Period and light-curve changes in AP Leonis
文献类型：期刊论文
| 作者 | Li LF(李立芳)1,2 ; Zhang FH(张奉辉)1,2; Han ZW(韩占文)1,2
|
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2002 |
| 卷号 | 54期号:1页码:73-77 |
| 关键词 | binaries : eclipsing stars : activity stars : evolution stars : individual (AP Leo) stars : pulsations |
| ISSN号 | 0004-6264 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Li, LF (reprint author), CAS, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan Province, Peoples R China. |
| 英文摘要 | We present a detailed study of the period and light curve of the eclipsing binary AP Leo. We have investigated the period variation of the system in detail using a method proposed by Kalimeris et al. (1994a,b; AAA 061.117.039, AAA 062.117.142). The orbital period of the system exhibits a periodic variation which contains four components with different frequencies. Our result is very different from that of other investigators. We compared light curves obtained by other groups, and found that the light curve of the system has changed considerably. Based on an analysis, we investigated the physical mechanisms which may underlie the variations of the period and the light curve, and obtained some new results. We have concluded that the rapid light variation is probably caused by a pulsation of the common envelope, and that the mechanism causing the pulsation may be mass transfer between the two components, or its variation. In addition, we have found that the mass transfer and magnetic activity may simultaneously play an important role in the variations in the orbital period and the light curve of the system. The paper concludes with a discussion of the evolution of the system. |
| 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 |
| 关键词[WOS] | ORBITAL PERIOD ; AB-ANDROMEDAE ; BINARIES ; STARS |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/54/1/73 |
| 语种 | 英语 |
| WOS记录号 | WOS:000174212000010 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4400]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 作者单位 | 1.Yunnan Observatory, National Astronomical Observatories, CAS, P. O. Box 110, Kunming, Yunnan Province 650011, P. R. China 2.United Laboratory for Optical Astronomy, Chinese Academy of Sciences, P. R. China |
| 推荐引用方式 GB/T 7714 | Li LF,Zhang FH,Han ZW. Period and light-curve changes in AP Leonis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2002,54(1):73-77. |
| APA | Li LF,Zhang FH,&Han ZW.(2002).Period and light-curve changes in AP Leonis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,54(1),73-77. |
| MLA | Li LF,et al."Period and light-curve changes in AP Leonis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 54.1(2002):73-77. |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
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。