Pulsational instability of high-luminosity H-rich pre-white dwarf stars

LEILA M. CALCAFERRO; ALEJANDRO H. CÓRSICO; MARÍA E. CAMISASSA; LEANDRO G. ALTHAUS; SHIBAHASHI, HIROMOTO

San Pedro de Atacama

Conferencia; Wide-Field Variability Surveys: A 21st Century Perspective "22nd Los Alamos Stellar Pulsation" Conference Series Meeting; 2016

Pontificia Universidad Católica de Chile

We present a pulsational stability analysis on high-luminosity H-rich (DA) white dwarf models evolved from low-metallicity progenitors. We found that the ε mechanism due to H-shell burning is able to excite low-order g modes.