E., Apostolovska, G., Bonev, T., Ivanova, A., Bilkina, B., Ivanova, V., Panov, K., UBVRI Photometry of SN 2002ap in M74, 2002, IBVS, 5264, 1-4
  2. Borissova, J., Kurtev, R., Georgiev, L., Rosado, M., Ivanov, G., IC 1613 OB Associations and Star Cluster Candidates, 2002, IAUS, 207, 456

3.     Georgiev Ts. B., Goranova Yu. B., Stanchev O. I., A program for investigation of resolved dwarf galaxies, 2002, Meetings in Physics at the University of Sofia, V 3, 62-65

4.     Georgiev, T., On the reduction of astronomical photoelectric data, 2002, Meetings in Physics at the University of Sofia, V 3, 66-68

5.     Georgiev T.B., Extinction estimation from the color-magnitude diagram of dwarf galaxies, 2002, Publ. Astron. Obs. Belgrade, 73, 143-148

  1. Kurtev, R., Borissova, J., Rosado, M., Georgiev, L., Richer, M. G., Valdez-Gutiérrez, M., Star Cluster Candidates in NGC 4236, 2002, ASP Conf. Ser., 282, 96
  2. Kurtev, R., Borissova, J., Georgiev, L., Rosado, M., UBV and Strömgren stellar photometry in the Eastern part of M31, 2002, ASP Conf. Ser., 274, 412
  3. Rosado, M., Valdez-Gutiérrez, M., Bullejos, A., Arias, L., Georgiev, L., Ambrocio-Cruz, P., Borissova, J., Kurtev, R., The Interplay Between Gas and Stars in Irregular Galaxies, 2002, ASP Conf. Ser., 282, 50

9.     Slavcheva-Mihova L., BVRcIc Syrface Photometry of Seyfert Galaxies Mrk 304 And Mrk 352, 2002, XIV Canary Islands Winter School for Astrophysics, 18-29 Nov., 2002, Tenerife, Spain.

10.  Stanchev, O. I., Georgiev, Ts. B., Goranova, Yu. B., R-band photometric profiles of 120 edge-on northern galaxies, 2002, Publ. Astron. Obs. Belgrade, 73, 231-246 

11.  2002A&A...389..439N  Nedialkov, P.; Orio, M.; Birkle, K.; Conselice, C.; Della Valle, M.; Greiner, J.; Magnier, E.; Tikhonov, N. A.  First optical identification of a supersoft X-ray source in M31
12.  2002AIPC..637..391O  Orio, M.; Dalmazzo, A.; Nedialkov, P.  Novae in M31: How Many of them Turn into Supersoft X-Ray Sources?
13.  2002POBeo..73..181N  Nedialkov, P.; Veltchev, T.  Red supergiants in M31: extinction, metallicities and gas-to-dust ratio
14.  2002POBeo..73..201P  Popov, G.; Nedialkov, P.; Roussev, I.; Veltchev, T.  The S4 spiral arm in M31 galaxy – infrared versus optical
15.  2002POBeo..73..257V  Vassilev, O.; Vassileva, L.; Ivanov, G.; Vassilev, D.  Red supergiants in M33 galaxy
16.  2002yCat..33890439N  Nedialkov, P.; Orio, M.; Birkle, K.; Conselice, C.; della Valle, M.; Greiner, J.; Magnier, E.; Tikhonov, N. A.  Photometry in field of RX J004404.8+411820

2003 – 3 papers

  1. Alcaino, G., Alvarado, F., Borissova, J., Kurtev, R., The Small Magellanic Cloud star cluster NGC 458. A new UBVI photometric study, 2003, A&A, 400, 917
  2. Georgiev T. B., Dwarf stellar systems – properties and problems, 2003, Collected papers, Physics, University of Shumen, 147-150
  3. Stanchev, O. I., Two-dimensional structure of edge-on galaxies, 2003, Collected papers, Physics, University of Shumen, 151-157

