The Puzzling White Dwarf Cooling Sequence in NGC 6791: A Simple Solution

Bibcode
2008ApJ...679L..29B
DOI
10.1086/589151
Bedin, L. R.; Salaris, M.; Piotto, G.; Cassisi, S.; Milone, A. P.; Anderson, J.; King, I. R.
Referencia bibliográfica

The Astrophysical Journal, Volume 679, Issue 1, pp. L29-L32.

Fecha de publicación:
5
2008
Revista
The Astrophysical Journal
Número de autores
7
Número de autores del IAC
0
Número de citas
65
Número de citas referidas
56
Descripción
In this Letter we demonstrate that the puzzling bright peak in the luminosity function of the white dwarf (WD) cooling sequence of NGC 6791 can be naturally accounted for if ~34% of the observed WDs are WD+WD binary systems. Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS 5-26555.
Tipo
Con árbitro

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