Long-term photometry of the near-contact detached binary GR Tauri
文献类型：期刊论文
| 作者 | Zhang, XB ; Zhang, RX; Fang, MJ
|
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2002-11-01 |
| 卷号 | 395期号:2页码:587-593 |
| 关键词 | stars : binaries : eclipsing stars : individual : GR Tau |
| 英文摘要 | We present photometric observations of the eclipsing binary GR Tau made in 1985, 1993, 1998, 2000 and 2001. New times of minima and ephemerides are given. Based on a statistical analysis of the times of minima obtained by photoelectric and CCD photometry, the orbital period of the system is found to be decreasing with a rate of DeltaP/P = 3.27 x 10(-10) during the past decades. An assumed hot spot on the trailing hemisphere of the secondary enables us to reconstruct the peculiar asymmetry of the distorted light curves. The photometric solution with the Wilson-Devinney code reveals that GR Tau is a near-contact detached system with the two components almost filling their respective critical Roche lobes. The photometric mass ratio turns out to be q = 0.22, and the masses and radii are derived for the components as M(1) = 1.42 +/- 0.18 M(circle dot), M(2) = 0.31 +/- 0.04 M(circle dot), R(1) = 1.47 +/- 0.19 R(circle dot) and R(2) = 0.70 +/- 0.09 R(circle dot). The authors discuss the possible evolutionary status of the component stars and the probable nature of the assumed hot spot. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000179291000028 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8512]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, XB,Zhang, RX,Fang, MJ. Long-term photometry of the near-contact detached binary GR Tauri[J]. ASTRONOMY & ASTROPHYSICS,2002,395(2):587-593. |
| APA | Zhang, XB,Zhang, RX,&Fang, MJ.(2002).Long-term photometry of the near-contact detached binary GR Tauri.ASTRONOMY & ASTROPHYSICS,395(2),587-593. |
| MLA | Zhang, XB,et al."Long-term photometry of the near-contact detached binary GR Tauri".ASTRONOMY & ASTROPHYSICS 395.2(2002):587-593. |
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来源：国家天文台
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