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Pulsations driven by the -mechanism in post-merger remnants: first results
Marcelo M. Miller Bertolami, Alejandro H. Córsico, Xianfei Zhang +2
Helium-rich subdwarfs are a rare subclass of hot subdwarf stars which constitute a small and inhomogeneous group showing varying degrees of helium enrichment. Only one star, LS IV…
Outer boundary conditions for evolving cool white dwarfs
R. D. Rohrmann, L. G. Althaus, E. García-Berro +2
White dwarf evolution is essentially a gravothermal cooling process, which,for cool white dwarfs, sensitively depends on the treatment of the outer boundary conditions. We provide…
The rate of cooling of the pulsating white dwarf star G117B15A: a new asteroseismological inference of the axion mass
Alejandro H. Córsico, Leandro G. Althaus, Marcelo M. Miller Bertolami +4
We employ a state-of-the-art asteroseismological model of G117-B15A, the archetype of the H-rich atmosphere (DA) white dwarf pulsators (also known as DAV or ZZ Ceti variables), and…
A public database for white dwarf asteroseismology with fully evolutionary models: I. Chemical profiles and pulsation periods of ZZ Ceti (DAV) stars
Alejandra D. Romero, Alejandro H. Córsico, Leandro G. Althaus +1
We present a large bank of chemical profiles and pulsation periods suited for asteroseismological studies of ZZ Ceti (or DAV) variable stars. Our background equilibrium DA white dw…