The Population of Local White Dwarf Stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The most recent version of the Catalogue of Spectroscopically Identified White Dwarfs (Mc Cook & Sion 1999) lists 2249 white dwarf stars and much new photometric and astrometric data. Approximately 6 either trigonometric parallaxes or distance moduli which place them within 20 pc of the sun. Most of these nearby white dwarfs are isolated stars, but 25 systems, including double degenerate systems. The sample of local white dwarfs is largely complete out to a distance of 13 pc, allowing estimates of the local number density and mass density of white dwarfs stars. This work was supported in part by NASA Grant NAG5-9408

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