YNAO OpenIR  > 双星与变星研究组
DI Hya: A Near-contact Binary with a Close-in Companion
Liao WP(廖文萍)1,2; Qian SB(钱声帮)1,2,3; Li LJ(李临甲)1,2; Zhou X(周肖)1,2; Zhao EG(赵二刚)1,2,3; Zhang J(张嘉)1,2
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
2017-03-01
卷号129期号:973
DOI10.1088/1538-3873/aa5869
产权排序第1完成单位
收录类别SCI
关键词Stars:) Binaries (Including Multiple): Close (Stars:) Binaries: Eclipsing Stars: Evolution Stars:Individual
摘要DI Hya is a short-period eclipsing binary and its classification has been discussed by several authors. New four-color light curves were obtained and have been analyzed together with the data from Manimanis & Niarchos simultaneously using the W-D method. The binary turns out to be a near-contact system where both components are filling or nearly filling their critical Roche lobes. The secondary has a temperature difference of Delta T similar or equal to-2800 K. The orbital period investigation has been ignored so far. All charge-coupled devices (CCD)and pe times of light minima are used for period analysis, showing that a cyclic variation with a short period of 1.46 years and a small semi-amplitude of 0.0034 days and a downward parabolic variation with a rate of P = -2.98(+/- 0.32)x 10(-7)days yr(-1). The short period and small semi-amplitude cyclic variations were analyzed for the light-travel time effect via the presence of a close-in tertiary binary with an orbital separation shorter than 1.57(+/- 0.31) au. Orbital properties of this close-in companion should provide valuable information on the formation of this short-period binary and stellar dynamical interaction. The downward parabolic change may be caused by angular momentum loss via an enhanced stellar wind of the more evolved secondary star.
项目资助者National Natural Science Foundation of China(11403095, 11325315, U1631108) ; Yunnan Natural Science Foundation(2014FB187) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of Chinese Academy of Sciences(XDB09010202)
语种英语
学科领域天文学
文章类型Article
ISSN0004-6280
URL查看原文 ; 查看原文
归档日期2017-10-16
WOS记录号WOS:000423186500001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD CHANGES ; ANGULAR-MOMENTUM LOSS ; ALGOL-TYPE BINARIES ; VELOCITY CURVES ; POSSIBLE MASS ; LIGHT
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11905
专题双星与变星研究组
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, Kunming 650216, Republic of China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
3.University of Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, 100049 Beijing, China
推荐引用方式
GB/T 7714
Liao WP,Qian SB,Li LJ,et al. DI Hya: A Near-contact Binary with a Close-in Companion[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2017,129(973).
APA Liao WP,Qian SB,Li LJ,Zhou X,Zhao EG,&Zhang J.(2017).DI Hya: A Near-contact Binary with a Close-in Companion.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,129(973).
MLA Liao WP,et al."DI Hya: A Near-contact Binary with a Close-in Companion".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 129.973(2017).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
DI Hya_ A Near-conta(827KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liao WP(廖文萍)]的文章
[Qian SB(钱声帮)]的文章
[Li LJ(李临甲)]的文章
百度学术
百度学术中相似的文章
[Liao WP(廖文萍)]的文章
[Qian SB(钱声帮)]的文章
[Li LJ(李临甲)]的文章
必应学术
必应学术中相似的文章
[Liao WP(廖文萍)]的文章
[Qian SB(钱声帮)]的文章
[Li LJ(李临甲)]的文章
相关权益政策
暂无数据
收藏/分享
文件名: DI Hya_ A Near-contact Binary with a Close-in Companion.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。