Low Mass Companions to White Dwarfs

Details Low Mass Companions to White Dwarfs Low Mass Companions to White Dwarfs

2005-09-07

arxiv.org/abs/astro-ph/0509165v2

Astronomy and Astrophysics

Astrophysics

4 pages with figures, accepted as part of a special issue of AN dedicated to the proceedings of the workshop "Ultralow Mass St

Scientific paper

10.1002/asna.200510434

This paper summarizes the results of over 17 years of work searching for low mass stellar and substellar companions to more than 370 nearby white dwarfs. Roughly 60 low mass, unevolved companions were found and studied all together, with over 20 discovered in the last few years, including the first unambiguous brown dwarf companion to a white dwarf, GD 1400B. The resulting spectral type distributions for companions to white dwarfs and nearby cool field dwarfs are compared, and the implications for binary star formation are discussed. A brief analysis of GD 1400B, including new data, is also presented

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