Astrophysical: Galaxies

  • Publication
    Composite bulges: the coexistence of classical bulges and discy pseudo-bulges in S0 and spiral galaxies
    We present an analysis of nine S0-Sb galaxies which have (photometric) bulges consisting of two distinct components. The outer component is a flattened...
  • Publication
    Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity
    We present analytic formulae that approximate the evolution of stars for a wide range of mass M and metallicity Z. Stellar luminosity, radius and core mass are...
  • Publication
    Conditions for Reionizing the Universe with a Low Galaxy Ionizing Photon Escape Fraction
    We explore scenarios for reionizing the intergalactic medium with low galaxy ionizing photon escape fractions. We combine simulation-based halo mass–dependent...
  • Publication
    Confidence levels of evolutionary synthesis models
    The stochastic nature of the IMF in young stellar clusters implies that clusters of the same mass and age do not present the same unique values of their...
  • Publication
    Confidence levels of evolutionary synthesis models. II. On sampling and Poissonian fluctuations
    In terms of statistical fluctuations, stellar population synthesis models are only asymptotically correct in the limit of a large number of stars, where...
  • Publication
    Confidence Limits of Evolutionary Synthesis Models
    The probabilistic nature of the IMF in stellar systems implies that clusters of the same mass and age do not present the same unique values of their observed...
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    Confidence limits of evolutionary synthesis models. III. On time-integrated quantities
    Evolutionary synthesis models are a fundamental tool to interpret the properties of observed stellar systems. In order to achieve a meaningful comparison...
  • Publication
    Confidence Limits of SN, Kinetic Energy and Chemical Yields in Evolutionary Synthesis Models
    When evolutionary synthesis models take into account the stochastic nature of the IMF together with the discrete number of stars in real stellar clusters...
  • Publication
    Confirmation of a Kinematic Diagnostic for Face-On Box/Peanut-shaped Bulges
    We present the results of high-resolution absorption-line spectroscopy of three face-on galaxies, NGC 98, NGC 600, and NGC 1703, with the aim of searching for...