Astrofísicas: Astrometría

  • Publicación
    Optical/infrared observations of the X-ray burster KS1731-260 in quiescence
    Aims: We performed an optical/infrared study of the counterpart of the low-mass X-ray binary KS 1731-260 to test its identification and obtain information about...
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    Orbit determination of close binary systems using lucky imaging
    We present relative positions of visual binaries observed in 2009 with the FastCam 'lucky-imaging' camera mounted on the 1.5-m Carlos Sánchez Telescope at the...
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    Parallaxes and physical properties of 11 mid-to-late T dwarfs
    Aims: We present parallaxes of 11 mid-to-late T dwarfs observed in the UKIRT Infrared Deep Sky Survey. We use these results to test the reliability of model...
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    Photometric and astrometric analysis of a mutual event between the Uranian satellites Miranda and Oberon
    Observations of the predicted occultation between the satellites Miranda and Oberon were performed on 2007 July 30. Data analysis reveals that the predicted...
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    Physical properties of trans-Neptunian object (143707) 2003 UY<SUB>117</SUB> derived from stellar occultation and photometric observations
    Context. Trans-Neptunian objects (TNOs) are considered to be among the most primitive objects in our Solar System. Knowledge of their primary physical...
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    Posiciones precisas de componentes de sistemas dobles y múltiples.
    Not Available
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    Proper motion Pleiades candidate L-type brown dwarfs
    We present results of an optical and near-infrared (IR) 1.8 deg2 survey in the Pleiades open cluster to search for substellar objects. From optical I-band...
  • Publicación
    Reduction of asteroidal appulses. First results in Bucharest
    The method presented is applied to asteroidal approaches to catalogue stars and occultations, and derives the minimum separation at conjunction and the...
  • Publicación
    Search for nearby stars among proper motion stars selected by optical-to-infrared photometry. II. Two late M dwarfs within 10 pc
    We have identified two late M dwarfs within 10 pc of the Sun, by cross-correlating the Luyten NLTT catalogue of stars with proper motions larger than 0.18...