The Measurement of Masses of OB-type Stars from LAMOST DR5

Zhenyan Huo; Zhicun Liu; Wenyuan Cui; Chao Liu; Jiaming Liu; Mingxu Sun; Shuai Feng; Linlin Li

doi:10.3847/1538-4365/ad0fe7

The Astrophysical Journal Supplement Series (Jan 2024)

Affiliations

Zhenyan Huo: Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China
Zhicun Liu: ORCiD; Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China
Wenyuan Cui: ORCiD; Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China
Chao Liu: ORCiD; Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China ; [email protected]; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing 102206, People's Republic of China; University of Chinese Academy of Sciences , Beijing 101408, People's Republic of China
Jiaming Liu: ORCiD; Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China
Mingxu Sun: ORCiD; Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China
Shuai Feng: ORCiD; Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China
Linlin Li: ORCiD; Department of Physics, Hebei Normal University , Shijiazhuang 050024, People's Republic of China ; [email protected]; Guo Shoujing Institute for Astronomy, Hebei Normal University , Shijiazhuang 050024, People's Republic of China

DOI: https://doi.org/10.3847/1538-4365/ad0fe7
Journal volume & issue: Vol. 271, no. 1
p. 15

Abstract

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The measurements of masses and luminosities of massive stars play an important role in understanding the formation and evolution of their host galaxies. In this work, we present the measurement of masses and luminosities of 2946 OB-type stars, including 78 O-type stars and 2868 B-type stars, based on their stellar parameters (effective temperature, surface gravity, and metallicity) and the Padova and Trieste Stellar Evolution Code isochrones model. Our results show that the median mass and luminosity of the 2946 OB-type stars are 5.4 M _⊙ and log( L / L _⊙ ) = 3.2 with median relative errors of 21.4% and 71.1%, respectively. A good agreement between our results estimated by using our method and those derived by using the orbital motions of binary stars from the literature is found for some B-type stars. In addition, we also fit the mass–luminosity relation of B-type stars by using our derived mass and the luminosity from Gaia Data Release 3.

Early-type stars

Published in The Astrophysical Journal Supplement Series

ISSN: 0067-0049 (Print); 1538-4365 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0067-0049

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