Astrofísicas: Estrellas binarias

  • Publicación
    The active phase of the symbiotic star BF Cygni
    The activity phase of BF Cygni discovered in May 1989 and which lasted about two years is examined. The UV emission lines, usually strong during quiescence...
  • Publicación
    The Central Star of NGC 2346 as a Clue to Binary Evolution through the Common Envelope Phase
    We present an analysis of the binary central star of the planetary nebula NGC 2346 based on archival data from the International Ultraviolet Explorer, and new...
  • Publicación
    The contribution to population in ellipticals of blue stragglers - A test of their origin
    An observational test of the binary hypothesis for the origin of the blue straggler (BS) stars has been performed searching for radial velocity variables among...
  • Publicación
    The Mass of the Neutron Star in CYG X-2 (V1341 CYG)
    Cygnus X-2 is one of the brightest and longest known X-ray sources. We present high resolution optical spectroscopy of Cyg X-2 obtained over 4 years which gives...
  • Publicación
    The peculiar nature of BD + 24 deg 676
    The H-alpha emission star BD + 24 deg 676, formerly classified as a T Tauri star and more recently as a Herbig Ae star, has been observed at moderately high...
  • Publicación
    The System Parameters of the Polars MR SER and ST LMi
    We obtain the Na I lambda 8183,8195 absorption line radial velocity curves for the polars ST LMi and MR Ser, from which we find the semi-amplitudes to be Kabs...
  • Publicación
    The VLT-FLAMES Tarantula Survey
    The Tarantula survey is an ESO Large Programme which has obtained multi-epochs spectroscopy of over 800 massive stars in the 30 Dor region in the Large...
  • Noticia
    Un estudio revela cómo las estrellas binarias cambian su danza estelar con la edad
    Una investigación liderada por el Instituto de Astrofísica de Canarias (IAC) ha descubierto que, en sistemas binarios, las estrellas que evolucionan en gigante...
  • Publicación
    Unraveling the Complexity of Dwarf Galaxy Dynamics: A Study of Binary Orbital Motions
    We investigate the impact of binary orbital motions on the dynamical modeling of dwarf galaxies with intrinsic line-of-sight velocity dispersions ( ${\sigma }_{...