Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-13
Astronomy and Astrophysics
Astrophysics
10 pages, 28 figures, accepted for publication by A&A
Scientific paper
10.1051/0004-6361:20011588
We present the first analysis of an EUV selected sample of hot DA white dwarfs using a new type of atmospheric models. These models take into account the interplay between gravitational settling and radiative acceleration to predict the chemical stratification from an equilibrium between the two forces while self-consistently solving for the atmospheric structure. In contrast to atmospheric models with the assumption of chemical homogeneity, the number of free parameters in the new models is reduced to the effective temperature and surface gravity alone. The overall good reproduction of observed EUV spectra reveals that these models are able to describe the physical conditions in hot DA white dwarf atmospheres correctly. A comparison with previous analyses highlights the improvements as well as the limits of our new models.
Dreizler Stefan
Schuh S. L.
Wolff Burkhard
No associations
LandOfFree
Equilibrium abundances in hot DA white dwarfs as derived from self-consistent diffusion models I. Analysis of spectroscopic EUVE data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Equilibrium abundances in hot DA white dwarfs as derived from self-consistent diffusion models I. Analysis of spectroscopic EUVE data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equilibrium abundances in hot DA white dwarfs as derived from self-consistent diffusion models I. Analysis of spectroscopic EUVE data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-631886