Long-time behavior of orbital periods of some Algol-type eclipsing binaries
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2,3 ; Qian, SB
|
| 刊名 | ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
 |
| 出版日期 | 2000-11 |
| 卷号 | 146期号:3页码:377-384 |
| 关键词 | stars : individuals : UW Cyg, RX Hya, AK Ser, AC Tau, UW Vir and VV Vul |
| ISSN号 | 0365-0138 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB |
| 英文摘要 | Orbital 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 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://aas.aanda.org/articles/aas/abs/2000/18/ds9879/ds9879.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000165383900004 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5744]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 通讯作者 | Qian, SB |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：云南天文台
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