Astrophysical: Galaxies

  • Publication
    The SAURON Project - XIV. No escape from Vesc: a global and local parameter in early-type galaxy evolution
    We present the results of an investigation of the local escape velocity (Vesc) - line strength index relationship for 48 early-type galaxies from the SAURON...
  • Publication
    The SAURON project - XIX. Optical and near-infrared scaling relations of nearby elliptical, lenticular and Sa galaxies
    We present ground-based MDM Observatory V-band and Spitzer/InfraRed Array Camera 3.6-?m-band photometric observations of the 72 representative galaxies of the...
  • Publication
    The SAURON project - XV. Modes of star formation in early-type galaxies and the evolution of the red sequence
    We combine SAURON integral field data of a representative sample of local early-type, red sequence galaxies with Spitzer/Infrared Array Camera imaging in order...
  • Publication
    The SAURON project - XVI. On the sources of ionization for the gas in elliptical and lenticular galaxies
    Following our study on the incidence, morphology and kinematics of the ionized gas in early-type galaxies, we now address the question of what is powering the...
  • Publication
    The SAURON project - XVII. Stellar population analysis of the absorption line strength maps of 48 early-type galaxies
    We present a stellar population analysis of the absorption line strength maps for 48 early-type galaxies from the SAURON sample. Using the line strength index...
  • Publication
    The SAURON project - XVIII. The integrated UV-line-strength relations of early-type galaxies
    Using far-ultraviolet (FUV) and near-ultraviolet (NUV) photometry from guest investigator programmes on the Galaxy Evolution Explorer (GALEX) satellite, optical...
  • Publication
    The SAURON project - XX. The Spitzer [3.6] - [4.5] colour in early-type galaxies: colours, colour gradients and inverted scaling relations
    We investigate the [3.6]-[4.5] Spitzer-IRAC colour behaviour of the early-type galaxies of the SAURON survey, a representative sample of 48 nearby ellipticals...
  • Publication
    The SAURON project - XXI. The spatially resolved UV-line strength relations of early-type galaxies
    The unexpected rising flux of early-type galaxies at decreasing ultraviolet (UV) wavelengths is a long-standing mystery. One important observational constraint...
  • Publication
    The scaling of X-ray variability with luminosity in ultra-luminous X-ray sources
    Aims: We investigate the relationship between the X-ray variability amplitude and X-ray luminosity for a sample of 14 bright ultra-luminous X-ray sources (ULXs)...