Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910301w&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #103.01; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We have investigated the relationship between the kinematics of young (<3x10^8 years) DA white dwarfs and their mass using proper motions. Our sample is largely taken from the color selected SDSS catalog (Eisenstein et. al. 2006) which has spectroscopic temperature and gravity determinations. We find that the dispersion decreases with increasing white dwarf mass. This can be explained as a result of less scattering by objects in the Galactic disk during the shorter lifetime of their more massive progenitors. In addition we have investigated whether the kinematics of the highest mass white dwarfs (>1 solar mass) is consistent with the expected relative contributions of single star evolution and mergers.
Phinney Sterl E.
Wegg Chris
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