UVES/VLT spectra of white dwarfs (Koester+, 2001)

Details UVES/VLT spectra of white dwarfs (Koester+, 2001) UVES/VLT spectra of white dwarfs (Koester+, 2001)

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..33780556k&link_type=abstract

VizieR On-line Data Catalog: J/A+A/378/556. Originally published in: 2001A&A...378..556K

Computer Science

Stars: White Dwarf, Magnitudes, Effective Temperatures, Stars: Masses

Scientific paper

We have started a large survey for radial velocity variations in white dwarfs (PI R. Napiwotzki) with the aim of finding close double degenerates, which could be precursor systems for SNe Ia. The UVES spectrograph at the ESO VLT is used to obtain high resolution spectra with good S/N. During this project 1500 white dwarfs will be observed. This unique data set will also allow to derive atmospheric parameters and masses for the largest sample of white dwarfs ever analyzed in a homogeneous way. In this paper we present a catalog of objects and report results for the first sample of about 200 white dwarfs, many of which are spectroscopic confirmations of candidates from the Hamburg ESO Quasar Survey (HE, Cat. ), Montreal-Cambridge-Tololo Survey (MCT), and Edinburgh-Cape Survey (EC, Cat. ) surveys. Among the peculiar spectra we identify two new magnetic DA, one previously known magnetic DA, several DA with emission cores, in some cases due to a late-type companion, and two new DBA. (1 data file).

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