NAOC Open IR  > 光学天文研究部
Absolute parameters and physical nature of two W-UMa type binaries: V1123 Tau and V1128 Tau
Zhang, Xiao-Bin1; Ren, An-Bin1,2; Luo, Chang-Qing3; Luo, Yang-Ping3
2011-05-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume11Issue:5Pages:583-593
AbstractWe present high-precision, multi-band CCD photometry of two less-studied close binaries V1123 Tau and V1128 Tau. Complete covered light curves and a number of new times of light minima of the two eclipsing systems were obtained, based on which, revised orbital elements and new ephemerides were given. By adopting the Wilson-Devinney method, the light curves were analyzed. The photometric solutions confirm the W UMa-type nature of the binary systems. With the less-massive secondary slightly cooler than the primary, V1123 Tau could be classified as an A-type contact system. While V1128 Tau is typically considered a W-type W UMa star, the surface temperature of its secondary component is determined to be absolutely higher than the primary by about 270 K. Combining with the results of radial-velocity solutions, we determined absolute parameters of the two systems. The mass, radius and luminosity for each component of V1123 Tau were derived as: 1.36 +/- 0.05M(circle dot), 1.37 +/- 0.02R(circle dot), and 2.01 +/- 0.07L(circle dot) and 0.40 +/- 0.02M(circle dot), 0.80 +/- 0.01R(circle dot), and 0.67 +/- 0.04L(circle dot), respectively. For V1128 Tau, the absolute parameters were computed to be 1.09 +/- 0.03M(circle dot), 1.01 +/- 0.01R(circle dot), and 1.34 +/- 0.06L(circle dot) and 0.58 +/- 0.01M(circle dot), 0.76 +/- 0.01R(circle dot), and 0.91 +/- 0.05L(circle dot), respectively. Based on these results, the evolutionary status and the physical nature of the two binary systems are discussed, while also connecting with the theoretical models.
KeywordBinaries: Eclipsing Stars: Late-type Stars: Activity Stars: Individual (V1123 Tau V1128 Tau)
Indexed BySCI
Language英语
WOS IDWOS:000290844200008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7989
Collection光学天文研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.China W Normal Univ, Inst Theoret Phys, Nanchong 637002, Peoples R China
3.Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xiao-Bin,Ren, An-Bin,Luo, Chang-Qing,et al. Absolute parameters and physical nature of two W-UMa type binaries: V1123 Tau and V1128 Tau[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2011,11(5):583-593.
APA Zhang, Xiao-Bin,Ren, An-Bin,Luo, Chang-Qing,&Luo, Yang-Ping.(2011).Absolute parameters and physical nature of two W-UMa type binaries: V1123 Tau and V1128 Tau.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,11(5),583-593.
MLA Zhang, Xiao-Bin,et al."Absolute parameters and physical nature of two W-UMa type binaries: V1123 Tau and V1128 Tau".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 11.5(2011):583-593.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Xiao-Bin]'s Articles
[Ren, An-Bin]'s Articles
[Luo, Chang-Qing]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Xiao-Bin]'s Articles
[Ren, An-Bin]'s Articles
[Luo, Chang-Qing]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Xiao-Bin]'s Articles
[Ren, An-Bin]'s Articles
[Luo, Chang-Qing]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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