Spectroscopy of the DA white dwarfs - Automatic atmospheric parameterization and mass distribution

Details Spectroscopy of the DA white dwarfs - Automatic atmospheric parameterization and mass distribution Spectroscopy of the DA white dwarfs - Automatic atmospheric parameterization and mass distribution

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...336..409m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 336, Jan. 1, 1989, p. 409-420.

Astronomy and Astrophysics

Astrophysics

40

Astronomical Spectroscopy, Atmospheric Models, Stellar Atmospheres, White Dwarf Stars, Mass Distribution, Parameterization, Spectrum Analysis, Stellar Mass Ejection, Stellar Models, Stellar Spectra

Scientific paper

A method for the automatic calculation of the atmospheric parameters (Teff and log g) of hydrogen-rich degenerate stars from low-resolution spectra is described, and then applied to the spectra of 53 DA white dwarfs. A value for the width of the DA mass distribution of sigma M/solar-M not greater than +0.10 is obtained using the proposed approach. The data indicate that the distribution is asymmetrically skewed to low masses; however, there is also evidence of a high-mass non-Gaussian tail.

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