2004 – 14 papers

  1. Bachev, R., Strigachev, A., Optical continuum variability of the active galaxy Mrk 279 - implications for different accretion regimes, 2004, Astron. Nachrichten, 325, 317-325
  2. Bachev, R., Marziani, P., Sulentic, J. W., Zamanov, R., Calvani, M., Dultzin-Hacyan, D., Average Ultraviolet Quasar Spectra in the Context of Eigenvector 1: A Baldwin Effect Governed by the Eddington Ratio?, 2004, ApJ, 617, 171-183
  3. Georgiev, T. B., Bomans, D. J., BVR photometry of the resolved dwarf galaxy Ho IX, 2004, A&A, 427, 87-95

4.     Georgiev, T. B., Stanchev, O. I., Nedialkov, P. L., Decomposition of the photometry profiles of 119 edge-on spiral galaxies, 2004, Annuaire d’Universite de Sofia, Faculte de Physique, 97, 111-128

5.     Stanchev O. Nedialkov P. Georgiev T., Calibrated Tully-Fisher relations for edge-on galaxies in the system BVR, 2004, Comp. rend. Acad. Bulg. Sci, 57(6), 5-10

  1. Stanchev, O., Nedialkov, P., Georgiev, T., A Huuble diagram from 37 southern edge-on galaxies in B and I bands, 2004, Comp .rend. Acad .Bulg. Sci., 57(7), 5
7.     Stirpe, G. M., Sulentic, J. W., Marziani, P., Zamanov, R., Calvani, M., Braito, V., Hβ spectra of high-redshift QSOs: Eigenvector 1 at high luminosities, 2004, IAUS 222, 539-540
  1. Tzenev L., Georgiev I., Ovcharov E., Stanev I., Georgiev T., Nedialkov P., Optical nova in M 31, 2004, ATel., 330
9.     Tzenev, L., Ovcharov, E., Stanev, I., Georgiev, Ts., Georgiev, I., Nedialkov, P., Nova in M31, 2004, ATel., 346
10.  Veltchev, T., Nedialkov, P., Borisov, G., Initial mass function in the South-Western part of M 31, 2004, A&A, 426, 495
11.  2004A&A...426..495V  Veltchev, T.; Nedialkov, P.; Borisov, G.  Initial mass function in the South-Western part of M 31
12.  2005ARBl...20...85O  Ovcharov, E.; Nedialkov, P.  Distance modulus of the dwarf galaxy IC 10
13.  2005ARBl...20..113N  Nedialkov, P.; Valcheva, A.; Veltchev, T.; Stanev, I.; Dyulgerov, C.; Kostov, A.  Extinction studies in M31
14.  2005gbha.conf..134O  Ovcharov, E.; Ivanov, V. D.; Nedialkov, P.  Black hole masses of the SDSS QSO sample

2005 – 20 papers

1.     2005PASRB...4..167G  Georgiev, I.; Veltchev, T.; Nedialkov, P.; Ovcharov, R.; Stanev, I.; Dyulgerov, C.; Stanchev, O.  BVR photometry of the outer regions of the starburst galaxy M82
  1. Bachev, R., Strigachev, A., Semkov, E., Short-term optical variability of high-redshift QSO's, 2005, MNRAS, 358, 774-780

3.     Georgiev, T. B., Representation of the convex radial profiles of the galactic disks by meansof the Sersic formula. The galaxies M 31, M 33, LMC, SMC and M 83, 2005, Aerospace Research in Bulgaria, 20, 29-45

  1. Georgiev, T., Georgiev, I., Koleva, N, Nedialkov, P, Stanchev, O., Decomposition of the brightness profiles of 20 galaxies, 2005, Aerospace Research in Bulgaria, 20, 145-152
  2. Georgiev, T. B., The radial brightness profiles of the galactic disks, 2005, Aerospace Research in Bulgaria, 20, 131-137

