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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)
Source PublicationProceedings of IAU Symposium - RECENT INSIGHTS INTO THE PHYSICS OF THE SUN AND HELIOSPHERE: HIGHLIGHTS FROM SOHO AND OTHER SPACE MISSIONS
2001
Issue203
Pages437-440
Author of SourceBrekke, P; Fleck, B; Gurman, JB
Contribution Rank第1完成单位
Indexed BySCI ; CPCI
Conference Name24th General Assembly of the International-Astronomical-Union
Conference Date2000-08-07
Conference PlaceMANCHESTER, ENGLAND
Abstract

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.

Funding OrganizationN/A
Language英语
Subject Area天文学 ; 天体物理学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle; Proceedings Paper
PublisherASTRONOMICAL SOC PACIFIC
Publication Place390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
ISBN1-58381-069-2
ISSN0074-1809
URL查看原文
Archive Date2002-05-17
WOS IDWOS:000175997400104
WOS Research AreaAstronomy & Astrophysics ; Meteorology & Atmospheric Sciences
WOS SubjectAstronomy & Astrophysics ; Meteorology & Atmospheric Sciences
WOS KeywordOrbital Period Modulation ; Term Luminosity Variations ; Close Binaries ; Piscium
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5944
Collection双星与变星研究组
Corresponding AuthorQian SB(钱声帮)
AffiliationYunnan Observatory, NAOCAS, ULOAC, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China
Recommended Citation
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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