Astrophysical: Galaxies

  • Publication
    The XMM-Newton serendipitous survey. IV. Optical identification of the XMM-Newton medium sensitivity survey (XMS)
    Aims:X-ray sources at intermediate fluxes (a few × 10-14 erg cm-2 s-1) with a sky density of ~100 deg-2 are responsible for a significant fraction of the cosmic...
  • Publication
    The XMM-Newton Survey Science Centre Medium Sensitivity Survey
    We present preliminary results on the XMM-Newton Survey Science Centre medium sensitivity survey, with 0.5-4.5 keV flux limit 2x 10-14 erg cm-2 s-1. At present...
  • Publication
    The XMM-Newton Wide Angle Survey (XWAS)
    Aims: This programme is aimed at obtaining one of the largest X-ray selected samples of identified active galactic nuclei to date in order to characterise such...
  • Publication
    The XMM-Newton/HST View of the Obscuring Outflow in the Seyfert Galaxy Mrk 335 Observed at Extremely Low X-Ray Flux
    The Seyfert galaxy Mrk 335 is known for its frequent changes of flux and spectral shape in the X-ray band that occurred during recent years. These variations...
  • Publication
    The young stellar population of IC 1613. I. A new catalogue of OB associations
    Context: Determining the parameters of massive stars is crucial to understand many processes in galaxies and the Universe, since these objects are important...
  • Publication
    The young stellar population of IC 1613. II. Physical properties of OB associations
    Context. To understand the structure and evolution of massive stars, systematic surveys of the Local Group galaxies have been undertaken, to find these objects...
  • Publication
    The young stellar population of IC 1613. III. New O-type stars unveiled by GTC-OSIRIS
    Context. Very low-metallicity massive stars are key to understanding the reionization epoch. Radiation-driven winds, chief agents in the evolution of massive...
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    The z = 0.8 precursors of today's bulges
    We study the color structure of disk galaxies in the Groth strip at redshifts 0.1 z 1.2. Our aim is to test formation models in which bulges form before/after...
  • Publication
    The z=0.558 absorption system towards PKS 0118-272: A candidate Damped LY α system at low redshift.
    We present a study of the MgII absorption system at z=0.558 towards the BL Lac object PKS 0118-272 based on high resolution spectra (λ/{DELTA}λ=~2x10^4^)...