Browsing by Author "cf3d6b32-b48c-4865-a753-6b87e7265da4"

Now showing items 1-9 of 9

    • Analysis of the Bayesian Cramer-Rao lower bound in astrometry Studying the impact of prior information in ... 
      Echeverría Solis, Alex; Silva Sánchez, Jorge; Méndez Bussard, René Alejandro; Orchard Concha, Marcos (EDP Sciences, 2016)
      Context. The best precision that can be achieved to estimate the location of a stellar-like object is a topic of permanent interest in the astrometric community. Aims. We analyze bounds for the best position estimation ...
    • Characterizing the astrometric precision limit for moving targets observed with digital-array detectors 
      Bouquillon, S.; Méndez Bussard, René Alejandro; Altmann, M.; Carlucci, T.; Barache, C.; Taris, F.; Andrei, A. H.; Smart, R. (EDP Sciences, 2017)
      Aims. We investigate the maximum astrometric precision that can be reached on moving targets observed with digital-sensor arrays, and provide an estimate for its ultimate lower limit based on the Cramer-Rao bound. Methods. ...
    • New radial systems of dark globules 
      Gyulbudaghian, A. L.; Méndez Bussard, René Alejandro (UNAM, Instituto de Astronomía, 2015)
      We present the results of a systematic survey of ESO/SRC plates of the Southern Hemisphere aimed at discovering new radial systems of dark globules. During this survey, we found 16 new type 1 radial systems and 6 type 2 ...
    • Orbits for eighteen visual binaries and two double-line spectroscopic binaries observed with hrcam on the ... 
      Méndez Bussard, René Alejandro; Claveria, Ruben M.; Orchard Concha, Marcos; Silva, Jorge F. (IOP Publishing Ltd., 2017)
      We present orbital elements and mass sums for 18 visual binary stars of spectral types B to K (five of which are new orbits) with periods ranging from 20 to more than 500 yr. For two double-line spectroscopic binaries with ...
    • Speckle interferometry at soar in 2014 
      Tokovinin, Andrei; Mason, Brian D.; Hartkopf, William I.; Méndez Bussard, René Alejandro; Horch, Elliott P. (The American Astronomical Society, 2015-08)
      The results of speckle interferometric observations at the Southern Astrophysical Research Telescope (SOAR) telescope in 2014 are given. A total of 1641 observations were taken, yielding 1636 measurements of 1218 resolved ...
    • Speckle Interometry at Soar in 2015 
      Tokovinin, Andrei; Mason, Brian D.; Hartkopf, William I.; Méndez Bussard, René Alejandro; Horch, Elliott (IOP Publishing, 2016)
      The results of speckle interferometric observations at the Southern Astrophysical Research Telescope in 2015 are provided, totaling 1303 measurements of 924 resolved binary and multiple stars, and non-resolutions of ...
    • Spectrophotometric characterization of high proper motion sources from WISE 
      Beamín, J. C.; Ivanov, V. D.; Minniti, D.; Smart, R. L.; Mužić, K.; Méndez Bussard, René Alejandro; Beletsky, Y.; Bayo, A.; Gromadzki, M.; Kurtev, R. (Oxford University Press, 2015)
      The census of the solar neighbourhood is almost complete for stars and becoming more complete in the brown dwarf regime. Spectroscopic, photometric and kinematic characterization of nearby objects helps us to understand ...
    • Spectrophotometric characterization of high proper motion sources from WISE 
      Beamín, J.; Ivanov, V.; Minniti, D.; Smart, R.; Muzic, K.; Méndez Bussard, René Alejandro; Beletsky, Y.; Bayo, A.; Gromadzki, M.; Kurtev, R. (Royal Astronomical Society, 2015)
      The census of the solar neighbourhood is almost complete for stars and becoming more complete in the brown dwarf regime. Spectroscopic, photometric and kinematic characterization of nearby objects helps us to understand ...
    • Young stars in the periphery of the Large Magellanic Cloud 
      Moni Bidin, C.; Casetti-Dinescu, D. I.; Girard, T. M.; Zhang, L.; Méndez Bussard, René Alejandro; Vieira, K.; Korchagin, V. I.; van Altena, W. F. (Oxford University, 2017)
      Despite their close proximity, the complex interplay between the two Magellanic Clouds, theMilky Way and the resulting tidal features, is still poorly understood. Recent studies haveshown that the Large Magellanic Cloud ...