Astrophysical: Galaxies

  • Publication
    Ionized outflows in luminous type 2 AGNs at z < 0.6: no evidence for significant impact on the host galaxies
    We investigate the presence of extended ionized outflows in 18 luminous type 2 AGNs (11 quasars and 7 high-luminosity Seyfert 2s) at 0.3 z 0.6 based on VLT...
  • Publication
    Ionizing the Diffuse Interstellar Medium in Late-type Galaxies
    We show how the clumpy structure of the interstellar medium (ISM) both inside HII regions and in the diffuse component, permits the propagation of ionizing...
  • Publication
    ion{H}{i} study of the warped spiral galaxy NGC 5055: a disk/dark matter halo offset?
    We present a study of the ion{H}{i} distribution and dynamics of the nearby spiral galaxy NGC 5055 based on observations with the Westerbork Synthesis Radio...
  • Publication
    IRAC Mid-Infrared Imaging of the Hubble Deep Field-South: Star Formation Histories and Stellar Masses of Red Galaxies at z>2
    We present deep 3.6-8 μm imaging of the Hubble Deep Field-South with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We study distant red...
  • Publication
    IRAM 30-m-EMIR redshift search of z = 3─4 lensed dusty starbursts selected from the HerBS sample
    Using the Eight MIxer Receiver (EMIR) instrument on the Institut de RadioAstronomie Millimétrique (IRAM) 30-m telescope, we conducted a spectroscopic redshift...
  • Publication
    Iron Depletion in Ionized Nebulae of the Large Magellanic Cloud
    We present here preliminary results of an analysis of the iron abundance in the ionized gas of three planetary nebulae and one H II region of the Large...
  • Publication
    Is HCG 31 undergoing a merger or a fly-by interaction?
    We present Fabry-Perot and multi-object spectroscopy of the galaxies in Hickson compact group 31 (HCG 31). Based upon our Hα data cubes, galaxies A and C are a...
  • Publication
    Is the Bremer Deep Field reionized, at z ∼ 7?
    We show herein that the population of star-forming galaxies in the Bremer Deep Field (BDF) has enough ionizing power to form two large ionized bubbles that...
  • Publication
    Is the initial mass function of low surface brightness galaxies dominated by low-mass stars?
    The rotation curves of low surface brightness (LSB) galaxies suggest that they possess significantly higher mass-to-light (M/L) ratios than their high surface...