Computer Science – Databases
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273....1t&link_type=abstract
17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 1-6 (2010).
Computer Science
Databases
1
White Dwarfs, Stark Broadening, Sky Surveys, Photometry, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Zeeman And Stark Effects, Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc., Photometric, Polarimetric, And Spectroscopic Instrumentation
Scientific paper
We have recently published a new set of model spectra for DA white dwarfs with improved Stark broadening and obtained sound results for the mass distribution of hot DA stars identified in the PG sample. We apply here these improved model spectra to the large SDSS sample of DA white dwarfs that includes many stars cooler than 12,000 K, where the problem of abnormally high surface gravities has been observed. We attempt to determine the best compromise between the size of our selected sample and the signal-to-noise ratio of the optical spectra. We present improvements made in our understanding of the general properties of the sample, such as the mass distribution as a function of effective temperature, and compare the results to other large DA samples. We finally report on the detection of double degenerate binary systems.
Bergeron Pierre
Tremblay P.-E.
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