Astrofísicas: Galaxias

  • Publicación
    Rotational velocities of single and binary O-type stars in the Tarantula Nebula
    Rotation is a key parameter in the evolution of massive stars, affecting their evolution, chemical yields, ionizing photon budget, and final fate. We determined...
  • Publicación
    RX J105453.3+552102 cluster SDSS photometry (Aguerri+, 2011)
    Optical imaging of RX J105453.3+552102 was carried out at the 2.5m NOT telescope in March 2008. Optical deep images were used for studying the properties of the...
  • Publicación
    RXCJ1111.6+4050 galaxy cluster: Observational evidence of a transitional fossil group
    We present a detailed kinematical and dynamical study of the galaxy cluster RXCJ1111.6+4050 (RXCJ1111), at z = 0.0756 using 104 new spectroscopic redshifts of...
  • Publicación
    RXJ 0921+4529: A Binary Quasar or a Gravitational Lens?
    We report the new spectroscopic observations of the gravitational lens RXJ 021+4529 with the multi-mode focal reducer SCORPIO of the SAO RAS 6 m telescope. The...
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    Sailing under the Magellanic Clouds: a DECam view of the Carina dwarf
    We present deep optical photometry from the DECam imager on the 4 m Blanco telescope of over 12 deg2 around the Carina dwarf spheroidal, with complete coverage...
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    Sampling methods for stellar masses and the mmax-Mecl relation in the starburst dwarf galaxy NGC 4214
    It has been claimed in the recent literature that a non-trivial relation between the mass of the most-massive star, mmax, in a star cluster and its embedded...
  • Publicación
    San Pedro Mártir observations of microvariability in obscured quasars
    Fast brightness variations are a unique tool to probe the innermost regions of active galactic nuclei (AGN). These variations are called microvariability or...
  • Publicación
    Sardinia Radio Telescope observations of Abell 194. The intra-cluster magnetic field power spectrum
    Aims: We study the intra-cluster magnetic field in the poor galaxy cluster Abell 194 by complementing radio data, at different frequencies, with data in the...
  • Publicación
    Sardinia Radio Telescope observations of the Coma cluster
    We present deep total intensity and polarization observations of the Coma cluster at 1.4 and 6.6 GHz performed with the Sardinia Radio Telescope. By combining...