Astrofísicas: Cúmulos de estrellas

  • Publicación
    New cluster candidates in dwarf galaxies of the Local Group
    V and I images of the nearby dIrr galaxies Sextans A and Sextans B were searched for the clusters. The cadidates were selected, from a sample of non-stellar...
  • Publicación
    New constraints on the central mass contents of Omega Centauri from combined stellar kinematics and pulsar timing
    Aims. We performed a combined analysis of stellar kinematics with line-of-sight accelerations of millisecond pulsars (MSPs) to probe the mass content of Omega...
  • Publicación
    Nitrogen abundances of the Be-type stars in 30 Doradus
    A sub-set of the 67 Be-type stars observed in 30 Doradus during the VLT-FLAMES Tarantula Survey (VFTS) campaign have been analysed to estimate atmospheric...
  • Publicación
    Nuclear star formation in the hotspot galaxy NGC 2903
    We present high-resolution near-infrared imaging obtained using adaptive optics and HST/NICMOS, and ground-based spectroscopy of the hotspot galaxy NGC 2903...
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    On ageing star clusters using red supergiants independent of the fraction of interacting binary stars
    We use the Binary Population and Spectral Synthesis models to test the recent suggestion that red supergiants can provide an accurate age estimate of a coeval...
  • Publicación
    On biases in the predictions of stellar population synthesis models
    Sampling fluctuations in stellar populations give rise to dispersion in observables when a small number of sources contribute effectively to the observables...
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    On emission-line spectra obtained from evolutionary synthesis models. I. Dispersion in the ionising flux and Lowest Luminosity Limits
    Stellar clusters with the same general physical properties (e.g., total mass, age, and star-formation mode) may have very different stellar mass spectra due to...
  • Publicación
    On emission-line spectra obtained from evolutionary synthesis models. II. Scale-relations and the estimation of mass dependences
    Aims: In this paper we study the influence of the ionizing cluster mass on the emission line spectrum of H ii regions in order to determine the influence of low...
  • Publicación
    On surface brightness fluctuations: probabilistic and statistical bases. I. Stellar population and theoretical surface brightness fluctuations
    Aims: This work aims to provide a theoretical formulation of surface brightness fluctuations (SBF) in the framework of probabilistic population synthesis models...