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Element Abundances in White Dwarfs of Spectral Type DF

Published online by Cambridge University Press:  25 April 2016

G. Wegner
G. Wegner*
Affiliation:
Mount Stromlo and Siding Spring Observatories, Research School of Physical Sciences, The Australian National University and University of Washington, Seattle
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Extract

DF and DG white dwarfs are the only types which show metal lines (see Greenstein). Presently the only analysis is that of Weidemann who analyzed the star van Maanen 2 and found that the abundances of metals and hydrogen are the order of 10-3 and 10-2 that of solar, respectively. Bues finds H = 1 : 105 and Z = 2 × 10-4 for DB stars.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 1 , July 1971 , pp. 30 - 31
Copyright
Copyright © Astronomical Society of Australia 1971

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References

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