Gaia calibrated UV luminous stars in LAMOST

作     者：Yu Bai Ji-Feng Liu Song Wang 

作者机构：Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences College of Astronomy and Space Sciences University of Chinese Academy of Sciences 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2018年第18卷第12期

页      面：123-130页

核心收录：

学科分类：07[理学] 

基　　金：supported by the National Program on Key Research and Development Project (Grant No.2016YFA0400804) the National Natural Science Foundation of China (NSFC) (Grant Nos.11603038, 11333004, 11425313 and 11403056) STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555 provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts 

主　　题：stars:activity stars:general ultraviolet:stars 

摘      要：We take advantage of Gaia Data Release 2 to present 275 and 1774 ultraviolet luminous stars in the far ultraviolet(FUV) and near ultraviolet(NUV), *** stars exceed their expected values by 5σ with respect to over one million ultraviolet stars in the log g *** extinction is corrected with a 3 D dust *** order to limit the Lutz-Kelker bias to an insignificant level, we select stars with relative uncertainties in luminosity less than 40% and trigonometric parallaxes less than 20%.We cross-identified our sample with the catalogs of RR Lyr stars and possible white dwarf main-sequence binaries, and find they compose ～62% and ～16% of our sample in the FUV and NUV, *** catalog provides a unique sample to study stellar activity, spectrally unresolved compact main-sequence binaries and variable stars.