6.     Georgiev, T., Georgiev, I., Koleva, N., Nedialkov, P., Stanchev, O, Analysis of the color-magnitude diagrams of the dwarf galaxies UGCA 105 and UGCA 86, 2005, Aerospace Research in Bulgaria, 20,119-127

  1. Georgiev, Ts. B.; Stanchev, O. I., Decomposition of profiles of galaxies with convex disk shapes 2005, Publ. Astron. Society R. Boskovic, 5, 175-182

8.     Ilic, D., Stavrev, K. Y., Tsvetkova, K., Tsvetkov, M., Popovic, L. C., Observations of Mrk 817 in Narrow Spectral Bands: Preliminary Results, 2005, Publ. Astron. Society R. Boskovic, 5, 183-186

  1. Kopchev, V., Nedjalkov, P., Petrov, G., Age determination of open star clusters King 14 and NGC 146, 2005, Comp. Ren. Acad. Bul. Sci., 58, p.1363
  2. Ovcharov E., Koleva N., Kostov A., Valcheva A., Stanev I., Georgiev T., Nedialkov P., Brightened Mira-Like Variable in M31, 2005, ATel., 606
  3. Ovcharov E., Kostov A., Stanev I., Georgiev T., Nedialkov P., Nova in M31, 2005, ATel., 651
  4. Petrov, G., Slavcheva-Mihova, L., Mihov, B., Surface Photometry of NGC5610 - a Box/Peanut Structure in an Intermediately Inclined Galaxy, 2005, Publ. Astron. Soc. Rudjer Boskovic, 5, 241–246
  5. Petrov, G., Kniazev, A., Fried, J., Studies of Selected Voids. Surface Photometry of Faint Galaxies in the Direction of 1600+18 in Hercules Void, 2005, Aerospace Research in Bulgaria, 20, 120-125
  6. Popovic, L. C., Stavrev, K. Y., Tsvetkova, K., Tsvetkov, M., Ilic, D., Sanchez, S. F., Richter G., M. Boåhm, P., Observations of AGNs with the 2 m Telescope of Rozhen Observatory: Aims and Preliminary Results, 2005, Publ. Astron. Society R. Boskovic,, 5, 251-257
  7. Popovic, L. C., Stavrev, K. Y., Tsvetkova, K., Tsvetkov, M., Ilic, D., Sanchez, S. F., Richter, G., Mrk 1040 and its companion LEDA 212995, 2005, Aerospace Research in Bulgaria, 20, 114.
  8. Semkov, E., Bachev, R., Strigachev, A., Spectral Observations of Bright Quasars at NAO Rozhen, 2005, Aerospace Research in Bulgaria, 20, 99-101
  9. Slavcheva-Mihova, L., Petrov, G., Mihov B., Multicolour Surface Photometry of Seyfert Galaxies: First Results, 2005, Aerospace Reserch in Bulgaria, 20, 60-65
  10. Stanchev, O. I., Nedialkov, P., Georgiev, Ts., Georgiev, I., Calibration of the relation “Diameter-HI line-width” for edge-on spiral galaxies, 2005, Publ. of the Astr. Soc. R. Boskovic, 5, p. 281-288
  11. Tzenev L., Georgiev I., Ovcharov E., Stanev I., Kostov A., Georgiev T., Nedialkov P., Nova near the center in M 31, 2005 ATel., 334
  12. Tzenev L., Ovcharov E., Stanev I., Georgiev T., Georgiev I., Nedialkov P., Nova in M 31, 2005, ATel., 346

2006 – 18 papers

  1. Deshev B., Stanchev O., Georgiev T., Revealing of convex disk profiles in LSB galaxies, 2006, Bulg. Astr. J., 8, 143-147

2.     Deshev, B., Georgiev, T., Nedialkov, P., Stanchev, O., Bomans, D., A correlation between the mass of the galactic disks and the convexity of their brightness profiles, 2006, Meetings in Physics at the University of Sofia, V 6; 75-77

