Astrofísicas: Función de luminosidad

  • Publicación
    New brown dwarfs in Upper Sco using UKIDSS Galactic Cluster Survey science verification data
    We present first results from a deep (J = 18.7), wide-field (6.5deg2) infrared (ZY JHK) survey in the Upper Sco association conducted within the science...
  • Publicación
    New Isolated Planetary-mass Objects and the Stellar and Substellar Mass Function of the σ Orionis Cluster
    We report on our analysis of the VISTA Orion ZY JHKs photometric data (completeness magnitudes of Z = 22.6 and J = 21.0 mag) focusing on a circular area of 2798...
  • Publicación
    New very massive stars in Cygnus OB2
    Context: The compact association Cygnus OB2 is known to contain a large population of massive stars, but its total mass is currently a matter of debate. While...
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    On the buildup of massive early-type galaxies at z ⪉ 1. I. Reconciling their hierarchical assembly with mass downsizing
    Context. Several studies have tried to ascertain whether the increase in abundance of the early-type galaxies (E-S0a's) with time is mainly due to major mergers...
  • Publicación
    On the Dearth of Ultra-faint Extremely Metal-poor Galaxies
    Local extremely metal-poor galaxies (XMPs) are of particular astrophysical interest since they allow us to look into physical processes characteristic of the...
  • Publicación
    On the dust properties of the UV galaxies in the redshift range z 0.6-1.2
    Far-infrared observations from the Herschel Space Observatory are used to estimate the infrared (IR) properties of ultraviolet-selected galaxies. We stack the...
  • Publicación
    On the Galactic globular cluster Delta VHBbump parameter .
    We calculated new estimates of the Delta VHBbump parameter for 15 Galactic Globular Clusters (GGCs) using accurate ground-based photometric data. We enlarged...
  • Publicación
    On the importance of the few most massive stars: The ionizing cluster of NGC 588
    We present the results of a double analysis of the ionizing cluster in NGC 588, a giant HII region (GHR) in the outskirts of the nearby galaxy M 33. For this...
  • Publicación
    Optical and infrared photometry of new very low-mass stars and brown dwarfs in the sigma Orionis cluster
    We present an RI photometric survey covering an area of 430 arcmin2 around the multiple star sigma Orionis. The observations were conducted with the 0.8 m IAC...