New Photometric Models of Four Near-Contact Binaries: EP Cassiopeiae, AK Canis Minoris, FG Geminorum, and DF Puppis
文献类型：期刊论文
| 作者 | Yang YG(杨远贵)1,2 ; Dai, HF1; He JJ(何家佳)2; Zhang J(张嘉)2; Ding, W1
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2013-04-25 |
| 卷号 | 65期号:2 |
| 关键词 | stars: binaries: close stars: binaries: eclipsing stars: individuals (EP Cassiopeiae, AK Canis Minoris, FG Geminorum, DF Puppis) |
| ISSN号 | 0004-6264 |
| 产权排序 | 第二完成单位 |
| 通讯作者 | Dai, HF (reprint author), Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Anhui, Peoples R China. |
| 英文摘要 | We present new photometric observations of EP Cas, AK CMi, and PG Gem, which were obtained during the period from 2008 October to 2011 March using the 60 cm telescope at the Xinglong station. Several light-minimum times were determined, and orbital periods were revised. By using the 2003-version Wilson-Devinney code, photometric solutions of EP Cas, AK CMi, PG Gem, and DP Pup were deduced from multicolor light curves. The results imply that the four systems are Algol-type near-contact binaries (NCBs), whose less-massive components are filling their Roche lobes. With mass and angular-momentum loss, the separation between both components will decrease, and the primary will finally fill its Roche lobe. Algol-type NCBs of this kind, such as EP Cas, AK CMi, PG Gem, and DF Pup, may evolve into the contact configuration as a progenitor of a W UMa-type binary. |
| 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] | LIGHT CURVES ; STARS ; CATALOG ; EVOLUTION |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/65/2/45 |
| 语种 | 英语 |
| WOS记录号 | WOS:000320094000024 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5888]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.School of Physics and Electronic Information, Huaibei Normal University, 235000 Huaibei, Anhui Province, P. R. China 2.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, P. R. China |
| 推荐引用方式 GB/T 7714 | Yang YG,Dai, HF,He JJ,et al. New Photometric Models of Four Near-Contact Binaries: EP Cassiopeiae, AK Canis Minoris, FG Geminorum, and DF Puppis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2013,65(2). |
| APA | Yang YG,Dai, HF,He JJ,Zhang J,&Ding, W.(2013).New Photometric Models of Four Near-Contact Binaries: EP Cassiopeiae, AK Canis Minoris, FG Geminorum, and DF Puppis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,65(2). |
| MLA | Yang YG,et al."New Photometric Models of Four Near-Contact Binaries: EP Cassiopeiae, AK Canis Minoris, FG Geminorum, and DF Puppis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 65.2(2013). |
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来源：云南天文台
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