Browsing by Author "ace39c1f-ee9d-4beb-9014-657c78530828"

Now showing items 1-7 of 7

    • A megacam survey of outer halo satellites. I. description of the survey 
      Muñoz Vidal, Ricardo Rodrigo; Cote, Patrick; Santana, Felipe; Geha, Marla; Simón, Joshua D.; Oyarzún, Grecco A.; Stetson, Peter B.; Djorgovski, S. G. (IOP Publishing, 2018-06-10)
      We describe a deep, systematic imaging study of satellites in the outer halo of the Milky Way. Our sample consists of 58 stellar overdensities-i.e., substructures classified as either globular clusters, classical dwarf ...
    • A megacam survey of outer halo satellites. III. Photometric and structural parameters 
      Muñoz Vidal, Ricardo Rodrigo; Cote, Patrick; Santana, Felipe; Geha, Marla; Simón, Joshua D.; Oyarzún, Grecco A.; Stetson, Peter B.; Djorgovski, S. G. (The American Astronomical Society, 2018-06-10)
      We present structural parameters from a wide-field homogeneous imaging survey of Milky Way satellites carried out with the MegaCam imagers on the 3.6 m Canada-France-Hawaii Telescope and 6.5 m Magellan-Clay telescope. Our ...
    • Chemical abundances of main-sequence, turnoff, subgiant, and red giant stars from APOGEE Spectra. I. ... 
      Souto, Diogo; Cunha, Katia; Smith, Verne V.; Santana, Felipe (IOP Publishing Ltd, 2018)
      Detailed chemical abundance distributions for 14 elements are derived for eight high-probability stellar members of the solar metallicity old open cluster M67 with an age of similar to 4 Gyr. The eight stars consist of ...
    • Sloan digital sky survey IV: mapping the milky way, nearby galaxies, and the distant universe 
      Blanton, Michael R.; Bershady, Matthew A.; Abolfathi, Bela; Muñoz Vidal, Ricardo Rodrigo; Santana, Felipe (IOP Publishing Ltd., 2017)
      We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands ...
    • SMASH: survey of the MAgellanic Stellar history 
      Nidever, David L.; Olsen, Knut; Muñoz Vidal, Ricardo Rodrigo; Santana, Felipe; Medina, Gustavo E. (IOP Publishing Ltd., 2017)
      The Large and Small Magellanic Clouds are unique local laboratories for studying the formation and evolution of small galaxies in exquisite detail. The Survey of the MAgellanic Stellar History (SMASH) is an NOAO community ...
    • Stellar and planetary characterization of the ross 128 exoplanetary system from APOGEE spectra 
      Souto, Diogo; Unterborn, Cayman T.; Smith, Verne V.; Cunha, Katia; Teske, Johanna; Covey, Kevin; Rojas Ayala, Barbara; García Hernández, D. A.; Stassun, Keivan; Zamora, Olga; Masseron, Thomas; Johnson, J. A.; Majewski, Steven R.; Jonsson, Henrik; Gilhool, Steven; Blake, Cullen; Santana, Felipe (IOP Publishing, 2018-06-10)
      The first detailed chemical abundance analysis of the M-dwarf (M4.0) exoplanet-hosting star Ross 128 is presented here, based upon near-infrared (1.5-1.7 mu m), high-resolution (R similar to 22,500) spectra from the SDSS ...
    • The Hercules stream as seen by APOGEE-2 South 
      Hunt, Jason A. S.; Bovy, Jo; Pérez Villegas, Angeles; Holtzman, Jon A.; Sobeck, Jennifer; Chojnowski, Drew; Santana, Felipe A.; Palicio, Pedro A.; Wegg, Christopher; Gerhard, Ortwin; Almeida, Andres; Bizyaev, Dmitry; Fernández Trincado, Jose G.; Lane, Richard R.; Longa Peña, Penélope; Majewski, Steven R.; Pan, Kaike; Roman Lópes, Alexandre (Oxford University Press, 2018)
      The Hercules stream is a group of comoving stars in the solar neighbourhood, which can potentially be explained as a signature of either the outer Lindblad resonance (OLR) of a fast Galactic bar or the corotation resonance ...