• Publicación
    A search for stellar tidal debris of defunct dwarf galaxies around globular clusters in the inner Galactic halo
    In the hierarchical formation scenario in which the outer halo of the Milky Way is the result of the continuous accretion of low-mass galaxies, a fraction of...
  • Publicación
    A search for substellar members in the Praesepe and σ Orionis clusters
    We have conducted deep photometric searches for substellar members of the Praesepe (0.5-1 Gyr) and σ Orionis (3 Myr) star clusters using the Sloan i' and z'...
  • Publicación
    A Search for the Optical Counterpart to the Magnetar CXOU J010043.1-721134
    After our tentative detection of an optical counterpart to CXOU J010043.1-721134 from archival Hubble Space Telescope (HST) imaging, we have followed up with...
  • Publicación
    A search for transiting planets around hot subdwarfs. I. Methods and performance tests on light curves from Kepler, K2, TESS, and CHEOPS
    Context. Hot subdwarfs experienced strong mass loss on the red giant branch (RGB) and are now hot and small He-burning objects. These stars constitute excellent...
  • Publicación
    A Search for Very High Energy Gamma-Ray Emission from Scorpius X-1 with the Magic Telescopes
    The acceleration of particles up to GeV or higher energies in microquasars has been the subject of considerable theoretical and observational efforts in the...
  • Publicación
    A Search for Very Low Mass Stars and Brown Dwarfs in the Young sigma Orionis Cluster
    We present a CCD-based photometric survey covering 870 arcmin^2 in a young stellar cluster around the young multiple star sigma Orionis. Our survey-limiting R...
  • Publicación
    A Search for Warm Neutral Gas Associated with the Giant HII Region NGC 604
    The characteristics of the halo gas and its interaction with the galactic disk in spiral galaxies are poorly known; this is particularly true for the warm...
  • Publicación
    A second low-mass planet orbiting the nearby M-dwarf GJ 536
    GJ 536 is a low-mass star, located 10 pc away from the Sun, that hosts a low-mass planet orbiting with a period of 8.71 days. Based on an analysis of the radial...
  • Publicación
    A Second Planet Transiting LTT 1445A and a Determination of the Masses of Both Worlds
    LTT 1445 is a hierarchical triple M-dwarf star system located at a distance of 6.86 pc. The primary star LTT 1445A (0.257 M ⊙) is known to host the transiting...