DETECTION OF A GIANT EXTRASOLAR PLANET ORBITING THE ECLIPSING POLAR DP LEO
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2,3 ; Liao WP(廖文萍)1,2,3; Zhu LY(朱俐颖)1,2,3; Dai ZB(戴智斌)1,2,3
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2010 |
| 卷号 | 708期号:1页码:L66-L68 |
| 关键词 | binaries: close binaries: eclipsing novae, cataclysmic variables planetary systems stars: individual (DP Leo) |
| ISSN号 | 2041-8205 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | DP Leo is the first discovered eclipsing polar with a short period of 1.4967 hours. The period variation of the eclipsing binary was analyzed by using five new determined eclipse times together with those compiled from the literature. It is discovered that the O - C curve of DP Leo shows a cyclic variation with a period of 23.8 years and a semiamplitude of 31.5 s. The small-amplitude periodic change can be plausibly explained as the light-travel time effect due to the presence of a tertiary companion. The mass of the tertiary component is determined to be M(3) sin i' = 0.00600(+/- 0.00055) M(circle dot) = 6.28(+/- 0.58) M(Jupiter) when a total mass of 0.69 M(circle dot) is adopted. If the tertiary companion is coplanar to the eclipsing binary (i.e., i' = 79 degrees.5), it should be a giant extrasolar planet with a mass of 6.39 M(Jupiter) at a distance of 8.6 astronomical units to the central binary. One of the most interesting things that we have learned about extrasolar planets over the last 17 years is that they can exist almost anywhere. The detection of a giant planet orbiting a polar would provide insight into the formation and evolution of circumbinary planets (planets orbiting both components of short-period binaries) as well as the late evolution of binary stars. |
| 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] | WHITE-DWARF STARS ; MAGNETIC BRAKING ; BROWN DWARF ; DODO SURVEY ; NN-SER ; COMPANION ; SYSTEM ; SUBSTELLAR ; ROTATION ; BINARIES |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/2041-8205/708/1/L66/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000273306700015 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5843]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 2.Graduate University of the Chinese Academy of Sciences, 100049 Beijing, China 3.Laboratory of the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China |
| 推荐引用方式 GB/T 7714 | Qian SB,Liao WP,Zhu LY,et al. DETECTION OF A GIANT EXTRASOLAR PLANET ORBITING THE ECLIPSING POLAR DP LEO[J]. ASTROPHYSICAL JOURNAL LETTERS,2010,708(1):L66-L68. |
| APA | Qian SB,Liao WP,Zhu LY,&Dai ZB.(2010).DETECTION OF A GIANT EXTRASOLAR PLANET ORBITING THE ECLIPSING POLAR DP LEO.ASTROPHYSICAL JOURNAL LETTERS,708(1),L66-L68. |
| MLA | Qian SB,et al."DETECTION OF A GIANT EXTRASOLAR PLANET ORBITING THE ECLIPSING POLAR DP LEO".ASTROPHYSICAL JOURNAL LETTERS 708.1(2010):L66-L68. |
入库方式： OAI收割
来源：云南天文台
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