NEAR-CONTACT BINARIES WITH MASS TRANSFER: V473 CASSIOPEIAE AND II PERSEI
文献类型：期刊论文
| 作者 | Zhu LY(朱俐颖)1,2 ; Qian SB(钱声帮)1,2; Zola, S3,4; Kreiner, JM3
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2009-03 |
| 卷号 | 137期号:3页码:3574-3580 |
| 关键词 | binaries: close binaries: eclipsing stars: evolution stars: individual (II Persei, V473 Cassiopeiae) |
| ISSN号 | 0004-6256 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Zhu, LY (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | Photometric solutions of two short period close binaries, V473 Cas and II Per, are derived with the 2003 version Wilson-Van Hamme code. It is shown that V473 Cas is a semidetached system with the primary component or the secondary component at its critical Roche Lobe, while II Per is a marginal contact binary system with both components filling their critical Roche Lobes, but with a large temperature difference between the two components. Both systems belong to near-contact binaries with the light curves enhanced around the left shoulder of secondary minimum, which can be explained by hot spots on the secondary components due to the mass transfer via a stream hitting the facing surface of the secondary components. The orbital period investigations based on all available times of light minimum show a secular period existing in these two targets decreasing at the rate of dP/dt = -7.61 x 10(-8) days yr(-1) for V473 Cas and dP/dt = -7.54 x 10(-8) days yr(-1) for II Per. The decrease of the orbital period can be the result of mass transfer from the primary component to the secondary one, which is consistent with the asymmetric light curves of V473 Cas and II Per. Therefore, V473 Cas and II Per are other examples displaying evidence of mass transfer between the two components. We have collected NCBs with secular period variation and find that almost all SD1-type NCBs show decreasing periods and enhancing luminosity on the left shoulder of secondary minimum in their light curves. So the semidetached configuration with the lobe filling primary is more plausible for V473 Cas. Furthermore, the detected enhancing amplitude of luminosity for SD2-type NCBs is smaller than other types of NCBs, which implies that the mass transfer from the primary component to the secondary one is stronger than the transfer in opposite direction. With the orbital period decrease, V473 Cas and II Per will evolve into overcontact binaries with true thermal contact. |
| 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] | URSAE MAJORIS SYSTEMS ; UBV PHOTOMETRY ; LIGHT CURVES ; STAR LIGHT ; CN ANDROMEDAE ; CANIS-MINORIS ; V432 PERSEI ; HL-AURIGAE ; PERIOD ; COMPONENTS |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/137/3/3574/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000263719800013 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5827]  |
| 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, 650011 Kunming, People's Republic of China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012 Beijing, People's Republic of China 3.Mt. Suhora Observatory of the Pedagogical University, ul. Podchorążych 2, 30-084 Krakow, Poland 4.Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244, Krakow, Poland |
| 推荐引用方式 GB/T 7714 | Zhu LY,Qian SB,Zola, S,et al. NEAR-CONTACT BINARIES WITH MASS TRANSFER: V473 CASSIOPEIAE AND II PERSEI[J]. ASTRONOMICAL JOURNAL,2009,137(3):3574-3580. |
| APA | Zhu LY,Qian SB,Zola, S,&Kreiner, JM.(2009).NEAR-CONTACT BINARIES WITH MASS TRANSFER: V473 CASSIOPEIAE AND II PERSEI.ASTRONOMICAL JOURNAL,137(3),3574-3580. |
| MLA | Zhu LY,et al."NEAR-CONTACT BINARIES WITH MASS TRANSFER: V473 CASSIOPEIAE AND II PERSEI".ASTRONOMICAL JOURNAL 137.3(2009):3574-3580. |
入库方式： OAI收割
来源：云南天文台
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