CCD photometric study of the contact binary FG Hydrae
文献类型：期刊论文
| 作者 | Yang YL(杨毓兰)1,2,3 ; Liu QY(刘清耀)1,2,3
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| 刊名 | ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
 |
| 出版日期 | 2000-06 |
| 卷号 | 144期号:3页码:457-461 |
| 关键词 | star binary light curve change period change photometric solutions |
| ISSN号 | 0365-0138 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Yang, Y |
| 英文摘要 | A new light curve of the contact binary FG Hya is presented in this paper. The new light curve and those obtained by other authors from 1955 to 1985 show the change in the shape of the light curves of the system. The difference in the depths between the primary and secondary eclipses increased yearly from 1955 to 1985, but the present light curve seems to exhibit the same shape as the light curve of Smith in 1955. The long-term decrease of the orbital period of the system may be clear if Mahdy et al.'s (1985) timings in question were counted out. The present light curve and those obtained by Binnendijk in 1962 and Yang et al. in 1982 are all analyzed by means of the latest version of the WD program. The results show that FG Hya is an over-contact binary with a small mass ratio. Although the light curves of the system changed considerably, the solutions of the light curves obtained in 1955, 1982 and 1999 are ill agreement. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | URSAE-MAJORIS ; A-TYPE ; STARS |
| 收录类别 | SCI |
| 原文出处 | http://aas.aanda.org/articles/aas/abs/2000/12/ds9343/ds9343.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000088456100008 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/3999]  |
| 专题 | 云南天文台_其他 |
| 作者单位 | 1.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan Province, China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences, China 3.National Astronomical Observatories, Chinese Academy of Sciences, China |
| 推荐引用方式 GB/T 7714 | Yang YL,Liu QY. CCD photometric study of the contact binary FG Hydrae[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,2000,144(3):457-461. |
| APA | Yang YL,&Liu QY.(2000).CCD photometric study of the contact binary FG Hydrae.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,144(3),457-461. |
| MLA | Yang YL,et al."CCD photometric study of the contact binary FG Hydrae".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 144.3(2000):457-461. |
入库方式： OAI收割
来源：云南天文台
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