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Possible magnetic activity cycles of four chromospherically active binaries: ER Vul, UV Psc, AR lac and BH Vir
Qian SB(钱声帮)
会议录名称Proceedings of IAU Symposium - RECENT INSIGHTS INTO THE PHYSICS OF THE SUN AND HELIOSPHERE: HIGHLIGHTS FROM SOHO AND OTHER SPACE MISSIONS
2001
期号203
页码437-440
会议录编者/会议主办者Brekke, P; Fleck, B; Gurman, JB
产权排序第1完成单位
收录类别SCI ; CPCI
会议名称24th General Assembly of the International-Astronomical-Union
会议日期2000-08-07
会议地点MANCHESTER, ENGLAND
摘要

The study of a possible connection between magnetic activity and orbital period variation in close binaries is a very interesting work. Recently, the orbital periods of four chromospherically active binaries, ER Vul, UV Psc, AR Lac and 1311 Vir, are analyzed. It is discovered that the orbital periods of UV Psc and BH Vir oscillate with periods of 61 and 9.12 years, and the orbital periods of ER Vul and AR Lac show periodic variations with periods of 31 and 47 years respectively while they undergo secular decrease. The mechanisms that could explain the changes in the orbital periods of the four systems have been studied. The period variation of UV Pse may be caused by the cyclical magnetic activity in the primary component, and the magnetic activity in secondary component of AR Lac can explain its periodic component in the orbital period changes. For the other two systems, BH Vir and ER Vul, the cyclical magnetic activity in one or both of the components can explain the cyclical orbital period changes of BH Vir and the periodic component in the changes of the orbital period of ER Vul. These results suggest that the periods of the orbital period oscillations in the four systems may be the magnetic activity cycles.

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Article; Proceedings Paper
出版者ASTRONOMICAL SOC PACIFIC
出版地390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
ISBN号1-58381-069-2
ISSN号0074-1809
URL查看原文
归档日期2002-05-17
WOS记录号WOS:000175997400104
WOS研究方向Astronomy & Astrophysics ; Meteorology & Atmospheric Sciences
WOS类目Astronomy & Astrophysics ; Meteorology & Atmospheric Sciences
关键词[WOS]Orbital Period Modulation ; Term Luminosity Variations ; Close Binaries ; Piscium
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5944
专题双星与变星研究组
通讯作者Qian SB(钱声帮)
作者单位Yunnan Observatory, NAOCAS, ULOAC, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China
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GB/T 7714
Qian SB. Possible magnetic activity cycles of four chromospherically active binaries: ER Vul, UV Psc, AR lac and BH Vir[C]//Brekke, P; Fleck, B; Gurman, JB. 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA:ASTRONOMICAL SOC PACIFIC,2001:437-440.
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文件名: Possible Magnetic Activity Cycles of Four Chromospherically Active Binaries_ER Vul, UV Psc, AR Lac and BH Vir.pdf
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