The population of hot subdwarf stars studied with Gaia: I. the catalog of known hot subdwarf stars

S. Geier, R. H. Østensen, P. Nemeth, N. P. Gentile Fusillo, B. T. Gänsicke, J. H. Telting, E. M. Green, J. Schaffenroth

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

In preparation for the upcoming all-sky data releases of the Gaia mission we compiled a catalog of known hot subdwarf stars and candidates drawn from the literature and yet unpublished databases. The catalog contains 5613 unique sources and provides multi-band photometry from the ultraviolet to the far infrared, ground based proper motions, classifications based on spectroscopy and colors, published atmospheric parameters, radial velocities and light curve variability information. Using several different techniques we removed outliers and misclassified objects. By matching this catalog with astrometric and photometric data from the Gaia mission, we will develop selection criteria to construct a homogeneous, magnitude-limited all-sky catalog of hot subdwarf stars based on Gaia data.

Original languageEnglish (US)
Article numberA50
JournalAstronomy and astrophysics
Volume600
DOIs
StatePublished - Apr 1 2017

Keywords

  • Stars: Horizontal-branch
  • Subdwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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