Astrofísicas: Astrometría

  • Publicación
    The Proper Motion of the Magellanic Clouds. II. New Results for Five Small Magellanic Cloud Fields
    We present new results from a ground-based program to determine the proper motion of the Magellanic Clouds (MCs) relative to background quasars (QSOs), being...
  • Publicación
    The Second International Asteroid Warning Network Timing Campaign: 2005 LW3
    The Earth close approach of near-Earth asteroid 2005 LW3 on 2022 November 23 represented a good opportunity for a second observing campaign to test the timing...
  • Publicación
    The stellar occultation by (319) Leona on 2023 September 13 in preparation for the occultation of Betelgeuse
    On 2023 December 12, the star α Orionis will be occulted by asteroid (319) Leona. This represents an extraordinary and unique opportunity to analyse the...
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    The warm molecular gas and dust of Seyfert galaxies: two different phases of accretion?
    The distribution of warm molecular gas (1000-3000 K), traced by the near-IR H2 2.12 μm line, has been imaged with a resolution
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    The young stellar population of IC 1613. I. A new catalogue of OB associations
    Context: Determining the parameters of massive stars is crucial to understand many processes in galaxies and the Universe, since these objects are important...
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    Trigonometric parallaxes of young field L dwarfs
    Aims: We aim to determine the trigonometric parallaxes and proper motions of a sample of ten field L0-L5 dwarfs with spectroscopic evidence for low-gravity...
  • Publicación
    Unidentified quasars among stationary objects from Gaia DR2
    Here we apply a technique selecting quasar candidates purely as sources with zero proper motions in the Gaia data release 2 (DR2). We demonstrate that this...
  • Publicación
    varepsilon Indi B: A new benchmark T dwarf
    We have identified a new early T dwarf only 3.6 pc from the Sun, as a common proper motion companion (separation 1459 AU) to the K5V star varepsilon Indi (HD...
  • Publicación
    Visible spectra of (474640) 2004 VN112-2013 RF98 with OSIRIS at the 10.4 m GTC: evidence for binary dissociation near aphelion among the extreme trans-Neptunian objects
    The existence of significant anisotropies in the distributions of the directions of perihelia and orbital poles of the known extreme trans-Neptunian objects...