Journal: The Astrophysical Journal

  • Publication
    Optical Recombination Lines of Heavy Elements in Giant Extragalactic H II Regions
    We present high-resolution observations of the giant extragalactic H II regions NGC 604, NGC 2363, NGC 5461, and NGC 5471, based on observations taken with the...
  • Publication
    Optical Spectroscopic Survey of a Sample of Unidentified Fermi Objects
    We present optical spectroscopy secured at the 10 m Gran Telescopio Canarias of the counterparts of 20 extragalactic γ-ray sources detected by the Fermi...
  • Publication
    Optical Spectroscopic Survey of a Sample of Unidentified Fermi Objects: II
    We report on optical spectroscopy obtained at the 10.4 m Gran Telescopio Canarias of 28 Fermi γ-ray sources that completes the study of a sample of 60 targets...
  • Publication
    Optical Tomography of a Sunspot. II. Vector Magnetic Field and Temperature Stratification
    An observational determination of the three-dimensional magnetic and thermal structure of a sunspot is presented. It has been obtained through the application...
  • Publication
    Optical Tomography of a Sunspot. III. Velocity Stratification and the Evershed Effect
    The stratification with optical depth of the line-of-sight (LOS) velocity of a simple, isolated, round sunspot observed with the Advanced Stokes Polarimeter...
  • Publication
    Optically Faint Massive Balmer Break Galaxies at z > 3 in the CANDELS/GOODS Fields
    We present a sample of 33 Balmer break galaxies (BBGs) selected as Hubble Space Telescope/F160W dropouts in the deepest CANDELS/GOODS fields (H ≳ 27.3 mag) but...
  • Publication
    Orbital and Physical Properties of the σ Ori Aa, Ab, B Triple System
    We provide a complete characterization of the astrophysical properties of the σ Ori Aa, Ab, B hierarchical triple system and an improved set of orbital...
  • Publication
    Orbital Torus Imaging: Using Element Abundances to Map Orbits and Mass in the Milky Way
    Many approaches to galaxy dynamics assume that the gravitational potential is simple and the distribution function is time invariant. Under these assumptions...
  • Publication
    Oscillations in the Photosphere of a Sunspot Umbra from the Inversion of Infrared Stokes Profiles
    We report on the detection of magnetic field strength and velocity oscillations in the photosphere of a sunspot umbra. Our analysis is based on the inversion of...