Astrofísicas: Estrellas enanas blancas

  • Publicación
    Planetary Accretion Is Less Frequent in Wide Binaries: Evidence from Metal-enriched White Dwarfs in DESI DR1
    Binary stars are common in the Galaxy, and understanding how stellar binarity influences the formation and evolution of planetary systems is an active area of...
  • Publicación
    Preliminary Target Selection for the DESI Milky Way Survey (MWS)
    The DESI Milky Way Survey (MWS) will observe ≥8 million stars between 16 < r < 19 mag, supplemented by observations of brighter targets under poor observing...
  • Publicación
    Radio Continuum Studies of Ultracompact and Short Orbital Period X-Ray Binaries
    We present the radio continuum counterparts to the enigmatic ultracompact X-ray binaries (UCXBs): a black hole or neutron star accreting from a hydrogen...
  • Publicación
    Red giant stragglers and He white dwarfs in galactic globulars
    The evolutionary scenario concerning the production and the cooling of He white dwarfs is revisited and discussed. We show that, for a given star metallicity...
  • Publicación
    Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq
    We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining Type Ia supernova (SN Ia) in NGC 1784 (D ≈ 31...
  • Publicación
    Supernova Ia Remnants with M-dwarf Surviving Companions
    We study the possibility that Type Ia supernovae might be produced by binary systems where the companion of the exploding white dwarf is an M-dwarf star. Such a...
  • Noticia
    TESS, Spitzer y GTC detectan el primer planeta orbitando una enana blanca
    Con datos del satélite TESS de la NASA, el retirado telescopio espacial Spitzer y el Gran Telescopio Canarias (GTC), un equipo internacional de astrónomos, en...
  • 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...