| An orbital period study of the WUMa-type binary RZ Comae Berenicis | |
| Qian SB(钱声帮)1,2; He JJ(何家佳)2; Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. | |
| 发表期刊 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 2005 | |
| 卷号 | 57期号:6页码:977-982 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Stars : Binaries : Close Stars : Binaries : Eclipsing Stars : Individual (Rz Comae Berenicis) |
| 摘要 | New photoelectric and CCD photometry observations of a short-period W UMa-type binary system, RZ Com, are presented. The light curves of Broglia (1960, Contr. Milano-Merate, 165) were symmetric in V band, while the present light curve shows a typical O'Connell effect, with Maximum I brighter than Maximum II by 0.015 mag. It is found that the light curve of the binary star has changed from W-subtype to A-subtype according to Binnendijk's classification. This variation may be caused by the activity of dark spot on the primary component. Combining four newly determined times of the light minimum with others published in the literature, the orbital period change of the system was investigated. A small-amplitude oscillation (A = 0.0058 d), with a period of 44.8 yr has been discovered to be superimposed on a long-term period increase with a rate of dP/dt = +4.12 x 10(-8) d yr(-1). The period oscillation can be explained either by the light-time effect via the presence of an unseen third body or by magnetic-activity cycles of the components. The mass ratio of RZ Com is q = 0.43. The secular period variation is in agreement with the conclusions of Qian (2001, MNRAS, 328, 914; 2003, MNRAS, 342, 1260). This indicates that it is on the TRO-controlled stage of the evolutionary scheme proposed by Qian. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6264 |
| URL | 查看原文 |
| 归档日期 | 2005-12-21 |
| WOS记录号 | WOS:000234607000011 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | THERMAL RELAXATION OSCILLATION ; URSAE MAJORIS SYSTEMS ; CONTACT BINARIES ; LIGHT VARIATION ; CLOSE BINARIES ; AM LEONIS ; MODULATION ; ELEMENTS ; BOOTIS ; CURVE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5783 |
| 专题 | 双星与变星研究组 |
| 通讯作者 | Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012 Beijing, P. R. China |
| 推荐引用方式 GB/T 7714 | Qian SB,He JJ,Qian, SB . An orbital period study of the WUMa-type binary RZ Comae Berenicis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2005,57(6):977-982. |
| APA | Qian SB,He JJ,&Qian, SB .(2005).An orbital period study of the WUMa-type binary RZ Comae Berenicis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,57(6),977-982. |
| MLA | Qian SB,et al."An orbital period study of the WUMa-type binary RZ Comae Berenicis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 57.6(2005):977-982. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| An Orbital Period St（271KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论