Astrofísicas: Estrellas enanas blancas

  • Publicación
    The early nucleosynthesis of O and Fe
    The new observational O/Fe vs Fe/H relationship in halo dwarfs is analyzed in terms of a model of chemical evolution for the solar neighborhood. The role of...
  • Publicación
    The Mass and Age Distribution of Halo White Dwarfs in the Canada-France Imaging Survey
    We present optical spectroscopy for 18 halo white dwarfs identified using photometry from the Canada-France Imaging Survey and Pan-STARRS1 DR1 3π survey...
  • Publicación
    The Pre-He White Dwarf in the Post-mass Transfer Binary EL CVn
    EL CVn is the prototype of a class of eclipsing binaries that consist of an A- or F-type main-sequence star and a hot, low-mass, pre-He white dwarf (pre-He WD)...
  • Publicación
    The pulsating DA white dwarf PG2303+243 revisited
    An analysis of about 27 h of fast photometry of the cool ZZ Ceti white dwarf PG2303+243 reveals (1) the presence of many modes (as many as 22), some of them of...
  • Publicación
    Time resolved spectroscopy of AM CVn
    The preliminary results of time-resolved spectroscopy of the He White Dwarf system AM CVn are presented. Spectral variations at different photometric periods...
  • Publicación
    White Dwarf Binaries across the H-R Diagram
    We created the APOGEE-GALEX-Gaia catalog to study white dwarf (WD) binaries. This database aims to create a minimally biased sample of WD binary systems...
  • Publicación
    White Dwarfs in Close Binaries: A Systematic Search for Mass-transfer Systems and Supernova Ia Progenitors in the APOGEE Survey
    We have created a new and unique database, the APOGEE-Galaxy Evolution Explorer (GALEX)-Gaia catalog, to study white dwarfs in close binaries, and, in...