Tipo de publicación: Con árbitro

  • Publicación
    A new visual - near-infrared diagnostic to estimate the metallicity of cluster and field dwarf stars
    We present a theoretical calibration of a new metallicity diagnostic based on the Strömgren index m1 and on visual - near-infrared (NIR) colors to estimate the...
  • Publicación
    A new VLA/e-MERLIN limit on central images in the gravitational lens system CLASS B1030+074
    We present the new Very Large Array 22 GHz and extended Multi-Element Remote-Linked Interferometer Network 5 GHz observations of CLASS B1030+074, a two-image...
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    A new α-enhanced super-solar metallicity population
    We performed a uniform and detailed analysis of 1112 high-resolution spectra of FGK dwarfs obtained with the HARPS spectrograph at the ESO 3.6 m telescope (La...
  • Publicación
    A new, evolved bipolar planetary nebula.
    Optical imaging and spectroscopy reveal that the ionised region No.252 in the list of Marsalkowa (1974Ap&SS..27....3M), whose photograph is presented in the `...
  • Publicación
    A newly identified galaxy group thanks to tidal streams of intragroup light
    Context. In the accretion-driven growth scenario, part of the intracluster light is formed in the group environment. Aims: We report the serendipitous discovery...
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    A NICER look at the state transitions of the black hole candidate MAXI J1535-571 during its reflares
    The black hole candidate and X-ray binary MAXI J1535-571 was discovered in 2017 September. During the decay of its discovery outburst, and before returning to...
  • Publicación
    A non-LTE stellar atmosphere study of nitrogen-rich early-type stars
    Spectrograms of a sample of nitrogen-rich early type stars (OBN stars) are analyzed differentially to normal stars of similar spectral types by means of NLTE...
  • Publicación
    A novel black hole mass scaling relation based on coronal gas, and its dependence with the accretion disc
    Using bona-fide black hole (BH) mass estimates from reverberation mapping and the line ratio [Si VI] 1.963$\rm{\mu m}$/Brγ broad as tracer of the AGN ionizing...
  • Publicación
    A Novel Design and Optimization Approach for Low Noise Amplifiers (LNA) Based on MOST Scattering Parameters and the gm/ID Ratio
    This work presents a new design methodology for radio frequency (RF) integrated circuits based on a unified analysis of the scattering parameters of the circuit...