The Puzzling White Dwarf Cooling Sequence in NGC6791: A Simple Solution

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Authors
Bedin, L. R.
Salaris, M.
Piotto, G.
Cassisi, S.
Milone, A. P.
Anderson, J.
King, I. R.
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Abstract
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In this paper we demonstrate that the puzzling bright peak in the luminosity function of the white dwarf (WD) cooling sequence of NGC6791 can be naturally accounted for if ~34% of the observed WDs are WD+WD binary systems.
Comment: 12 pages, 3 figures. Accepted (April 9th 2008) on ApJ Letter
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Astrophysics
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