An orbital period analysis of the dwarf novae OY Carinae
文献类型：期刊论文
| 作者 | Han ZT(韩忠涛)1,2,3 ; Qian SB(钱声帮)1,2,3; Lajus, EF4,5; Liao WP(廖文萍)1,2,3; Zhang J(张嘉)1,2,3
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| 刊名 | NEW ASTRONOMY
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| 出版日期 | 2015-01 |
| 卷号 | 34页码:1-5 |
| ISSN号 | 1384-1076 |
| 关键词 | Stars: binaries: eclipsing Stars: binaries: dwarf novae Stars: individual: OY Carinae |
| 通讯作者 | Han, ZT (reprint author), Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Beijing 100864, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | By using our twelve new CCD times of light minimum of OY Carinae COY Car) together with those collected from the literature, it is found that the O-C curve of OY Car shows a downward parabola with an amplitude of 27.8 s and a cyclic change of a period 14.0 yr. The period decrease is opposite to the hypothesis of mass transfer, and it cannot be explained by angular momentum loss via gravitational radiation. The Rappaport et al. (1983)'s magnetic braking (MB) prescription is adopted to explain the observed orbital period decrease. The cyclic change of period is analyzed with the light travel-time effect that originates from gravitational influence of a third body. The mass of the third star is determined to be M(3)sini' = 0.008097(+/- 0.000014) M-circle dot = 8.48(+/- 0.02) M-Jup, suggesting that it may be a critical substellar object between brown dwarf and giant planet. If the orbital inclination of the third body equals 90 degrees, the distance between the third body and the mass centre of the whole system is about 6.18(+/- 0.45) AU. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SCALE MAGNETIC TOPOLOGIES ; CHROMOSPHERIC ACTIVITY ; CATACLYSMIC VARIABLES ; WHITE-DWARF ; BRAKING ; QUIESCENCE ; STARS ; PHOTOMETRY ; ROTATION ; ECLIPSE |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107614000645 |
| 语种 | 英语 |
| WOS记录号 | WOS:000342530900001 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5925]  |
| 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.Yunnan Observatories, Chinese Academy of Sciences, P. O. Box 110, 650011 Kunming, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PR China 3.Graduate School of the Chinese Academy of Sciences, Yuquan Road 19#, SijingShan Block, 100049 Beijing City, PR China 4.Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires, Argentina 5.Instituto de Astrofisica de La Plata (CCT La plata - CONICET/UNLP), Argentina |
| 推荐引用方式 GB/T 7714 | Han ZT,Qian SB,Lajus, EF,et al. An orbital period analysis of the dwarf novae OY Carinae[J]. NEW ASTRONOMY,2015,34:1-5. |
| APA | Han ZT,Qian SB,Lajus, EF,Liao WP,&Zhang J.(2015).An orbital period analysis of the dwarf novae OY Carinae.NEW ASTRONOMY,34,1-5. |
| MLA | Han ZT,et al."An orbital period analysis of the dwarf novae OY Carinae".NEW ASTRONOMY 34(2015):1-5. |
入库方式： OAI收割
来源：云南天文台
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