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YY Geminorum: A very late type close binary with possible magnetic stellar wind
Qian SB(钱声帮)1,2; Liu, DL3; Tan, WL4; Soonthornthum, B5; Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationASTRONOMICAL JOURNAL
2002-08
Volume124Issue:2Pages:1060-1063
DOI10.1086/339832
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries : Close Stars : Individual (Yy Geminorum) Stars : Mass Loss
AbstractThe O-C curve of the very late type close binary (dMle+dMle)YY Geminorum is formed and analyzed based on all available times of minimum light. It is found that the orbital period shows a secular decrease with rate dP/dt = -1.08x10(-8) days yr(-1). There is weak evidence indicating that a small-amplitude period oscillation is superposed on the period decrease. YY Gem is a well-detached eclipsing binary containing two very active components. The secular period decrease may suggest that the system is undergoing secular mass and angular momentum loss via a magnetic stellar wind. If the small-amplitude oscillation is real, it can be explained either by magnetic activity cycles or by the presence of a giant planet or brown dwarf.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6256
URL查看原文
Archive Date2002-09-18
WOS IDWOS:000176888900033
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordORBITAL PERIOD MODULATION ; STARS
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5756
Collection双星与变星研究组
Corresponding AuthorQian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences
3.Nayong County Second Middle School, 553300 Nayong, Guizhou, China
4.Department of Physics, Guizhou Normal University, 550001 Guiyang, Guizhou, China
5.Department of Physics, Chiang Mai University, 50200 Chiang Mai, Thailand
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Liu, DL,Tan, WL,et al. YY Geminorum: A very late type close binary with possible magnetic stellar wind[J]. ASTRONOMICAL JOURNAL,2002,124(2):1060-1063.
APA Qian SB,Liu, DL,Tan, WL,Soonthornthum, B,&Qian, SB .(2002).YY Geminorum: A very late type close binary with possible magnetic stellar wind.ASTRONOMICAL JOURNAL,124(2),1060-1063.
MLA Qian SB,et al."YY Geminorum: A very late type close binary with possible magnetic stellar wind".ASTRONOMICAL JOURNAL 124.2(2002):1060-1063.
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