Astrofísicas: Poblaciones estelares

  • Publicación
    Integral field spectroscopy on the WHT.
    2D-FIS, a bundle of 125 optical fibres mounted in the focal plane of the WHT, has been used to study two-dimensional stellar kinematics and populations in...
  • Charla
    Kinematics and stellar population gradients as fingerprints of past mergers in elliptical galaxies
    The formation and evolution of early-type galaxies constitutes a long-standing and crucial problem in cosmology. In all hierarchical clustering models within a...
  • Charla
    MILES: population synthesis for the 21st century
    We present the new stellar population synthesis models based on the empirical stellar spectral library MILES, which can be regarded nowadays as standard in the...
  • Charla
    Multiple Stellar Populations & Horizontal Branch Stars in Galactic Globular Clusters: firm evidence, (apparent) anomalies and current shortcomings
    Since the early 50' of last century the study of Horizontal Branch stars in Galactic GCs has been of pivotal relevance since the core He-burning stage is an...
  • Charla
    Multiple Stellar Populations in Galactic Globular Clusters: updated empirical evidence and the theoretical framework
    In recent years accurate photometric and spectroscopic observations have provided sound evidence that Galactic Globular Clusters can not be longer considered...
  • Publicación
    On the Dwarf Irregular Galaxy NGC 6822. I. Young, Intermediate, and Old Stellar Populations
    We present accurate and deep multiband (g, r, i) photometry of the Local Group dwarf irregular galaxy NGC 6822. The images were collected with wide-field...
  • Publicación
    On the occurrence of tidal tails in the Carina dSph
    Wide field B,V photometry of the outer regions of the Carina dwarf spheroidal galaxy is presented. Six fields were observed to a distance from the centre up to...
  • Charla
    Past and Present of Dwarf Galaxies in Clusters
    Dwarf galaxies are a complex population. They comprise objects with young and old stellar populations, slow and fast rotation, as well as single- and multi...
  • Publicación
    Recovering Age-Metallicity Distributions from Integrated Spectra: Validation with MUSE Data of a Nearby Nuclear Star Cluster
    Current instruments and spectral analysis programs are now able to decompose the integrated spectrum of a stellar system into distributions of ages and...