Journal: The Astrophysical Journal

  • Publication
    A Precise Asteroseismic Age and Radius for the Evolved Sun-like Star KIC 11026764
    The primary science goal of the Kepler Mission is to provide a census of exoplanets in the solar neighborhood, including the identification and characterization...
  • Publication
    A Pulsational Distance to ω Centauri Based on Near-Infrared Period-Luminosity Relations of RR Lyrae Stars
    We present new near-infrared (J and K) magnitudes for 114 RR Lyrae stars in the globular cluster ω Centauri (NGC 5139), which we combine with data from the...
  • Publication
    A Radio, Optical, UV, and X-Ray View of the Enigmatic Changing-look Active Galactic Nucleus 1ES 1927+654 from Its Pre- to Postflare States
    The nearby Type II active galactic nucleus (AGN) 1ES 1927+654 went through a violent changing-look (CL) event beginning 2017 December during which the optical...
  • Publication
    A Reappraisal of the Solar Photospheric C/O Ratio
    An accurate determination of photospheric solar abundances requires detailed modeling of the solar granulation and accounting for departures from local...
  • Publication
    A Reemerging Bright Soft X-Ray State of the Changing-look Active Galactic Nucleus 1ES 1927+654: A Multiwavelength View
    1ES1927+654 is a nearby active galactic nucleus (AGN) that has shown an enigmatic outburst in optical/UV followed by X-rays, exhibiting strange variability...
  • Publication
    A Reverse Shock in GRB 181201A
    We present comprehensive multiwavelength radio to X-ray observations of GRB 181201A spanning from ≈150 s to ≈163 days after the burst, comprising the first...
  • Publication
    A Robust Age Indicator for Old Stellar Populations
    We derive new spectral Hγ index definitions that are robust age indicators for old and relatively old stellar populations and therefore have great potential for...
  • Publication
    A Robust Determination of the Size of Quasar Accretion Disks Using Gravitational Microlensing
    Using microlensing measurements for a sample of 27 image pairs of 19 lensed quasars we determine a maximum likelihood estimate for the accretion disk size of an...
  • Publication
    A Search for Faint Resolved Galaxies Beyond the Milky Way in DES Year 6: A New Faint, Diffuse Dwarf Satellite of NGC 55
    We report results from a systematic wide-area search for faint dwarf galaxies at heliocentric distances from 0.3 to 2 Mpc using the full 6 yr of data from the...