中国科学院国家天文台机构知识库
Advanced  
NAOC Open IR  > 光学天文研究部  > 期刊论文
题名:
Long-term photometric study of the WUMa binary star V523 Cas
作者: Zhang Xiaobin(张孝斌); Zhang, RX
关键词: binaries : eclipsing ; stars : individual : V523 Cas ; stars : late type
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
发表日期: 2004
卷: 347, 期:1, 页:307-315
收录类别: SCI
英文摘要: We present a long-term photoelectric and charge-coupled device (CCD) photometric study of the short-period W UMa star V523 Cas made from 1986 to 2000. The orbital-period changes and light-curve variations of the binary system are studied. 47 newtimes of minima are obtained from our data. A period study covering more than 43 000 cycles based on the photoelectric and CCD photometric times of minima confirms the long-term, secular period changes of the system. It is found that the orbital period has been continuously increasing in the past three decades at a rate of dP/dt = 8.84 x 10(-8) d yr(-1). No cyclic period variations are found from our result. Eight V and five B completely covered light curves are formed from the observations made in eight epochs. The light curves are of W UMa type and show marked asymmetries with unequal maxima. The differences between the two maxima in each light curve appear to be cyclic over a time-scale of about 8 yr. Based on a one-spot model, the light curves are analysed with the Wilson-Devinney code. The photometric solutions reveal a W-subtype, contact configuration for V523 Cas. The photometric mass ratio is found to be 0.51, and the masses and radii for the components are deduced as 0.75 +/- 0.03 M., 0.74 +/- 0.04 R. for the primary and 0.38 +/- 0.02 M., 0.55 +/- 0.02 R. for the secondary, respectively. We discuss the evolutionary status of the system as well as the possible spot activity along with the mass transfer among the components.
语种: 英语
WOS记录号: WOS:000187257000030
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bao.ac.cn/handle/114a11/8114
Appears in Collections:光学天文研究部_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

Recommended Citation:
Zhang, XB,Zhang, RX. Long-term photometric study of the WUMa binary star V523 Cas[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2004,347(1):307-315.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhang, XB]'s Articles
[Zhang, RX]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhang, XB]‘s Articles
[Zhang, RX]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院国家天文台 - Feedback
Powered by CSpace