Statistics – Computation
Scientific paper
Mar 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387..288b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 288-293. Research supported by NSERC and Ministere d
Statistics
Computation
51
Free Convection, Stellar Atmospheres, White Dwarf Stars, Computational Astrophysics, Spectral Line Width, Stellar Temperature
Scientific paper
A detailed calculation of model atmospheres for DA white dwarfs is presented where several versions of the mixing-length theory with different associated convective efficiencies are used. The predicted emergent fluxes, color indices, and equivalent widths are most sensitive to the assumed parameterization of the theory in the range T(eff) about 8000-15,000 K. This, is also the region where the Balmer jump is a most useful gravity discriminant. The implications of the calculations for previous determinations of atmospheric parameters of DA white dwarfs are discussed, and these results are shown to be much more model-dependent than previously believed.
Bergeron Pierre
Fontaine Gérard
Wesemael François
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