Long-term photometric behavior of the PMS stars V977 Cep and V982 Cep in the vicinity of NGC 7129

作     者：Sunay I. Ibryamov Evgeni H. Semkov Teodor R. Milanov Stoyanka P. Peneva 

作者机构：Department of Theoretical and Applied Physics University of Shumen BG-9712 Shumen Bulgaria Institute of Astronomy and National Astronomical Observatory Bulgarian Academy of Sciences BG-1784 Sofia Bulgaria 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2017年第17卷第2期

页      面：77-88页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported partly by funds of the project‘Multicolor photometric study of Pre-main sequence stars from selected star-forming regions’financed by Fund for Scientific Research of the Bulgarian Ministry of Education and Science use of NASA’s Astrophysics Data System Abstract Service the SIMBAD database and the Vizie R catalogue access tool,operated at CDS,Strasbourg,France funded by the National Aeronautics and Space Administration and the National Science Foundation(Skrutskie et al.2006) supported partly by funds from the project RD-08-81 at the University of Shumen 

主　　题：stars: pre-main sequence -- variables: T Tauri -- stars: individual (V977 Cep V982 Cep) 

摘      要：Long-term BVRI photometric light curves of the pre-main sequence stars V977 Cep and V982 Cep during the period from 2000 October to 2016 August are presented. The stars are located in the vicinity of the reflection nebula NGC 7129. Our photometric data show that both stars exhibit strong photometric variability in all optical passbands, which is typical for Classical T Tauri stars. Using our observational data we analyze the reasons for the observed brightness variations. In the case of V977 Cep we identify previously unknown periodicity in its light curve.