Journal: The Astrophysical Journal

  • Publication
    Overmassive Black Holes at Cosmic Noon: Linking the Local and the High-redshift Universe
    We report for the first time a sample of 12 supermassive black holes (SMBHs) hosted by low-mass galaxies at cosmic noon, i.e., in a redshift range consistent...
  • Publication
    Overview of the DESI Milky Way Survey
    We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak...
  • Publication
    Overview of the SDSS-IV MaNGA Survey: Mapping nearby Galaxies at Apache Point Observatory
    We present an overview of a new integral field spectroscopic survey called MaNGA (Mapping Nearby Galaxies at Apache Point Observatory), one of three core...
  • Publication
    Oxygen Abundances in Nearby FGK Stars and the Galactic Chemical Evolution of the Local Disk and Halo
    Atmospheric parameters and oxygen abundances of 825 nearby FGK stars are derived using high-quality spectra and a non-local thermodynamic equilibrium analysis...
  • Publication
    Oxygen Abundances in Unevolved Metal-poor Stars from Near-Ultraviolet OH Lines
    We have performed a detailed oxygen abundance analysis of 23 metal-poor (-3.0 [Fe/H] -0.3) unevolved halo stars and one giant through the OH bands in the near...
  • Publication
    Oxygen in the Very Early Galaxy
    Oxygen abundances in a sample of ultra-metal-poor subdwarfs have been derived from measurements of the oxygen triplet at 7771-5 Å and OH lines in the near-UV...
  • Publication
    Oxygen Isotopic Ratios in Cool R Coronae Borealis Stars
    We investigate the relationship between R Coronae Borealis (RCB) stars and hydrogen-deficient carbon (HdC) stars by measuring precise 16O/18O ratios for five...
  • Publication
    Panchromatic Observations and Modeling of the HV Tau C Edge-on Disk
    We present new high spatial resolution (lsim0farcs1) 1-5 μm adaptive optics images, interferometric 1.3 mm continuum and 12CO 2-1 maps, and 350 μm, 2.8 and 3.3...
  • Publication
    Parsec-scale Dust Emission from the Polar Region in the Type 2 Nucleus of NGC 424
    Advancements in infrared (IR) interferometry open up the possibility to spatially resolve active galactic nuclei (AGNs) on the parsec-scale level and study the...