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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
学科门类理学 ; 理学::天文学
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
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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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