Astrofísicas: Galaxias

  • Publicación
    XMM-Newton observations of the Lockman Hole. III. A relativistic Fe line in the mean X-ray spectra of type-1 and type-2 AGN
    Using the 770 ks XMM-Newton survey of the Lockman Hole field in combination with extensive optical identifications of the AGN population, we derive an average...
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    XMM-Newton study of six massive, X-ray luminous galaxy cluster systems in the redshift range z = 0.25-0.5
    Massive galaxy clusters are interesting astrophysical and cosmological objects to study, but they are relatively rare. In the redshift range z = 0.25-0.5 which...
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    XMM-Newton-discovered Fast X-ray Transients: host galaxies and limits on contemporaneous detections of optical counterparts
    Extragalactic fast X-ray transients (FXTs) are a class of soft (0.3-10 keV) X-ray transients lasting a few hundred seconds to several hours. Several progenitor...
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    XMMU J134736.6+173403: an eclipsing LMXB in quiescence or a peculiar AGN?
    Aims:We report the discovery of a peculiar object observed serendipitously with XMM-Newton. We present its timing and spectral properties and investigate its...
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    XSL, the X-Shooter Spectral Library: Overview and status
    We present an overview of and status report on XSL, the X-Shooter Spectral Library. XSL is an ESO Large Programme that is using the X-Shooter three-beam...
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    Young ages and other intriguing properties of massive compact galaxies in the local Universe
    We characterize the kinematics, morphology, stellar populations and star formation histories of a sample of massive compact galaxies in the nearby Universe...
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    Young and very young stars in NGC 3372, the Carina Nebula
    The advantages of using a telescope of large aperture, like the GTC, for mid-infrared imaging are demonstrated. Examples are given to compare the...
  • Publicación
    Young Galaxy Candidates in the Hubble Frontier Fields. III. MACS J0717.5+3745
    In this paper we present the results of our search for and study of z≳ 6 galaxy candidates behind the third Frontier Fields (FFs) cluster, MACS J0717.5+3745...
  • Publicación
    Young LMC clusters: the role of red supergiants and multiple stellar populations in their integrated light and CMDs
    The optical integrated spectra of three Large Magellanic Cloud young stellar clusters (NGC 1984, NGC 1994 and NGC 2011) exhibit concave continua and prominent...