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An independent limit on the axion mass from the variable white dwarf star R548
Alejandro H. Córsico, Leandro G. Althaus, Alejandra D. Romero +5
Pulsating white dwarfs with hydrogen-rich atmospheres, also known as DAV stars, can be used as astrophysical laboratories to constrain the properties of fundamental particles like…
The seismic properties of low-mass He-core white dwarf stars
A. H. Córsico, A. D. Romero, L. G. Althaus +1
We present here a detailed pulsational study applied to low-mass He-core white dwarfs, based on full evolutionary models representative of these objects. The background stellar mod…
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…