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Possible mass and angular momentum loss in Algol-type binaries. IV. UU Andromedae and Z Persei
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
2001-09
卷号122期号:3页码:1561-1568
DOI10.1086/322179
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 (Uu Andromedae z Persei Bo Monocerotis y Piscium)
摘要The orbital periods of two Algol-type binaries, UU And and Z Per, are studied based on the analysis of the O-C data. It is discovered that the orbital period of UU And shows seven irregular jumps while it undergoes a secular decrease with rate of dP/dt = -4.76x10(-7) days yr(-1). For Z Per, seven irregular period jumps are also found superposed on a rapid period decrease (dP/dt = -1.54x10(-6) days yr(-1)). Meanwhile, the orbital period changes of two other systems, BO Mon and Y Psc, studied in Paper II of this series, are reinvestigated by combining our previous data with earlier published times of light minimum. The secular period decrease rates of the two systems are revised, and apart from the sudden jumps proposed in Paper II, additional period jumps superposed on the secular period decrease are found. The period changes of these systems, both the decreases and the jumps, can be explained by secular mass and angular momentum loss via magnetic braking.
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2001-11-21
WOS记录号WOS:000170997700035
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/114a53/5748
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. IV. UU Andromedae and Z Persei[J]. ASTRONOMICAL JOURNAL,2001,122(3):1561-1568.
APA Qian SB,&Qian, SB .(2001).Possible mass and angular momentum loss in Algol-type binaries. IV. UU Andromedae and Z Persei.ASTRONOMICAL JOURNAL,122(3),1561-1568.
MLA Qian SB,et al."Possible mass and angular momentum loss in Algol-type binaries. IV. UU Andromedae and Z Persei".ASTRONOMICAL JOURNAL 122.3(2001):1561-1568.
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