Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs

Details Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs

2005-03-04

arxiv.org/abs/astro-ph/0503112v1

Astrophys.J. 627 (2005) 404-417

Astronomy and Astrophysics

Astrophysics

6 pages,3 figures, 14th European Workshop on White Dwarfs, ASP Conference Series, in press

Scientific paper

10.1086/430373

We present an analysis of spectroscopic and photometric data for cool DQ white dwarfs based on improved model atmosphere calculations. In particular, we revise the atmospheric parameters of the trigonometric parallax sample of Bergeron et al.(2001), and discuss the astrophysical implications on the temperature scale and mean mass, as well as the chemical evolution of these stars. We also analyze 40 new DQ stars discovered in the first data release of the Sloan Digital Sky Survey.

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