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Paper: Bayesian Evidence for Two Populations of White Dwarfs: Preliminary Results
Volume: 509, 20th European Workshop on White Dwarfs (EuroWD16)
Page: 73
Authors: Valentim, R.; Romero, A. D.; Kepler, S. O.; Horvath, J. E.; Rangel, E. M.
Abstract: White dwarf (WD) populations are analyzed using Bayesian tools, which allows inferring possible evolutionary paths through the study of the mass values. We employed a sample of 2761 DA white dwarf stars from the SDSS, and obtained the central mass values and their corresponding standard deviations using a bimodal population as an ansatz. The results indicate a population with M1 = 0.60 M and σ1 = 0.06 M, corresponding to a single stellar evolution, and a second population with M2 = 1.00 M and σ1 = 0.11 M possibly due to binary evolution resulting from mergers.
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