The Period Corrections of Two W UMa-type Binaries: V520 Cas and V680 Per

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	The Period Corrections of Two W UMa-type Binaries: V520 Cas and V680 Per
	Wang JJ(王晶晶)1,2,3 ; Qian SB(钱声帮)1,2,3
会议录名称	Astronomical Society of the Pacific (ASP) Conference Series - NINTH PACIFIC RIM CONFERENCE ON STELLAR ASTROPHYSICS
	2012
卷号	451
页码	159-162
会议录编者/会议主办者	Qian, SB; Leung, KC; Zhu, L; Kwok, S
产权排序	第1完成单位
收录类别	CPCI
会议名称	9th Pacific Rim Conference on Stellar Astrophysics
会议日期	2011-04-14
会议地点	Lijiang, PEOPLES R CHINA
摘要	All available CCD light minimum times of two W UMa-type eclipsing binaries V520 Cas and V680 Per were collected from the literature. With the analysis of the O-C diagram, it is found that the values of their periods are inaccurate. We revised the orbital periods and obtained the new ephemeris. After that, the O-C values were recalculated, and it was discovered that the orbital period of V520 Cas shows a continuous decrease at a rate of dP/dt = -6.35 x 10(-7) days yr(-1). The period of V680 Per was improved and shows no obvious variation. This work is much more meaningful to investigate on their period changes.
资助项目	Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[10973037] ; Chinese Natural Science Foundation[10903026] ; Chinese Natural Science Foundation[11103077]
项目资助者	Chinese Natural Science Foundation
语种	英语
学科领域	天文学 ; 天体物理学 ; 恒星与银河系
文章类型	Proceedings Paper
出版者	ASTRONOMICAL SOC PACIFIC
出版地	390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
ISBN号	978-1-58381-785-8
URL	查看原文
归档日期	2012-12-19
WOS记录号	WOS:000304126300028
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
引用统计
文献类型	会议论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5959
专题	双星与变星研究组中国科学院天体结构与演化重点实验室
通讯作者	Wang JJ(王晶晶)
作者单位	1.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Science, P. O. Box 110, 650011 Kunming, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China 3.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
第一作者单位	中国科学院云南天文台
通讯作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Wang JJ,Qian SB. The Period Corrections of Two W UMa-type Binaries: V520 Cas and V680 Per[C]//Qian, SB; Leung, KC; Zhu, L; Kwok, S. 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA:ASTRONOMICAL SOC PACIFIC,2012:159-162.

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