The first CCD photometric study of the neglected WUMa-type binary PP Lacertae
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1 ; Zhu LY(朱俐颖)1; Boonruksar, S2
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| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2005-10 |
| 卷号 | 11期号:1页码:52-58 |
| 关键词 | stars : binaries : close stars : binaries : eclipsing stars : individuals : PP lacertae |
| ISSN号 | 1384-1076 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB (reprint author), Chinese Acad Sci, United Lab Opt Astron, Beijing 100012, Peoples R China. |
| 英文摘要 | The first complete charge couple device (CCD) photometric light curve in V band of the neglected W UMa-type binary star, PP Lacertae, is presented. It is shown that the system is a complete eclipsing binary and belongs to W type according to Binnendijk's classification where the occultation minimum is much deep than the transit one. The light curve is symmetric and no day-to-day variation of the light curve was found. These properties enable good chance to determine photometric parameters of the binary system. Photometric solutions based on the complete light curve were derived with the 2003 version of the W-D code. It is suggested that PP Lacertae is a W-type overcontact binary system with a mass ratio of q = 2.3000(+/- 0.0044) and a median degree of overcontact off = 23.9%(+/- 1.1%). The temperature of the less massive component is about 260 K higher than that of the more massive one. Our four CCD times of light minimum, including others collected from the literature, have been used for the period study. It is found that the period showed a small-amplitude cyclic oscillation with a period of 19.7 years and an amplitude of 0.(d)0058, which can be explained as the light-time effect of an unseen third body. (C) 2005 Elsevier B.V. All rights reserved. |
| 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] | THERMAL RELAXATION OSCILLATION ; ORBITAL PERIOD MODULATION ; AO-CAMELOPARDALIS ; CONTACT BINARIES ; CLOSE BINARIES ; LIGHT CURVES ; STARS ; SYSTEMS ; LEONIS |
| 收录类别 | SCI ; EI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107605000795 |
| 语种 | 英语 |
| WOS记录号 | WOS:000232917200005 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5776]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Yunnan Province 650011, Kunming, PR China 2.Astronomy Research Unit, Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailan |
| 推荐引用方式 GB/T 7714 | Qian SB,Zhu LY,Boonruksar, S. The first CCD photometric study of the neglected WUMa-type binary PP Lacertae[J]. NEW ASTRONOMY,2005,11(1):52-58. |
| APA | Qian SB,Zhu LY,&Boonruksar, S.(2005).The first CCD photometric study of the neglected WUMa-type binary PP Lacertae.NEW ASTRONOMY,11(1),52-58. |
| MLA | Qian SB,et al."The first CCD photometric study of the neglected WUMa-type binary PP Lacertae".NEW ASTRONOMY 11.1(2005):52-58. |
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来源：云南天文台
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