Astrophysical: Galaxies

  • 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...
  • Publication
    Is the X-Ray Spectrum of the Seyfert 2 Galaxy NGC 5252 Intrinsically Flat?
    The first X-ray observation of the Seyfert 2 galaxy NGC 5252 is reported. ASCA Astro-D collected approximately 4000 photons per detector, enough to perform an...
  • Publication
    ISOCAM observations in the Lockman Hole. I. The 14.3 μm shallow survey: Data reduction, catalogue, and optical identifications
    We present the image and catalogue of the 14.3 μ shallow survey of 0.55 square degrees in the region of the Lockman Hole (10^h52^m03^s +57°21'46'', J2000) with...
  • Publication
    Isolated galaxies in the Local Group .
    Dwarf galaxies in the Local Group allow to study in great detail the physical mechanisms responsible for the formation and evolution of galaxies. In fact, their...