High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey III. DA white dwarfs
Koester D, Voss B, Napiwotzki R, Christlieb N, Homeier D, Lisker T, Reimers D, Heber U (2009)
Publication Status: Published
Publication Type: Journal article
Publication year: 2009
Journal
Publisher: EDP SCIENCES S A
Book Volume: 505
Pages Range: 441-462
Journal Issue: 1
DOI: 10.1051/0004-6361/200912531
Abstract
Context. The ESO Supernova Ia Progenitor Survey (SPY) took high-resolution spectra of more than 1000 white dwarfs and pre-white dwarfs. About two thirds of the stars observed are hydrogen-dominated DA white dwarfs. Here we present a catalog and detailed spectroscopic analysis of the DA stars in the SPY.Aims. Atmospheric parameters effective temperature and surface gravity are determined for normal DAs. Double-degenerate binaries, DAs with magnetic fields or dM companions, are classified and discussed.Methods. The spectra are compared with theoretical model atmospheres using a chi(2) fitting technique.Results. Our final sample contains 615 DAs, which show only hydrogen features in their spectra, although some are double-degenerate binaries. 187 are new detections or classifications. We also find 10 magnetic DAs (4 new) and 46 DA+dM pairs (10 new).
Authors with CRIS profile
Involved external institutions
Christian-Albrechts-Universität zu Kiel
Germany (DE)
Ruprecht-Karls-Universität Heidelberg
Germany (DE)
Universität Hamburg (UHH)
Germany (DE)
Georg-August-Universität Göttingen
Germany (DE)
University of Hertfordshire
United Kingdom (GB)
Germany (DE)
Ruprecht-Karls-Universität Heidelberg
Germany (DE)
Universität Hamburg (UHH)
Germany (DE)
Georg-August-Universität Göttingen
Germany (DE)
University of Hertfordshire
United Kingdom (GB)
How to cite
APA:
Koester, D., Voss, B., Napiwotzki, R., Christlieb, N., Homeier, D., Lisker, T.,... Heber, U. (2009). High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey III. DA white dwarfs. Astronomy & Astrophysics, 505(1), 441-462. https://doi.org/10.1051/0004-6361/200912531
MLA:
Koester, D., et al. "High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey III. DA white dwarfs." Astronomy & Astrophysics 505.1 (2009): 441-462.
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