Astrophysical: Galaxies

  • Publication
    On the relation between the IR continuum and the active galactic nucleus in Seyfert galaxies
    A sample of the brightest known Seyfert galaxies from the CfA sample is analyzed on the basis of ISO photometric and spectroscopic data. Regardless of the...
  • Publication
    On the relation between the Schmidt and Kennicutt-Schmidt star formation laws and its implications for numerical simulations
    When averaged over large scales, star formation in galaxies is observed to follow the empirical Kennicutt-Schmidt (KS) law for surface densities above a...
  • Publication
    On the Reliability of Microvariability Tests in Quasars
    Microvariations probe the physics and internal structure of quasars. Unpredictability and small flux variations make this phenomenon elusive and difficult to...
  • Publication
    On the self-consistency of evolutionary synthesis models
    Evolutionary synthesis models have been used to study the physical properties of unresolved populations in a wide range of scenarios. Unfortunately, their self...
  • Publication
    On the shape and evolution of a cosmic-ray-regulated galaxy-wide stellar initial mass function
    In this paper, we present a new derivation of the shape and evolution of the integrated galaxy-wide initial mass function (IGIMF), incorporating explicitly the...
  • Publication
    On the Size and Luminosity versus Velocity Dispersion Correlations from the Giant H II Regions in the Irregular Galaxy NGC 4449
    Here we present the size and luminosity versus velocity dispersion empirical correlations for the giant H II regions in the large irregular galaxy NGC 4449. We...
  • Publication
    On the Spectroscopic Properties of Star-Forming Dwarf Galaxies in Different Environments
    A study is presented on the spectroscopic properties of a sample of star- forming dwarf galaxies in extreme density environments, as part of an ongoing project...
  • Publication
    On the Star Formation Efficiencies and Evolution of Multiple Stellar Generations in Globular Clusters
    By adopting empirical estimates of the helium enhancement (ΔY) between consecutive stellar generations for a sample of Galactic globular clusters (GGCs), we...
  • Publication
    On the Stellar Content of the Starburst Galaxy IC10
    We investigate the stellar content of the starburst dwarf galaxy IC10 using accurate and deep optical data collected with the Advanced Camera for Surveys and...