Journal: The Astrophysical Journal

  • Publication
    Fundamental Parameters and Chemical Composition of Arcturus
    We derive a self-consistent set of atmospheric parameters and abundances of 17 elements for the red giant star Arcturus: T eff = 4286 ± 30 K, log g = 1.66 ± 0...
  • Publication
    Fundamental Properties of Stars Using Asteroseismology from Kepler and CoRoT and Interferometry from the CHARA Array
    We present results of a long-baseline interferometry campaign using the PAVO beam combiner at the CHARA Array to measure the angular sizes of five main-sequence...
  • Publication
    Further Evidence for a Supermassive Black Hole Mass-Pitch Angle Relation
    We present new and stronger evidence for a previously reported relationship between galactic spiral arm pitch angle P (a measure of the tightness of spiral...
  • Publication
    G-Band Spectral Synthesis in Solar Magnetic Concentrations
    Narrowband imaging in the G band is commonly used to trace the small magnetic field concentrations of the Sun, although the mechanism that makes them bright has...
  • Publication
    Galactic Bulges from Hubble Space Telescope Near-Infrared Camera Multi-Object Spectrometer Observations: The Lack of r1/4 Bulges
    We use Hubble Space Telescope (HST) near-infrared imaging to explore the shapes of the surface brightness profiles of bulges of S0-Sbc galaxies at high...
  • Publication
    Galactic Bulges from Hubble Space Telescope NICMOS Observations: Central Galaxian Objects, and Nuclear Profile Slopes
    We have measured the central structural properties for a sample of S0-Sbc galaxies down to scales of ~10 pc using Hubble Space Telescope NICMOS images. Central...
  • Publication
    Galactic Bulges from Hubble Space Telescope NICMOS Observations: Global Scaling Relations
    We investigate bulge and disk scaling relations using a volume-corrected sample of early- to intermediate-type disk galaxies in which, importantly, the biasing...
  • Publication
    Galactic Interstellar Gas Cloud Mass Functions: A Simple Quantitative Approach
    We present here a simple approach to understanding the gas cloud mass distribution function by simulating formation and destruction of gas clouds and gas clumps...
  • Publication
    Galactic Populations of Radio and Gamma-Ray Pulsars in the Polar Cap Model
    We simulate the characteristics of the Galactic population of radio and γ-ray pulsars using Monte Carlo techniques. At birth, neutron stars are spatially...