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SDSS J012119.10-001949.9: a very short period M dwarf contact binary from SDSS stripe 82
Jiang LQ(江林巧)1,2,3; Qian SB(钱声帮)1,2,3; Zhang J(张嘉)1,2
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2015-12
Volume15Issue:12Pages:2237-2243
DOI10.1088/1674-4527/15/12/011
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Eclipsing Stars: Individual (Sdss J012119.10-001949.9) Techniques: Photometric
Abstract

We present the first multicolor photometric observations of the short period low-mass eclipsing binary SDSS 3012119.10-001949.9. By using the 2013 version of the Wilson-Devinney code, the photometric solutions are derived. It is found that the system is in a contact configuration (f =- 18.9 +/- 6.0%) with a moderate mass ratio of 0.5 +/- 0.01. A third light contributing about 6.1 +/- 1.3% of the total luminosity in the V band was found, which may come from a cool tertiary component. The derived high orbital inclination (i = 83.9 degrees +/- 0.5 degrees) and the almost symmetric three light curves suggest that the determined parameters are reliable. Both the color class and spectral class of the system correspond to a spectral type of MO, which may indicate that SDSS J012119.10-001949.9 belongs to a very rare class of M dwarf contact binaries that are below the theoretical short period limit.

Funding ProjectNational Natural Science Foundation of China[11133007] ; National Natural Science Foundation of China[11325315] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011]
Funding OrganizationNational Natural Science Foundation of China[11133007, 11325315] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS IDWOS:000367563300011
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTAR LIGHT CURVES ; LOW-MASS STARS ; ECLIPSING BINARIES ; VELOCITY CURVES ; LIMIT ; J001641-000925 ; CANDIDATES ; EVOLUTION ; SYSTEM
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9394
Collection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
Corresponding AuthorJiang LQ(江林巧)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jiang LQ,Qian SB,Zhang J. SDSS J012119.10-001949.9: a very short period M dwarf contact binary from SDSS stripe 82[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(12):2237-2243.
APA Jiang LQ,Qian SB,&Zhang J.(2015).SDSS J012119.10-001949.9: a very short period M dwarf contact binary from SDSS stripe 82.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(12),2237-2243.
MLA Jiang LQ,et al."SDSS J012119.10-001949.9: a very short period M dwarf contact binary from SDSS stripe 82".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.12(2015):2237-2243.
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