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Orbital period changes and possible mass and angular momentum loss in two Algol-type binaries: RW Coronae Borealis and TU Herculis
Qian SB(钱声帮); Qian, SB
发表期刊ASTRONOMICAL JOURNAL
2000-02
卷号119期号:2页码:901-905
产权排序第1完成单位
收录类别SCI
关键词Binaries : Close Stars : Mass Loss Stars : Individual (Tu Herculis Rw Coronae Borealis)
摘要The orbital period of two Algol-type binaries, RW CrB and TU Her, are studied. It is discovered that the orbital period of RW CrB shows a secular decrease at the rate of dP/dt = -4.29 × 10-8 days yr-1, while the orbital period of TU Her varies in some complex way. Two jumps in the orbital period are found while it undergoes secular decrease at a rate of dP/dt = -2.92 × 10-6 days yr-1. The rates of decrease of the orbital periods dP/dt in other Algol-type binaries are revised and the statistical relation between the orbital period P and its rate of change dP/dt is also discussed. The properties of the changes in the orbital period of these systems, combined with their semidetached configurations, demonstrate that they may be undergoing secular mass and angular momentum loss (AML) during their evolution. The irregular abrupt changes that are superposed on the secular decrease of the orbital period may be caused by some instabilities during the mass transfer and AML.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2000-12-31
WOS记录号WOS:000085275700037
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5740
专题双星与变星研究组
通讯作者Qian, SB
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Qian SB,Qian, SB. Orbital period changes and possible mass and angular momentum loss in two Algol-type binaries: RW Coronae Borealis and TU Herculis[J]. ASTRONOMICAL JOURNAL,2000,119(2):901-905.
APA 钱声帮,&Qian, SB.(2000).Orbital period changes and possible mass and angular momentum loss in two Algol-type binaries: RW Coronae Borealis and TU Herculis.ASTRONOMICAL JOURNAL,119(2),901-905.
MLA 钱声帮,et al."Orbital period changes and possible mass and angular momentum loss in two Algol-type binaries: RW Coronae Borealis and TU Herculis".ASTRONOMICAL JOURNAL 119.2(2000):901-905.
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