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Evolutionary Status and Origin of Extremely Hydrogen-Deficient Stars

Published online by Cambridge University Press:  12 April 2016

D. Schönberner
D. Schönberner*
Affiliation:
Institut für Theoretische Physik und Sternwarte der Universität Kiel Olshausenstr. 40, 2300 Kiel, F.R.G.

Abstract

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Our present knowledge about the evolutionary status of extremely hydrogen-deficient stars is reviewed. Possible schemes for their creation are discussed, with special emphasis on a recently proposed binary scenario, according to which they are the result of the merging of two white dwarfs. Finally, the possible generic links between the different groups of extremely hydrogen-deficient stars are briefly discussed.

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