YNAO OpenIR  > 双星与变星研究组
RT Leonis Minoris: Does it belong to an A- or W-Type overcontact binary system?
Qian SB(钱声帮)1,2; He JJ(何家佳)1,2; Xiang, FY3; Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2008
卷号60期号:1页码:77-83
产权排序第1完成单位
收录类别SCI
关键词Stars : Binaries : Close Stars : Binaries : Eclipsing Stars : Individual (Rt Leonis Minoris)
摘要New photometric observations and analyses of the W UMa-type binary system RT Leonis Minoris are presented. A period study with our four times of light minimum, including other eclipse times from the literature, suggests that the orbital period of the binary star is variable. The O - C curve can be explained as a cyclic variation with an amplitude of 0.(d)0049 and a period of 46.7 yr. Photometric solutions were derived by using the 2003 version of the Wilson-Devinney method (1971, ApJ, 166, 605), and absolute parameters of the system were determined. The results indicate that RT LMi is an ambiguous W UMa-type overcontact system for the following reasons: (i) the depths of both minima are nearly equal, which makes it very difficult to distinguish whether it belongs to an A- or W-type system; (ii) the primary minima in Hoffmann's light curves are an occultation, indicating a W-type system, while the primary minimum in our light curve is a transit, suggesting an A-type light variation; and (iii) though our light curve shows an A-type variation, the photometric solutions indicate a higher secondary temperature of T-2 = 6513 K (T-1 = 6400 K), making the binary system, surprisingly, of W-type. These may indicate that Binnendijk's classification based on the shape of the light curve cannot reveal the physical properties of W UMa-type binary stars of this kind.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
归档日期2008-03-13
WOS记录号WOS:000255818000008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD MODULATION ; URSAE-MAJORIS SYSTEM ; LIGHT VARIATION ; CLOSE BINARIES ; STARS ; DEEP ; M67
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5814
专题双星与变星研究组
通讯作者Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming 650011, P. R. China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), Beijing 100012, P. R. China
3.Department of Physics, Xiangtan University, Xiangtan 411105, Funan Province, P. R. China
推荐引用方式
GB/T 7714
Qian SB,He JJ,Xiang, FY,et al. RT Leonis Minoris: Does it belong to an A- or W-Type overcontact binary system?[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2008,60(1):77-83.
APA Qian SB,He JJ,Xiang, FY,&Qian, SB .(2008).RT Leonis Minoris: Does it belong to an A- or W-Type overcontact binary system?.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,60(1),77-83.
MLA Qian SB,et al."RT Leonis Minoris: Does it belong to an A- or W-Type overcontact binary system?".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 60.1(2008):77-83.
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
RT Leonis Minoris_ D(456KB)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
[Qian SB(钱声帮)]的文章
[He JJ(何家佳)]的文章
[Xiang, FY]的文章
百度学术
百度学术中相似的文章
[Qian SB(钱声帮)]的文章
[He JJ(何家佳)]的文章
[Xiang, FY]的文章
必应学术
必应学术中相似的文章
[Qian SB(钱声帮)]的文章
[He JJ(何家佳)]的文章
[Xiang, FY]的文章
相关权益政策
暂无数据
收藏/分享
文件名: RT Leonis Minoris_ Does It Belong to an A- or W-Type Overcontact Binary System.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。