A first catalogue of automatically selected ultraviolet-excess sources from the UVEX survey

作者：Verbeek Kars^*; de Groot Eelco; Groot Paul J; Scaringi Simone; Drew Janet; Greimel Robert; Irwin Mike; Gonzalez Solares Eduardo; Gaensicke Boris T; Casares Jorge; Corral Santana Jesus M; Deacon Niall; Steeghs Danny

来源：Monthly Notices of the Royal Astronomical Society, 2012, 420(2): 1115-1134.

DOI：10.1111/j.1365-2966.2011.20094.x

• surveys
• stars: general
• ISM: general
• Galaxy: disc
• Galaxy: stellar content
• Galaxy: structure

We present the first catalogue of point-source ultraviolet (UV)-excess sources selected from the UV-Excess Survey of the Northern Galactic Plane (UVEX). UVEX images the Northern Galactic Plane in the U, g, r and He Iota lambda 5875 bands in the Galactic latitude range -5 degrees %26lt; b %26lt; +5 degrees. Through an automated algorithm, which works on a field-to-field basis, we select blue UV-excess sources in 211 square degrees from the (U-g) versus (g-r) colour-colour diagram and the g versus (U-g) and g versus (g-r) colour-magnitude diagrams. The UV-excess catalogue covers the magnitude range 14 %26lt; g %26lt; 22.5, contains 2170 sources and consists of a mix of white dwarfs, post-common-envelope objects, interacting binaries, quasars and active galactic nuclei. Two other samples of outliers were found during the selection: (i) a subdwarf sample, consisting of no less than 9872 candidate metal-poor stars or lightly reddened main-sequence stars, and (ii) a purple sample consisting of 803 objects, most likely a mix of reddened late M giants, T Tauri stars, planetary nebulae, symbiotic stars and carbon stars. Cross-matching the selected UV-excess catalogue with other catalogues aids with the first classification of the different populations and shows that more than 99 per cent of our selected sources are unidentified sources.

• 出版日期2012-2