Browsing by Author "Gálvez Ortiz, M. C."

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    • Analysis of combined radial velocities and activity of BD+20 1790: evidence supporting the existence of a ... 
      Hernán Obispo, M.; Tuomi, M.; Gálvez Ortiz, M. C.; Golovin, A.; Barnes, J. R.; Jones, H. R. A.; Kane, S. R.; Pinfield, D.; Jenkins, James Stewart; Petit, P.; Anglada Escudé, Guillem; Marsden, S. C.; Catalán, S.; Jeffers, S. V.; Castro, E. de; Cornide, M.; Garcés, A.; Jones, M. I.; Gorlova, N.; Andreev, M. (EDP Sciences, 2015)
      Context. In a previous paper we reported a planetary companion to the young and very active K5Ve star BD+20 1790. We found that this star has a high level of stellar activity (log R HK = −3.7) that manifests in a plethora ...
    • A deep WISE search for very late type objects and the discovery of two halo/thick-disc T dwarfs: WISE ... 
      Pinfield, D. J.; Gomes, J.; Day Jones, A. C.; Leggett, S. K.; Gromadzki, M.; Burningham, B.; Ruiz González, María Teresa; Kurtev, R.; Cattermole, T.; Cardoso, C.; Lodieu, N.; Faherty, J.; Littlefair, S.; Smart, R.; Irwin, M.; Clarke, J. R. A.; Smith, L.; Lucas, P. W.; Gálvez Ortiz, M. C.; Jenkins, James Stewart; Jones, H. R. A.; Rebolo, L.; Béjar, V. J. S.; Gauza, B. (Oxford University Press, 2014)
      A method is defined for identifying late-T and Y dwarfs in WISE down to low values of signalto- noise. This requires a WISE detection only in theW2-band and uses the statistical properties of the WISE multiframe measurements ...
    • A search for southern ultracool dwarfs in young moving groups 
      Clarke, J. R. A.; Pinfield, D. J.; Gálvez Ortiz, M. C.; Jenkins, James Stewart; Burningham, B.; Deacon, N. R.; Jones, Hugh; Pokorny, R. S.; Barnes, J. R.; Day-Jones, A. C. (2010)
      We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups (MGs) using photometric and astrometric selection techniques. Of these objects, we present high-resolution ...
    • Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups 
      Gálvez Ortiz, M. C.; Kuznetsov, M.; Clarke, J. R. A.; Pavlenko, Ya. V.; Folkes, S. L.; Pinfield, D. J.; Jones, H. R. A.; Jenkins, James Stewart; Barnes, J. R.; Burningham, B.; Day Jones, A. C.; Martín, E. L.; García Pérez, A. E.; Burgo, C. del; Pokorny, R. S. (Oxford University Press, 2014)
      We present a study of age-related spectral signatures observed in 25 young low-mass objects that we have previously determined as possible kinematic members of five young moving groups: the Local Association (Pleiades ...