Abstract Title: *
Long-term photometric BVRI light curves of 15 PMS stars in the Pelican Nebula (IC 5070)

Authors: *
Sunay Ibryamov, Evgeni Semkov, Teodor Milanov, Stoyanka Peneva

Institution: *
University of Shumen, Department of Physics and Astronomy

Preferred format: *
poster presentation

Abstract Text: *
This poster reports the results from the multicolor photometric observations of 15 pre-main
sequence stars collected during the time period from August 2010 to December 2017. The stars
from our study are located in the star-forming HII region IC 5070. These objects were previously
detected as either emission line stars, flare stars, T Tauri variables or Herbig Ae/Be stars.
Photometric observations, especially concerning the long-term behavior of the stars are missing
in the literature. We present the first photometric monitoring for all stars from our study. The
analysis of the obtained BVRI photometric data indicates that the stars display the features of
different types of pre-main sequence stars. In the case of one of the stars we identify previously
unknown periodicity in its photometric behavior. The presented poster is a part of our program
for photometric study of young stellar objects in the NGC 7000/IC 5070 star-forming complex.