Astrofísicas: Galaxias

  • Publicación
    Velocity dispersion and dynamical masses for 388 galaxy clusters and groups. Calibrating the M<SUB>SZ</SUB> − M<SUB>dyn</SUB> scaling relation for the PSZ2 sample
    The second catalogue of Planck Sunyaev-Zeldovich (SZ) sources, hereafter PSZ2, represents the largest galaxy cluster sample selected by means of their SZ...
  • Publicación
    Velocity Dispersions and Stellar Populations of the Most Compact and Massive Early-type Galaxies at Redshift ~1
    We present Gran-Telescopio-Canarias/OSIRIS optical spectra of four of the most compact and massive early-type galaxies (ETGs) in the Groth Strip Survey at...
  • Publicación
    Velocity Dispersions and Stellar Populations of the Most Compact and Massive Early-Type Galaxies at Redshift ~1
    We present Gran-Telescopio-Canarias/OSIRIS optical spectra of 4 of the most compact and massive early-type galaxies in the Groth Strip Survey at redshift z 1...
  • Publicación
    Velocity dispersions of clusters in the Dark Energy Survey Y3 redMaPPer catalogue
    We measure the velocity dispersions of clusters of galaxies selected by the red-sequence Matched-filter Probabilistic Percolation (redMaPPer) algorithm in the...
  • Publicación
    Very high energy gamma-ray observation of the peculiar transient event Swift J1644+57 with the MAGIC telescopes and AGILE
    Context. On March 28, 2011, the BAT instrument on board the Swift satellite detected a new transient event that in the very beginning was classified as a gamma...
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    Very High Energy Gamma-Ray Observations of Strong Flaring Activity in M87 in 2008 February
    M87 is the only known nonblazar radio galaxy to emit very high energy (VHE) gamma rays. During a monitoring program of M87, a rapid flare in VHE gamma-rays was...
  • Publicación
    Very High Energy γ-Rays from the Universe's Middle Age: Detection of the z = 0.940 Blazar PKS 1441+25 with MAGIC
    The flat-spectrum radio quasar PKS 1441+25 at a redshift of z = 0.940 is detected between 40 and 250 GeV with a significance of 25.5σ using the MAGIC telescopes...
  • Publicación
    Very high redshift quasars and the rapid emergence of supermassive black holes
    The observation of quasars at very high redshift such as Pōniuā'ena is a challenge for models of supermassive black hole (SMBH) formation. This work presents a...
  • Publicación
    Very Large Telescope-ISAAC Near-Infrared Spectroscopy of ISO-selected Hubble Deep Field South Galaxies
    We report the results of near-infrared Very Large Telescope (VLT)-Infrared Spectrometer and Array Camera (ISAAC) spectroscopy of a sample of 12 galaxies at z=0...