中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Revisiting the mass-luminosity relation with an effective temperature modifier

文献类型:期刊论文

作者Wang, Jifei1; Zhong, Zehao1,2
刊名ASTRONOMY & ASTROPHYSICS
出版日期2018-10-30
卷号619页码:5
关键词binaries: eclipsing stars: fundamental parameters
ISSN号1432-0746
DOI10.1051/0004-6361/201834109
英文摘要The mass-luminosity relation (MLR) is commonly used to estimate the stellar mass. The classical MLR can hardly fit data of all the stellar mass range, thus researchers have generally adopted piecewise MLRs based on the classical MLR with different exponents for different mass ranges. However, varying turning points for the piecewise MLRs and for the exponent of each segment were used, and the estimated stellar masses are not always as good as those obtained by dynamical methods. We suggest an alternative way to improve the mass estimation accuracy: adding an effective temperature modifier to modify every segment MLR. We use a corresponding estimating equation for G-and K-type main-sequence stars, and verify this equation on two eclipsing binary catalogs. We compare the estimated results with those from a classical MLR and several piecewise MLRs. We find that the new estimates are significantly more accurate than those from the classical MLR and some piecewise MLRs, and they are not inferior to the stellar masses from other piecewise MLRs. This indicates that the temperature modifier can effectively help improve the estimation accuracy. In addition, we discuss the effect of adding the temperature modifier on the practicability of estimating stellar masses.
WOS关键词INFRARED FLUX METHOD ; ANGULAR DIAMETERS ; FUNDAMENTAL PARAMETERS ; ACCURATE MASSES ; NORMAL STARS ; FGK STARS ; INTERFEROMETRY ; RADIUS ; SCALE ; CATALOG
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000448960100001
出版者EDP SCIENCES S A
源URL[http://ir.bao.ac.cn/handle/114a11/23155]  
专题中国科学院国家天文台
通讯作者Wang, Jifei
作者单位1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
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Wang, Jifei,Zhong, Zehao. Revisiting the mass-luminosity relation with an effective temperature modifier[J]. ASTRONOMY & ASTROPHYSICS,2018,619:5.
APA Wang, Jifei,&Zhong, Zehao.(2018).Revisiting the mass-luminosity relation with an effective temperature modifier.ASTRONOMY & ASTROPHYSICS,619,5.
MLA Wang, Jifei,et al."Revisiting the mass-luminosity relation with an effective temperature modifier".ASTRONOMY & ASTROPHYSICS 619(2018):5.

入库方式: OAI收割

来源:国家天文台

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