Astrofísicas: Galaxias

  • Publicación
    VLT diffraction-limited imaging at 11 and 18μm of the nearest active galactic nuclei
    Mid-infrared (mid-IR) imaging at resolutions of 300mas of the central kpc region of 13 nearby, well-known active galaxies is presented. The bulk of the mid-IR...
  • Publicación
    VLT FORS2 optical imaging and spectroscopy of nine luminous type 2 AGN at 0.3 < z < 0.6 - I. Ionized gas nebulae
    We present optical imaging and long slit spectroscopic observations of nine luminous type 2 active galactic nuclei (AGN) within the redshift range 0.3 z 0.6...
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    VLT Spectroscopy of RR Lyrae Stars in the Sagittarius Tidal Stream
    Sixteen RR Lyrae variables from the QUEST survey that lie in the leading arm of the tidal stream from the Sagittarius dSph galaxy have been observed...
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    VLT-VIMOS integral field spectroscopy of luminous and ultraluminous infrared galaxies. I. The sample and first results
    Context: (Ultra)Luminous Infrared Galaxies [(U)LIRGs] are much more numerous at cosmological distances than locally, and are likely the precursors of elliptical...
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    VLT-VIMOS integral field spectroscopy of luminous and ultraluminous infrared galaxies. II. Evidence for shock ionization caused by tidal forces in the extra-nuclear regions of interacting and merging LIRGs
    Context. Luminous infrared galaxies (LIRGs) are an important class of objects in the low-z universe bridging the gap between normal spirals and the strongly...
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    VLT-VIMOS integral field spectroscopy of luminous and ultraluminous infrared galaxies. III. The atlas of the stellar and ionized gas distribution
    Context. Luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) are much more numerous at higher redshifts than locally, dominating the star-formation...
  • Publicación
    VLT/FLAMES high-resolution chemical abundances in Sculptor: a textbook dwarf spheroidal galaxy
    We present detailed chemical abundances for 99 red-giant branch stars in the centre of the Sculptor dwarf spheroidal galaxy, which have been obtained from high...
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    VLT/FLAMES spectroscopy of red giant branch stars in the Fornax dwarf spheroidal galaxy
    Context. Fornax is one of the most massive dwarf spheroidal galaxies in the Local Group. The Fornax field star population is dominated by intermediate age stars...
  • Publicación
    VLT/FORS1 spectrophotometry of the first planetary nebula discovered in the Phoenix dwarf galaxy
    Context: A planetary nebula (PN) candidate was discovered during FORS imaging of the Local Group dwarf galaxy Phoenix. Aims: We use this PN to complement...