Bai Yu; Liu Jifeng; Wang Song
Source Publicationresearchinastronomyandastrophysics
AbstractWe take advantage of Gaia Data Release 2 to present 275 and 1774 ultraviolet luminous stars in the far ultraviolet (FUV) and near ultraviolet (NUV), respectively. These stars exceed their expected values by 5 sigma with respect to over one million ultraviolet stars in the log g vs. T-eff diagram. Galactic extinction is corrected with a 3D dust map. In 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 similar to 62% and similar to 16% of our sample in the FUV and NUV, respectively. This catalog provides a unique sample to study stellar activity, spectrally unresolved compact main-sequence binaries and variable stars.
Funding Project[National Program on Key Research and Development Project] ; [National Natural Science Foundation of China (NSFC)] ; [NASA] ; [NASA Office of Space Science] ; [National Development and Reform Commission]
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Bai Yu,Liu Jifeng,Wang Song. gaiacalibrateduvluminousstarsinlamost[J]. researchinastronomyandastrophysics,2018,18(12):123.
APA Bai Yu,Liu Jifeng,&Wang Song.(2018).gaiacalibrateduvluminousstarsinlamost.researchinastronomyandastrophysics,18(12),123.
MLA Bai Yu,et al."gaiacalibrateduvluminousstarsinlamost".researchinastronomyandastrophysics 18.12(2018):123.
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