Astrofísicas: Galaxias

  • Publicación
    The Mass Profile and Shape of Bars in the Spitzer Survey of Stellar Structure in Galaxies (S4G): Search for an Age Indicator for Bars
    We have measured the radial light profiles and global shapes of bars using two-dimensional 3.6 μm image decompositions for 144 face-on barred galaxies from the...
  • Publicación
    The Massive Progenitor of the Possible Type II-Linear Supernova 2009hd in Messier 66
    We present early- and late-time photometric and spectroscopic observations of supernova (SN) 2009hd in the nearby spiral galaxy NGC 3627 (M66). This SN is one...
  • Publicación
    The massive relic galaxy NGC 1277 is dark matter deficient. From dynamical models of integral-field stellar kinematics out to five effective radii
    According to the Λ cold dark matter (ΛCDM) cosmology, present-day galaxies with stellar masses M ⋆ > 10 11 M ⊙ should contain a sizable fraction of dark matter...
  • Publicación
    The maximum stellar mass, star-cluster formation and composite stellar populations
    We demonstrate that the mass of the most massive star in a cluster correlates non-trivially with the cluster mass. A simple algorithm, according to which a...
  • Publicación
    The mean star formation rate of X-ray selected active galaxies and its evolution from z ~ 2.5: results from PEP-Herschel
    We study relationships between star-formation rate (SFR) and the accretion luminosity and nuclear obscuration of X-ray selected active galactic nuclei (AGNs)...
  • Publicación
    The merger history of massive spheroids since z ˜ 1 is size-independent
    Using a compilation of 379 massive (stellar mass M ≳ 1011 M⊙) spheroid-like galaxies from the near-infrared Palomar/DEEP-2 survey, we investigated, up to z ˜ 1...
  • Publicación
    The merging/AGN connection. II. Ionization of the circumnuclear regions
    We report the first results of a study of a sample of 20 galaxy mergers/interacting systems, using the VIMOS and PMAS integral field spectrographs. For each...
  • Publicación
    The merging/AGN connection: a case for 3D spectroscopy
    We discuss an ongoing study of the connection between galaxy merging/interaction and AGN activity, based on integral field spectroscopy. We focus on the search...
  • Publicación
    The Metallicity Distribution of Intracluster Stars in Virgo
    We have used the Hubble Space Telescope's Advanced Camera for Surveys (ACS) to detect and measure ~5300 stars in a single intracluster field in the Virgo...