  1. Georgiev, T., Stanchev, O., Deshev, B., Yankulov, I., Nedialkov, P., Studies of convex radial profiles of galactic disks, 2006, Bulg. Astr. J., 8, 39-47

4.     Mihov, B., Slavcheva-Mihova, L., Petrov, G. Spectral observations of Seyfert galaxies with the spectrograph UAGS at the NAO Rozhen, 2006, Bul. Astr. J., 8, 49-55

5.     Mihov, B., Slavcheva-Mihova, L., Multicolour Optical Surface Brightness Profiles decomposition of the Seyfert Galaxies Mrk 79 and Mrk 279, 2006, Bul. Astr. J., 8, 139-142

  1. Mineva, V., Petrov, G., Masses and rotational moments of 84 Markarian and 13 normal galaxies, 2006, Astr. Invest. (Bulg. AS), 7, 16-28
  2. Ovcharov E., Nikolov Y., Georgiev T., Valcheva A., Stanev I., Kostov A., Nedialkov P., M 31 Nova Candidate, 2006, ATel., 844
  3. Ovcharov, E., Stanev I., Georgiev T., Nedialkov, P., M 31 Nova Candidate, 2006, ATel., 973
  4. Petrov, G., Slavcheva, L., Surface photometry of barred AGN. Wolf-Rayet galaxy NGC 6764, 2006, Astr. Invest. (Bulg.AS), 7, 76-83
  5. Petrov, G., Galaxies in voids with the 2_m RCC telescope of NAO Rozhen. 2006, Astr. Invest. (Bulg. AS), 7, 32-33
  6. Petrov, G., Mineva, V., Relative moment – mass” and “Absolute stellar magnitudes – maximal rotational velocity” relations for some types of Active galaxies. 2006. Astr. Invest. (Bulg. AS), 7, 3-15

12.  Petrov, G., Fried, J., Kniazev, A., Studies of selected voids. Cluster Analysis of faint galaxies in the direction of Hercules void (1600+18), 2006, in Virtual Observatory: Plate Content Digitization, Archive Mining and Image Sequence Processing, iAstro workshop, Sofia, Bulgaria, 2005, 285

13.  Petrov G., Fried, J.W. Kniazev: A., Large Scale Structures in the Universe. Cluster analysis of faint galaxies in the direction of HERCULES void, 2006, in Virtual Observatory: Plate Content Digitization, Archive Mining and Image Sequence Processing, iAstro workshop, Sofia, Bulgaria, 2005, 285-300

  1. Semkov, E., GRB 060218/SN 2006aj: optical observations at Rozhen Observatory, 2006, GCN Circ. No. 4932
  2. Semkov, E., GRB 060218 (SN 2006aj): IR afterglow detection six months after the burst, 2006, GCN Circ. No. 5358

16.  Slavcheva-Mihova, L., Mihov, B., Petrov, G.., Adaptive Filter Applications in Surface Photometry of Galaxies, 2006, in Virtual Observatory: Plate Content Digitization, Archive Mining and Image Sequence Processing, iAstro workshop, Sofia, Bulgaria, 2005, 311-316

  1. Stanchev O., Deshev B., Nedialkov P., Georgiev T., Scaling relations and fundamental plane of the spiral galaxies in the J-band, 2006, Bulg. Astr. J., 8, 149-156
  2. Sulentic, J. W., Dultzin-Hacyan, D., Marziani, P., Bongardo, C., Braito, V., Calvani, M., Zamanov, R., Low Redshift BAL QSOs in the Eigenvector 1 Context, 2006, RMxAA, 42, 23-32

2007 – 21 papers

  1. Bachev, R. S., Tracing quasar accretion rates at higher red shifts, 2007, Bulg. J. Phys., 34(2), 275-277
  2. Böttcher, M., Basu, S., Joshi, M., … , Bachev, R., … , Strigachev, A., et al., The WEBT Campaign on the Blazar 3C 279 in 2006, 2007, ApJ, 670, 968-977

