Mathematics – Logic
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..504b&link_type=abstract
17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 504-507 (2010).
Mathematics
Logic
1
White Dwarfs, Pulsars, Stellar Mass, Astronomical Telescopes, Visible Spectroscopy, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Pulsars, Masses, Astrometric And Interferometric Instruments, Spectroscopy And Spectrophotometry
Scientific paper
We present our preliminary results on the asteroseismological investigations of the ZZ Ceti star GD 244. We used literature values of the effective temperature and surface gravity and utilized the White Dwarf Evolution Code of Bischoff-Kim, Montgomery and Winget (2008, ApJ, 675, 1512) to build our model grid for the seismological analysis. Five observed pulsational modes published up to now were used to find acceptable model solutions. We found that the best model fits have masses between 0.61 and 0.74 Msolar and constitute two groups with hydrogen layer masses of either ~10-5 or 10-6 Msolar. Based on a statistical analysis of a larger sample of possible model solutions, we assume that the mass of the star is below ~0.68 Msolar and the oxygen content in the centre is less than 60 percent.
Bognar Zs.
Paparo Margit
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