IALP   13078
INSTITUTO DE ASTROFISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
White dwarf models for low metallicity populations
Autor/es:
ALTHAUS, L. G.; CAMISASSA, M. E.; MILLER BERTOLAMI, M. M.
Lugar:
Montreal
Reunión:
Workshop; European White Dwarf Workshop; 2014
Resumen:
We present new white dwarf evolutionary sequences for low-metallicity progenitors. This study was motivated by the recent finding that residual H burning in low-mass white dwarfs resulting from Z = 0.0001 progenitors is the main energy source over most of their evolution. White dwarf sequences have been derived from full evolutionary calculations that take into account the history of progenitor stars, including the evolution during the whole thermally-pulsing asymptotic giant branch stage. Four different metallicities have been considered: Z=0.001, Z=0.0005, Z=0.0001 and Z=0.00003. Progenitor masses range from 0.8 M_sun to 2.5 M_sun. Our study shows that for progenitor metallicities in the range 00003