Astrofísicas: Grupo local

  • Noticia
    Las galaxias satélite podrían seguir formando estrellas cuando pasan cerca de las galaxias anfitrionas
    Históricamente los científicos han creído que una vez que las galaxias satélite pasan cerca de la galaxia anfitriona, de mayor masa, su formación estelar se...
  • Publicación
    Looking for the traces of the early Universe in the Fornax dSph galaxy
    We present the full Star Formation History as a function of radius of the Fornax dSph galaxy. We also present the preliminary results of the spatial...
  • Publicación
    Luminous Blue Variables in the local universe
    Preliminary results of a candidate luminous blue variable (LBV) search made in a region of M33 are presented. The objects were found with narrow band filter...
  • Publicación
    Luminous Red Stars in Local Group Dwarf Elliptical Galaxies: an Intermediate-Age Population?
    In this Letter, we show that the optically bright stars above the tip of the first red giant branch (TRGB) in the color-magnitude diagrams (CMDs) of nearby...
  • Publicación
    Mass-metallicity relation of dwarf galaxies and its dependency on time: clues from resolved systems and comparison with massive galaxies
    Aims: We present a new approach to study the mass-metallicity relation and its dependency on time. Methods: We used the star formation history (SFH) derived...
  • Publicación
    Massive OB stars at varying Z
    Massive stars play a key role in environments with very different metallicities. To interpret the role of massive stars in these systems we have to know their...
  • Publicación
    Merger traces in the spatial distribution of stellar populations in the Fornax dSph galaxy
    We present a comprehensive and detailed study of the stellar populations of the Fornax dwarf spheroidal galaxy. We analyse their spatial distributions along the...
  • Publicación
    Microlensing toward Crowded Fields: Theory and Applications to M31
    We present a comprehensive treatment of the pixel-lensing theory and apply it to lensing experiments and their results toward M31. Using distribution functions...
  • Publicación
    Model Color-Magnitude Diagrams for Hubble Space Telescope Observations of Local Group Dwarf Galaxies
    In this Letter, we discuss a method to conduct a quantitative study of the star formation history (SFH) of Local Group (LG) galaxies using Hubble Space...