Astrophysical: Galaxies

  • Publication
    H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results
    This paper presents the distribution of ionized gas in the disk and circumnuclear region of a sample of 55 galaxies with active nuclei, Seyfert galaxies of type...
  • Publication
    H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. II. Luminosity Function, Size, and Radial Distributions
    This paper presents the second part of an extensive study of the properties of the H II region population in a sample of spiral galaxies with active nucleus...
  • Publication
    H II Regions Within a Compact High Velocity Cloud. A Nearly Starless Dwarf Galaxy?
    Within the SECCO survey we identified a candidate stellar counterpart to the Ultra Compact High Velocity Cloud (UCHVC) HVC274.68+74.70-123 that was suggested by...
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    H α morphologies of star clusters: a LEGUS study of H II region evolution time-scales and stochasticity in low-mass clusters
    The morphology of H II regions around young star clusters provides insight into the time-scales and physical processes that clear a cluster's natal gas. We...
  • Publication
    H-ATLAS: a candidate high redshift cluster/protocluster of star-forming galaxies
    We investigate the region around the Planck-detected z = 3.26 gravitationally lensed galaxy HATLAS J114637.9-001132 (hereinafter HATLAS12-00) using both...
  • Publication
    H.E.S.S. and MAGIC observations of a sudden cessation of a very-high-energy γ-ray flare in PKS 1510‒089 in May 2016
    The flat spectrum radio quasar (FSRQ) PKS 1510‒089 is known for its complex multiwavelength behaviour and it is one of only a few FSRQs detected in very-high...
  • Publication
    H1517+656: The Birth of a BL Lacertae Object?
    H1517+656 is an unusual source, even for a BL Lac object. It is one of the most luminous BL Lac objects known, with extreme emission properties at radio...
  • Publication
    Halo concentrations in the standard Λ cold dark matter cosmology
    We study the concentration of dark matter haloes and its evolution in N-body simulations of the standard Λ cold dark matter (ΛCDM) cosmology. The results...
  • Publication
    Halo-Disk vs. Shrinking Scenarios
    We discuss the possibility that the extended structures, lacking young stars, routinely found in dwarf irregular galaxies (dIrr) are a consequence of a...