Astrofísicas: Galaxias

  • Publicación
    The Role of Bars in AGN Fueling in Disk Galaxies Over the Last Seven Billion Years
    We present empirical constraints on the influence of stellar bars on the fueling of active galactic nuclei (AGNs) out to z = 0.84 using a sample of X-ray...
  • Publicación
    The Role of Bars on Bulge Formation: Stellar Line-Strength Indices of Bulges
    We have carried out a long term project to analyse the role played by bars in bulge formation and the formation and evolution of bars from the point of view of...
  • Publicación
    The Role of Evolutionary Age and Metallicity in the Formation of Classical Be Circumstellar Disks. II. Assessing the Evolutionary Nature of Candidate Disk Systems
    We present the first detailed imaging polarization observations of six SMC and six LMC clusters, known to have large populations of B-type stars that exhibit...
  • Publicación
    The role of grain size in active galactic nuclei torus dust models
    Context. Active galactic nuclei (AGN) are surrounded by dust within the central parsecs. The dusty circumnuclear structures, referred to as the torus, are...
  • Publicación
    The Role of Mergers in Galaxy Evolution
    In the last decade the importance of mergers in the evolution of galaxies has become evident. In this paper we illustrate this importance by showing examples of...
  • Publicación
    The role of stellar radial motions in shaping galaxy surface brightness profiles
    Aims: The physics driving features such as breaks observed in galaxy surface brightness (SB) profiles remains contentious. Here, we assess the importance of...
  • Publicación
    The Role of the Accretion Disk, Dust, and Jets in the IR Emission of Low-luminosity Active Galactic Nuclei
    We use recent high-resolution infrared (IR; 1-20 μm) photometry to examine the origin of the IR emission in low-luminosity active galactic nuclei (LLAGN). The...
  • Publicación
    The ROSAT International X-ray/Optical Survey (RIXOS): source catalogue
    We describe the ROSAT International X-ray/Optical Survey (RIXOS), a medium-sensitivity survey and optical identification of X-ray sources discovered in ROSAT...
  • Publicación
    The ROSAT UK medium sensitivity survey.
    The authors present the first results on the optical identification of 89 ROSAT sources on the second Lockman hole. Because of the low Galactic H I column...