3.     Draganova, N., Georgiev, T., Velchev, T., Photometric decomposition of 3 early type dwarf galaxies in Virgo, 2007, Bulg. J. Phys., 34(2), 303-309

4.     Hatzidimitriou, D., Burwitz, V., Pietsch, W., Strigachev, A., Reig, P., Papamastorakis, I., Optical Nova Candidate in M31, 2007, ATel., 1206
  1. Ilic D., Tsvetkov M. K., Tsvetkova M. K., Stavrev K.Y., Popovic L.C., A Study of the Spectral Characteristics of AGN: Mrk 817 and Mrk 1040, 2007, Bulg. J. Phys., 34(2), 192-195
  2. Koleva, N. Veltchev, T. Vassileva, L. Borisov, G. Nedialkov, P., Study of Stellar Populations in M33 OB Associations, 2007, Bulg. J. Phys., 34(2), 342-347
7.     Kovacevic, J., Bachev, R., Popovic, L., Zamanov, R., Marziani, P., Asymmetry of the C IV1549 Å and [O III]4959, 5007 Å Lines in a Sample of RQ and RL AGN, 2007, AIP Conf. Proc., 938, 104-108
  1. Ovcharov E., Valcheva A., Kostov A., Nikolov Y., Stanev I., Georgiev T., Nedialkov P., M 31 nova candidate, 2007, ATel., 1112
  2. Ovcharov E., Valcheva A., Kostov A., Nikolov Y., Stanev I., Georgiev T., Nedialkov P., M31 Nova Candidate, 2007, ATel.,. 1139,

10.  Ovcharov E., Valcheva A., Ivanov V., Kacharov N., Kostov A., Nikolov Y., Georgiev T., Nedialkov P., Probable Nova in M 31 on Nov 6, 2007, 2007, ATel., 1267

  1. Ovcharov E., Valcheva A., Kostov A., Nikolov Y., Georgiev T., Nedialkov P., Two possible Novae in M31 on Nov 29, 2007, 2007, ATel., 1312

12.  Petrov, G. Fried, A, Kniazev: A. Large Scale Structure in the Universe. III. Cluster Analysis of faint galaxies in the direction of HERCULES void, 2007, Bilg. J. Phys. 34(2), 70-81

13.  Petrov, G. Slavcheva-Mihova, L. Kopchev V., Studies of selected voids. Faint galaxies in the direction of the void 0049 +05, 2007, Bulg. J. Phys., 34(2), 385-390.

  1. Petrov, G., Fried, J., Kniazev, A., Large Scale Structures in the Universe. III.Cluster Analysis of faint galaxies in the direction of HERCULES void, 2007, Bulg. J. Phys., 34(2), 70-80
  2. Raiteri, C. M., Villata, M., Larionov, V. M., … ,Semkov, E., … , Strigachev, A., et al., WEBT and XMM-Newton observations of 3C 454.3 during the post-outburst phase. Detection of the little and big blue bumps, 2007, A&A, 473, 819-827

16.  Slavcheva-Mihova, L. Mihov, B. Petrov, G. Kopchev V., Sutface Brightess Profile Decomposition of the Seyfert Galaxies III Zw 2, Mrk 506 and Mrk 509, 2007, Bulg. J. Phys., 34(2), 201-209

  1. Strigachev, A., Bachev, R., Semkov, E., WEBT-Coordinated Optical Monitoring of Intra-night Variable Blazars – S5 0716+71 and OJ 287, 2007, Bulg. Astr. J., 9, 3-4
  2. Sulentic, J. W., Bachev, R., Marziani, P., Negrete, C.A. Dultzin, D., C IV λ1549 as an Eigenvector 1 Parameter for Active Galactic Nuclei, 2007, ApJ, 666, 757-777
  3. Vassileva, L., Veltchev, T., Ivanov, G. R., Georgiev, Ts., Nedialkov, P., Clustering of Young Stellar Groups in M33 Galaxy, 2007, Bulg. J. Phys., 34(2), 415-419
20.  2007A&A...466..501V  Valcheva, A. T.; Ivanov, V. D.; Ovcharov, E. P.; Nedialkov, P. L.  Carbon stars and C/M ratio in the WLM dwarf irregular galaxy
21.  2007yCat..34660501V  Valcheva, A. T.; Ivanov, V. D.; Ovcharov, E. P.; Nedialkov, P. L.  JKs photometry of WLM galaxy carbon stars

