Abstract
We present optical spectra taken of two white dwarfs in the field of the old open cluster M67. One is of type DA, the other of type DB. The DA is hot (68,000 K) and of standard mass (0.57 M⊙), while the DB is much cooler (17,000 K) and less massive (0.49 M⊙), athough the results for the DB are less certain. Should they prove to be members of the cluster, their existence shows that dwarf stars of near solar mass do beget both hydrogen and helium atmosphere white dwarfs.
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© 1997 Springer Science+Business Media Dordrecht
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Fleming, T.A., Liebert, J., Bergeron, P., Beauchamp, A. (1997). White Dwarfs in M67. In: Isern, J., Hernanz, M., García-Berro, E. (eds) White Dwarfs. Astrophysics and Space Science Library, vol 214. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5542-7_15
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DOI: https://doi.org/10.1007/978-94-011-5542-7_15
Publisher Name: Springer, Dordrecht
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