Now showing items 1-5 of 5

  • New chemical profiles for the asteroseismolofy of ZZ Ceti stars 

    Althaus, Leandro Gabriel; Córsico, Alejandro Hugo; Bischoff-Kim, A.; Romero, A.D.; Renedo Rouco, Isabel; García-Berro Montilla, Enrique; Miller Bertolami, Marcelo M (2010-07-10)
    Article
    Open Access
    We compute new chemical profiles for the core and envelope of white dwarfs appropriate for pulsational studies of ZZ Ceti stars. These profiles are extracted from the complete evolution of progenitor stars, evolved through ...
  • New cooling sequences for old white dwarfs 

    Renedo Rouco, Isabel; Althaus, Leandro Gabriel; Miller Bertolami, Marcelo M; Romero, A.D.; Córsico, Alejandro Hugo; Rohrmann, Rene Daniel; García-Berro Montilla, Enrique (2010-07)
    Article
    Restricted access - publisher's policy
    We present full evolutionary calculations appropriate for the study of hydrogen-rich DA white dwarfs. This is done by evolving white dwarf progenitors from the zero-age main sequence, through the core hydrogen-burning phase, ...
  • Revisiting the theoretical DBV (V777 Her) instability strip: The MLT theory of convection 

    Córsico, Alejandro Hugo; Althaus, Leandro Gabriel; Miller Bertolami, Marcelo M; García-Berro Montilla, Enrique (2009-06-01)
    Article
    Restricted access - publisher's policy
    We reexamine the theoretical instability domain of pulsating DB white dwarfs (DBV or V777 Her variables). We performed an extensive g-mode nonadiabatic pulsation analysis of DB evolutionary models considering a wide range ...
  • Seismological constraints on the high-gravity DOV stars PG 2131+066 and PG 1707+427 

    Córsico, Alejandro Hugo; Althaus, Leandro Gabriel; Miller Bertolami, Marcelo M; García-Berro Montilla, Enrique (2009-06-01)
    Article
    Restricted access - publisher's policy
    A seismological study of the pulsating PG1159 stars PG2131+066 and PG 1707+427 is presented. We perform extensive adiabatic computations of g-mode pulsation periods of PG1159 evolutionary models with stellar masses ranging ...
  • The white dwarf cooling sequence of NGC 6791: an unique tool for stellar astrophysics 

    García-Berro Montilla, Enrique; Torres Gil, Santiago; Renedo Rouco, Isabel; Camacho Díaz, Judit; Althaus, Leandro Gabriel; Córsico, Alejandro Hugo; Salaris, Maurizio; Isern Vilaboy, Jordi (2011)
    Article
    Open Access
    Context. NGC 6791 is a well-studied, metal-rich open cluster that is so close to us that it can be imaged down to luminosities fainter than that of the termination of its white-dwarf cooling sequence, thus allowing for ...