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New Photometric Models of Four Near-Contact Binaries: EP Cassiopeiae, AK Canis Minoris, FG Geminorum, and DF Puppis
Yang YG(杨远贵)1,2; Dai, HF1; He JJ(何家佳)2; Zhang J(张嘉)2; Ding, W1; Dai, HF (reprint author), Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Anhui, Peoples R China.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2013-04-25
卷号65期号:2
DOI10.1093/pasj/65.2.45
产权排序第2完成单位
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individuals (Ep Cassiopeiae Ak Canis Minoris Fg Geminorum Df Puppis)
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.
项目资助者Anhui Provincial Natural Science Foundation [1208085MA04] ; National Natural Science Foundation of China [U1231102, 11133007]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
WOS记录号WOS:000320094000024
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LIGHT CURVES ; STARS ; CATALOG ; EVOLUTION
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5888
专题双星与变星研究组
通讯作者Dai, HF (reprint author), Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Anhui, Peoples R China.
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
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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,&Dai, HF .(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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