A consistency test of white dwarf and main sequence ages: NGC 6791
; Althaus, Leandro Gabriel Otros responsables
Fecha
2013
Editorial
EDP Sciences
Revista
Título del libro
Nombre del evento
40th Liege International Astrophysical Colloquium
Fecha del evento
2012-07
Institución organizadora
Université de Liège
ISSN
eISSN
ISBN
978-2-7598-0969-1
Idioma
Inglés
Tipo del evento
Otro
Clasificación temática
Palabras clave
Resumen
NGC 6791 is an open cluster that it is so close to us that can be imaged down to very faintluminosities. The main sequence turn-off age (∼8 Gyr) and the age derived from the cut-off of the white dwarf luminosity function (∼6 Gyr) were found to be significantly different. Here we demonstrate that the origin of this age discrepancy lies in an incorrect evaluation of the white dwarf cooling ages, and we show that when the relevant physical separation processes are included in the calculation of white dwarf sequences both ages are coincident
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