Spectral Analyses of DO White Dwarfs and PG1159 Stars from the Sloan Digital Sky Survey

Details Spectral Analyses of DO White Dwarfs and PG1159 Stars from the Sloan Digital Sky Survey Spectral Analyses of DO White Dwarfs and PG1159 Stars from the Sloan Digital Sky Survey

2005-01-13

arxiv.org/abs/astro-ph/0501252v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, 1 table, requires asp2004.sty, to appear in the proceedings of the 14th European Workshop on White Dwarfs,

Scientific paper

10.1051/0004-6361:20053280

SDSS (DR1 and DR2) has recently proposed 7 new DO white dwarfs as well as 6 new PG1159 stars. This is a significant increase in the known number of DOs and PG1159 stars. Our spectral analyses provide stellar parameters which can then be used to derive constraints for the evolution of H-deficient white dwarfs. A comprehensive understanding of these objects is still severely hampered by low-number statistics.

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