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Atmospheric parameters and mass distribution of DA-white dwarfs

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Abstract

The method of effective temperatureT eff and logg determination for DA-white dwarfs by KSW model atmospheres is analyzed. The existence of systematic errors in logg determination, leading to lower mass values forT eff>15000 K, is demonstrated. With due account to logg corrections, masses for 355 DA-dwarfs were evaluated. The influence of the effects of observational selection on mass distribution has been considered. These effects are connected with the fact that such selection on effects favour discovery of white dwarfs of low masses. The distribution obtained is characterized by the average mass of ∼0.75M ⊙ and the distribution width of ∼0.20M ⊙.

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Authors and Affiliations

  1. Institute of Physics, Academy of Science, Baku, Russia

    O. H. Guseinov, H. I. Novruzova & Y. S. Rustamov

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  1. O. H. Guseinov
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  2. H. I. Novruzova
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  3. Y. S. Rustamov
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Guseinov, O.H., Novruzova, H.I. & Rustamov, Y.S. Atmospheric parameters and mass distribution of DA-white dwarfs. Astrophys Space Sci 96, 1–23 (1983). https://doi.org/10.1007/BF00661939

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  • DOI: https://doi.org/10.1007/BF00661939

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