2008 – 11 papers

  1. Bachev, R. Strigachev, A. Semkov, E. Mihov, B., Spectroscopy of bright quasars: emission lines and internal extinction, 2008, A&A, 488, 887-895
  2. Mihov, B, Slavcheva-Mihova, L., Bachev, R., Strigachev, A., Semkov, E., Petrov, G., Photometric Monitoring of the Blazar 3C 345 For the Period 1996 – 2006, 2008, Astron. Nachrichten, 329, 77-83
  3. Mihov, B, Slavcheva-Mihova, L., Johnson-Cousins magnitudes of comparison stars in the fields of ten Seyfert galaxies, 2008, Astron. Nachrichten, 329, 418-425
  4. Negrete, C. A., Sulentic, J. W., Bachev, R., Marziani, P., Dultzin, D., Spectroscopic Study of C IV lambda 1549 and its Relation with Optical Parameters in Active Galactic Nuclei, 2008, RMxAA Serie de Conf., 32, 106-106
  5. Ovcharov E., Valcheva A., Latev G., Petrov B., Kostov A., Nikolov Y., Georgiev T., Nedialkov P., Optical Nova Candidate in M31, 2008, ATel., 1563
  6. Ovcharov, E., Nedialkov, P., Valcheva, A., Ivanov, V., Tikhonov, N., Stanev, I., Kostov, A., Georgiev, T., Optical monitoring of the z=4.4 quasar Q 2203+292, 2008, MNRAS, 386, 819-825
  7. Petrov G., Kopchev V., Slavcheva-Mihova L., Mihov B., Extragalactic investigations in Bulgaria. Project Individual Galaxies, 2008, Journal of BAS, 3, p.60-67
  8. Raiteri, C. M., Villata, M., Larionov, V. M., ..., Bachev, R., ... , Semkov, E., ... , Strigachev, A., et al., Radio-to-UV monitoring of AO 0235+164 by the WEBT and Swift during the 2006-2007 outburst, 2008, A&A, 480, 339-347
  9. Raiteri, C. M., Villata, M., Chen, W. P., … , Strigachev, A., et al., The high activity of 3C 454.3 in autumn 2007. Monitoring by the WEBT during the AGILE detection, 2008, A&A, 485, L17-L20
  10. Raiteri, C. M., Villata, M., Larionov, V. M., ... , Bachev, R., …, Semkov, E., … , Strigachev, A., et al., A new activity phase of the blazar 3C 454.3 - Multifrequency observations by the WEBT and XMM-Newton in 2007–2008, 2008, A&A, 491, 755-766
11.  Valcheva, A., Ovcharov, E., Latev, G., Kostov, A., Nikolov, Y., Georgiev, Ts., Nedialkov, P., Optical Nova Candidate in M31, 2008, ATel., 1687

2009 – 23 papers

1.     Arbutina, B., Ilić, D., Stavrev, K., Urošević, D., Vukotić, B, Onić, D., Optical observations of M81 galaxy group in narrow band [SII] and Hα filters: Holmberg IX, 2009, Serb. Astr. J., 179, 87-94

