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Long-time behavior of orbital periods of some Algol-type eclipsing binaries
Qian SB(钱声帮)1,2,3; Qian, SB
Source PublicationASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
2000-11
Volume146Issue:3Pages:377-384
DOI10.1051/aas:2000276
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars : Individuals : Uw Cyg Rx Hya Ak Ser Ac Tau Uw Vir And Vv Vul
AbstractOrbital period variations of six semi-detached binaries, UW Cyg, RX Hya, AK Ser, AC Tau, UW Vir and VV Vul, are presented based oil the analysis of their O-C observations. For AK Ser and VV Vul, their orbital periods may show secular increase at rates of dP/dt = +7.94 10(-7) and +3.43 10(-6) days/year. For UW Cyg, its orbital period is revised, and the O-C curve shows a cyclic variation with a period of 49.2 years and an amplitude of 0.(d)0383. For the other three systems, RX Hya. AC Tau and UW Vir, the changes in their orbital periods appear more complex but their. O-C curves can be represented by periodic variations (with periods of 54.3, 29.8 and 45.9 years) superimposed on upward parabolic segments. The components of up-ward curving parabolic variations in nx Hya, ne Tau and UW Vir indicate secular period increase with rates of dP/dt = +1.04 10(-6), +7.11 10(-7) and +1.73 10(-6) days/year respectively. The secular period increase in the five systems, RX Hya, AK Ser, AC Tau, UW Vir and VV Vul, can be explained by mass transfer from the less to the massive components, which is consistent with their semi-detached configurations. The periodic changes of the orbital periods in UW Cyg, RX Hya, AC Tau, UW Vir may be caused by the light-time effects due tu the existence of the third bodies.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0365-0138
URL查看原文
Archive Date2000-12-31
WOS IDWOS:000165383900004
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5744
Collection双星与变星研究组
Corresponding AuthorQian, SB
Affiliation1.Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, PR China
2.National Astronomical Observatories, Chinese Academy of Science (NAOCAS), PR China
3.United Laboratory of Optical Astronomy, Chinese Academy of Science (ULOAC), PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Qian, SB. Long-time behavior of orbital periods of some Algol-type eclipsing binaries[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,2000,146(3):377-384.
APA Qian SB,&Qian, SB.(2000).Long-time behavior of orbital periods of some Algol-type eclipsing binaries.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,146(3),377-384.
MLA Qian SB,et al."Long-time behavior of orbital periods of some Algol-type eclipsing binaries".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 146.3(2000):377-384.
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