Orbital period changes and possible mass and angular momentum loss in two Algol-type binaries: RW Coronae Borealis and TU Herculis
文献类型：期刊论文
| 作者 | Qian SB(钱声帮) |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2000-02 |
| 卷号 | 119期号:2页码:901-905 |
| 关键词 | binaries : close stars : individual (TU Herculis, RW Coronae Borealis) stars : mass loss |
| ISSN号 | 0004-6256 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/119/2/901/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000085275700037 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5740]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 推荐引用方式 GB/T 7714 | 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.(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."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. |
入库方式： OAI收割
来源：云南天文台
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