文章基本信息

标题：Radial Velocities of 41 Kepler Eclipsing Binaries
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作者：Rachel A. Matson ; Douglas R. Gies ; Zhao Guo 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2017
卷号：154
期号：6
DOI：10.3847/1538-3881/aa8fd6
语种：English
出版社：American Institute of Physics
摘要：Eclipsing binaries are vital for directly determining stellar parameters without reliance on models or scaling relations. Spectroscopically derived parameters of detached and semi-detached binaries allow us to determine component masses that can inform theories of stellar and binary evolution. Here we present moderate resolution ground-based spectra of stars in close binary systems with and without (detected) tertiary companions observed by NASA's Kepler mission and analyzed for eclipse timing variations. We obtain radial velocities and spectroscopic orbits for five single-lined and 35 double-lined systems, and confirm one false positive eclipsing binary. For the double-lined spectroscopic binaries, we also determine individual component masses and examine the mass ratio distribution, which is dominated by binaries with like-mass pairs and semi-detached classical Algol systems that have undergone mass transfer. Finally, we constrain the mass of the tertiary component for five double-lined binaries with previously detected companions.
关键词：binaries: close;binaries: eclipsing;binaries: spectroscopic;stars: fundamental parameters Supporting material: machine-readable table