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Possible mass and angular momentum loss in ALGOL-TYPE binaries. III. TU Cancri, FZ Delphini, AY Geminorum, VZ Leonis, FH Orionis, IU Persei, XZ Persei, and BE Vulpeculae
Qian SB(钱声帮)1,2; Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2001-03
卷号121期号:3页码:1614-1622
DOI10.1086/319404
产权排序第1完成单位
收录类别SCI
关键词Binaries : Close Stars : Mass Loss
摘要Orbital period variations of eight Algol-type binaries, TU Cnc, FZ Del, AY Gem, VZ Leo, FH Ori, IU Per, XZ Per, and BE Vul, are studied based on the analysis of the O-C observations. It is discovered that the periods of three systems, TU Cnc, FH Ori, and IU Per, show secular decrease. For AY Gem and XZ Per, the orbital periods can be described by a sudden decrease or by two sudden changes superposed on a secular decrease. Weak evidence also shows that the orbital periods of the other three systems, FZ Del, VZ Leo, and BE Vul, are decreasing. As in other systems proposed by Qian, the decrease in the orbital periods of these systems, combined with their semidetached configurations, suggests that they may be undergoing secular mass and angular momentum loss due to magnetic braking. The irregular period jumps superposed on the secular decrease (e.g., in AY Gem, FH Ori, XZ Per, and BE Vul) can be explained by variable magnetic coupling and gravity coupling between the two components. However, the present secular period decrease of these systems may be part of a long-period periodic change (as in TT Del), which needs further investigation.
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2001-06-27
WOS记录号WOS:000167582800034
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD ; STARS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5750
专题双星与变星研究组
通讯作者Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China
2.National Astronomical Observatories and United Laboratory of Optical Astronomy, Chinese Academy of Sciences
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Qian SB,Qian, SB . Possible mass and angular momentum loss in ALGOL-TYPE binaries. III. TU Cancri, FZ Delphini, AY Geminorum, VZ Leonis, FH Orionis, IU Persei, XZ Persei, and BE Vulpeculae[J]. ASTRONOMICAL JOURNAL,2001,121(3):1614-1622.
APA Qian SB,&Qian, SB .(2001).Possible mass and angular momentum loss in ALGOL-TYPE binaries. III. TU Cancri, FZ Delphini, AY Geminorum, VZ Leonis, FH Orionis, IU Persei, XZ Persei, and BE Vulpeculae.ASTRONOMICAL JOURNAL,121(3),1614-1622.
MLA Qian SB,et al."Possible mass and angular momentum loss in ALGOL-TYPE binaries. III. TU Cancri, FZ Delphini, AY Geminorum, VZ Leonis, FH Orionis, IU Persei, XZ Persei, and BE Vulpeculae".ASTRONOMICAL JOURNAL 121.3(2001):1614-1622.
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