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High Resolution Optical Spectra of 120 White Dwarfs

Published online by Cambridge University Press:  12 April 2016

David Tytler  and
Eric Rubenstein
David Tytler
Affiliation:
Columbia University
Eric Rubenstein
Affiliation:
Columbia University

Abstract

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High quality optical spectra of 120 white dwarfs have been obtained to search for double degenerate systems, some of which might become type I supernovae. No systems with high amplitude velocity variations have been found. However several exceptionally cool DA white dwarfs have been found to show weak Helium absorption lines, and four stars have split H-alpha line cores indicative of binary systems.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 524
Copyright
Copyright © Springer-Verlag 1989

References

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