  1. Bachev, R., Grupe, D., Boeva, S., Ovcharov, E., Valcheva, A., Semkov, E., Georgiev, Ts., Studying X-ray reprocessing and continuum variability in quasars: PG 1211+143, MNRAS, 2009, 399, 750-761
  2. Bachev R. S., Quasar optical variability: searching for interband time delays, 2009, A&A, 493, 907-911
  3. Böttcher, M., Fultz, K., Aller, H. D.,…, Bachev, R.,..., Mihov, B.,…, Semkov, E.,…, Strigachev, A. et al., The Whole Earth Blazar Telescope Campaign on the Intermediate BL Lac Object 3C 66A in 2007-2008, 2009, ApJ, 694, 174-182
  4. Henze, M., Kaduk, F., Burwitz, V., Pietsch, W., Papamastorakis, G., Reig, P., Strigachev, A., Confirmation of two recent optical nova candidates in M 31, 2009, ATel, 2165, 1
  5. Henze, M., Pietsch, W., Podigachoski, P., Burwitz, V., Haberl, F., Updike, A., Hartmann, D., Milne, P., Williams, G., Papamastorakis, G., Reig P., Strigachev, A., M31N 1997-11k - a very fast recurrent nova in M31 or a foreground CV?, 2009, ATel, 2286, 1
  6. Mihov, B., Slavcheva-Mihova, L., Petrov, G., Dennefeld, M., Relation between nuclear activity, star formation, and bulge mass in active galaxies. I. Emission line properties of Seyfert galaxies in RBSC-NVSS sample, 2009, Publ. Astr. Soc. Rudjer Boskovic, 9, 335-342

8.     Ovcharov E., Valcheva A., Kostov A., Latev G., Nikolov Y., Georgiev Ts., Nedialkov P., Optical Nova Candidate in M31, 2009, ATel, 1927, 1

9.     Ovcharov E., Valcheva A., Georgiev Ts., Kostov A., Nikolov Y., Nedialkov P., Optical Nova Candidate in M31, ATel, 2009, 2176, 1

10.  Pannella, M., Gabasch, A., Goranova, Yu., Drory, N., Hopp, U., Noll, S., Saglia, R., Strazzullo, V., Bender, R., The Evolution of Early- and Late-type Galaxies in the Cosmic Evolution Survey up to z ≈ 1.2, 2009, ApJ, 701, 787-803

  1. Petrov, G., Bulgarian Virtual Observatory. Multicolor Observations of Box/Peanut Galaxies, 2009, Publ. Astr. Soc. Rudjer Boskovic, 9, 387-396
  2. Petrov, G., Dechev, M., Slavcheva-Mihova, L., Duchlev, P., Mihov, B., Kopchev, V., Bachev, R., Astronomical virtual observatory and the place and role of Bulgarian one, 2009, Publ. Astr. Soc. Rudjer Boskovic, 9, 91-111
  3. Pietsch, W., Kaduk, F., Henze, M., Burwitz, V., Papamastorakis, G., Reig, P., Strigachev, A., New optical nova candidate in M 31, 2009, ATel., 2147, 1

14.  Podigachoski, P., Henze, M., Pietsch, W., Burwitz, V., Papamastorakis, G., Reig, P., Strigachev, A., Novae in M31: 2009-10b and 2009-10c, 2009, CBET, 1971, 1

15.  Podigachoski, P., Henze, M., Pietsch, W., Burwitz, V., Papamastorakis, G., Reig, P., Strigachev, A., New optical nova candidate in M 31, 2009, ATel., 2234, 1

16.  Raiteri, C. M., Villata, M., Capetti, A.,…, Strigachev, A.,..., Bachev, R.,…, Kostov, A.,…, Mihov, B.,..., Semkov, E. et al., WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007–2008 Unveiling different emission components, 2009, A&A, 507, 769-779

17.  Stanchev, O. I., Georgiev, Ts. B., Weis, K., Bomans, D. J., Dettmar, R.-J., Correlation between the Convexity of the Disk Radial Profile and the Hubble Type of the Galaxy, 2009, AIP Conf. Proc., 1121, 61-70

18.  Sulentic, J., Marziani, P., Stirpe, G., Zamfir, S., Dultzin D., Calvani, M., Repetto, P., Zamanov, R., Constraining Quasar Structural Evolution with VLT/ISAAC, 2009, The ESO Messenger, 137, 30

