NGC 6791 is an open cluster that it is so close to us that can be imaged down to very faint luminosities. 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.
Información general
Fecha de publicación:2013
Idioma del documento:Inglés
Revista:EPJ Web of Conferences; vol. 43
Evento:40th Liege International Astrophysical Colloquium. Ageing Low Mass Stars: From Red Giants to White Dwarfs (Liège, Belgium, July 9-13, 2012)
Institución de origen:Facultad de Ciencias Astronómicas y Geofísicas
Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)