Astrofísicas: Galaxias enanas

  • Charla
    The Star Formation & Chemical Evolution timescales of two nearby dwarf spheroidal galaxies
    We present the detailed Star Formation History of the nearby Sculptor and Fornax dwarf spheroidal galaxies, from wide-field photometry of resolved stars, going...
  • Charla
    The star formation history of different types of dwarf galaxies
    We are going to present a new code to derive the SFH of a complex stellar population system, like a galaxy. This code has been used to obtain the SFH of six...
  • Publicación
    The Star Formation History of Eridanus II: On the Role of Supernova Feedback in the Quenching of Ultrafaint Dwarf Galaxies
    Eridanus II (Eri II) is an ultrafaint dwarf (UFD) galaxy (M V = -7.1) located at a distance close to the Milky Way virial radius. Early shallow color-magnitude...
  • Publicación
    The Stellar Distribution in Ultrafaint Dwarf Galaxies Suggests Deviations from the Collisionless Cold Dark Matter Paradigm
    Unraveling the nature of dark matter (DM) stands as a primary objective in modern physics. Here we present evidence suggesting deviations from the collisionless...
  • Publicación
    The Undiscovered Ultradiffuse Galaxies of the Local Group
    Ultradiffuse galaxies (UDGs) are attractive candidates to probe cosmological models and test theories of galaxy formation at low masses; however, they are...
  • Publicación
    Timing the r-process Enrichment of the Ultra-faint Dwarf Galaxy Reticulum II
    The ultra-faint dwarf galaxy Reticulum II (Ret II) exhibits a unique chemical evolution history, with ${72}_{-12}^{+10}$ % of its stars strongly enhanced in r...
  • Publicación
    Tripling the Census of Dwarf AGN Candidates Using DESI Early Data
    Using early data from the Dark Energy Spectroscopic Instrument (DESI) survey, we search for active galactic nuclei (AGN) signatures in 410,757 line-emitting...
  • 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 }_{...
  • Publicación
    Using color-magnitude diagrams and spectroscopy to derive star formation histories: VLT observations of Fornax
    We undertook a study of the star formation and chemical enrichment history of the Fornax dSph galaxy. We used the VLT with FORS1 to obtain photometry reaching...