NSVS 1908107, an EB-type eclipsing binary in the open cluster NGC 869  

作　　者：Yang Pan Zhi-Quan Luo Xiao-Bin Zhang Li-Cai Deng Kun Wang Yang-Ping Luo Wei-Jing Fang Yin-Jiang Peng Jin-Jiang Sun Qi-Li Liu Qiang Zhou 

机构地区：[1]Physics and Space Science College, China West Normal University [2]Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences [3]Purple Mountain Observatory, Chinese Academy of Sciences

出　　处：《Research in Astronomy and Astrophysics》2016年第7期77-82,共6页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.U1331121,U1231202,11373037 and 11303021)

摘　　要：We present a time-series BV CCD photometry for an EB-type eclipsing binary NSVS 1908107, a member of the young open cluster NGC 869. The photometric solution was obtained by using the 2003 version of the Wilson-Devinney code. It reveals that the system is a semi-detached binary with the secondary component filling its Roche lobe. The mass ratio was determined to be 0.059±0.001. With the physical parameters of the cluster, the masses, radii and luminosities of the two components of NSVS 1908107 are estimated to be M1 = 10.34±2.29 M⊙, R1 = 4.65re±0.34 Rspectivel⊙, L1 = 8076 y. The results s±371 L = 2.40 how tha⊙and M2 = 0.61 t the secondary co±0.13M⊙, R2±0.17 R⊙, L2 = 1054±48 L⊙mponent could be a giant or subgiant star with the outer envelope being stripped.We present a time-series BV CCD photometry for an EB-type eclipsing binary NSVS 1908107, a member of the young open cluster NGC 869. The photometric solution was obtained by using the 2003 version of the Wilson-Devinney code. It reveals that the system is a semi-detached binary with the secondary component filling its Roche lobe. The mass ratio was determined to be 0.059±0.001. With the physical parameters of the cluster, the masses, radii and luminosities of the two components of NSVS 1908107 are estimated to be M1 = 10.34±2.29 M⊙, R1 = 4.65re±0.34 Rspectivel⊙, L1 = 8076 y. The results s±371 L = 2.40 how tha⊙and M2 = 0.61 t the secondary co±0.13M⊙, R2±0.17 R⊙, L2 = 1054±48 L⊙mponent could be a giant or subgiant star with the outer envelope being stripped.

关 键 词：BINARIES eclipsing binaries semi-detached stars giant stars individual（NSVS 1908107） 

分 类 号：P153[天文地球—天文学] P154.11