IALP   13078
INSTITUTO DE ASTROFISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Theoretical modeling of pulsating low-mass white dwarfs
Autor/es:
A. H. CÓRSICO; L. G. ALTHAUS
Lugar:
Montreal
Reunión:
Workshop; 19th European White Dwarf Workshop; 2014
Resumen:
Photometric variations in some low-mass white-dwarf stars have beenrecently detected (Hermes et al. 2012). Such variability is though to be due to longperiodnonradial pulsation g modes. Pulsating low-mass white dwarfs make up a new,separate class of pulsating white dwarfs with H rich atmospheres, low effective temperatures (Teff = 7800 − 10 000 K), and low gravities (log g = 6 − 6.8) (Hermes etal. 2013ab). Asteroseismology of these stars can provide valuable clues about theirinternal structure and evolutionary status, allowing us to place constraints on the binaryevolutionary processes involved in their formation. We present here the main results ofa detailed pulsational study applied to low-mass He-core white dwarfs, based on fullevolutionary models representative of these objects. The main aim of this work is toprovide a solid theoretical basis from which to interpret present and future observationsof variable low-mass white dwarfs.