19.  Valcheva, A., Ovcharov, E., Nikolov, Y., Latev, G., Kostov, A., Georgiev, Ts., Nedialkov P., Optical Nova Candidate in M31, 2009, ATel, 2090, 1

  1. Vassileva, L., Veltchev, T., Georgiev, Ts., Nedialkov, P., Young Stellar Groups in M 33 Galaxy: Delineation and Main Parameters, 2009, Publ. Astr. Soc. Rudjer Boskovic, 9, 433-440

21.  Villata, M., Raiteri, C. M., Gurwell, M. A.,…, Bachev, R. et al., The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst, 2009, A&A, 504, L9-L12

22.  2009BlgAJ..11...71V  Valcheva, A.; Ovcharov, E.; Ivanov, V.; Nedialkov, P.; Stanev, I.  Long-term R-band monitoring of the z˜0.8 QSO SDSS J075448.86+303355.1. First results.
23.  2009IAUS..254P..45N  Nedialkov, P. L.; Valcheva, A. T.; Ivanov, V. D.; Vanzi, L.  Dust properties of nearby disks: M31 case

2010 – 11 papers

1.     2010BlgAJ..14...54T  Taneva, N.; Valcheva, A.; Ovcharov, E.; Nedialkov, P.  Mira variables masquerading as Novae in M 31
2.     2010POBeo..90..167O  Ovcharov, E. P.; Valcheva, A.; Nedialkov, P.; Trifonov, T.  Four August 2009 Novae in M31 - Light Curves, Colours and MMRD
3.     2010POBeo..90..187V  Valcheva, A.; Ovcharov, E. P.; Nedialkov, P.  Novae Search in M31 with NAO Rozhen Telescopes
  1. Concejo, J., Bulge-to-disk decomposition of 5 ALHAMBRA galaxies in 23 photometric bands, 2010, Bulg. Astr. J., 13, 21-39
  2. Marziani, P., Sulentic, J. W., Negrete, C. A., Dultzin, D., Zamfir, S., Bachev, R., Broad-line region physical conditions along the quasar eigenvector 1 sequence, 2010, MNRAS, 409, 1033-1048
  3. Ovcharov, E., Valcheva, A., Nedialkov, P., Trifonov, T., Kacharov, N., Bachev, R., Georgiev, Ts., Four novae in M31 in August 2009 - brightness, colour dependencies and MMRD, 2010, Publ. Astron. Obs. Belgrade, 90, 167-170
  4. Rani, B., Gupta, A. C., Strigachev, A., Bachev, R., Wiita, P. J., Semkov, E., Ovcharov, E., Mihov, B., Boeva, S., Peneva, S., Spassov, B., Tsvetkova, S., Stoyanov, K., Valcheva, A., Short Term Flux and Colour Variations in Low-Energy Peaked Blazars, 2010, MNRAS, 404, 1992-2017
  5. Semkov, E., Peneva, S., Bachev, R., Strigachev, A., Optical follow-up observations of blazar 3C 454.3, ATel 3005, 1, (2010)
  6. Semkov, E., Bachev, R., Strigachev, A., Gupta, A. C., Rani, B., Gaur, H., Ovcharov, E., Mihov, B., Valcheva, A., Peneva, S., Boeva, S., Kacharov, N., Short term optical variability of blazars: first results from joint international collaborations, 2010, Bul. Astr. J., 14, 37-41
  7. Stanev, I., Ovcharov, E., Valcheva, A., Georgiev, Ts., Nedialkov, P., Photometry of bright objects in the M31 bulge, 2010, Bul. Astr. J., 14, 49-54
  8. Vercellone, S., D'Ammando, F., Vittorini, V.,..., Bachev R., et al., Multiwave-length Observations of 3C 454.3. III. Eighteen Months of Agile Monitoring of the "Crazy Diamond", 2010, ApJ, 712, 405-420.

 

 

Sofia, 01.11.2011 Udated by G. Petrov