CCD photometric study of the contact binary FG Hydrae

doi:10.1051/aas:2000219

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	CCD photometric study of the contact binary FG Hydrae
	Yang YL(杨毓兰)1,2,3 ; Liu QY(刘清耀)1,2,3 ; Yang, Y
发表期刊	ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
	2000-06
卷号	144 期号:3 页码:457-461
DOI	10.1051/aas:2000219
产权排序	第1完成单位
收录类别	SCI
关键词	Star Binary Light Curve Change Period Change Photometric Solutions
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.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0365-0138
URL	查看原文
归档日期	2000-12-31
WOS记录号	WOS:000088456100008
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	URSAE-MAJORIS ; A-TYPE ; STARS
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/3999
专题	其他
通讯作者	Yang, Y
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
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Yang YL,Liu QY,Yang, Y. CCD photometric study of the contact binary FG Hydrae[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,2000,144(3):457-461.
APA	Yang YL,Liu QY,&Yang, Y.(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.

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