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Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs | | P. Dufour
; P. Bergeron
; G. Fontaine
; | | Date: |
4 Mar 2005 | | Journal: | Astrophys.J. 627 (2005) 404-417 | | Subject: | astro-ph | | Abstract: | 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. | | Source: | arXiv, astro-ph/0503112 | | Services: | Forum | Review | PDF | Favorites | |
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