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.
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.
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
