• Talk
    (1) Polarized Line Formation theories: the relevance of partial; (2) TBD; (3) On all things transit.
    1) Polarized Line Formation theories: the relevance of partial non-coherence in light scattering. Dr. Sampoorna Malali The basic theoretical tool for diagnosing...
  • 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...
  • Publication
    Accurate Inner Stellar Density Slopes from Projected Surface Densities in Galaxies
    The inner slope of the three-dimensional stellar density in dwarf galaxies ( ρ ' [ 0 ] ) is a sensitive probe of possible departures from the collisionless cold...
  • Publication
    An Unexplained Origin for the Unusual Globular Cluster System in the Ultradiffuse Galaxy FCC 224
    We study the quiescent ultradiffuse galaxy FCC 224 in the Fornax cluster using Hubble Space Telescope (HST) imaging, motivated by peculiar properties of its...
  • Talk
    Andromeda II: a merger remnant or a product of tidal stirring
    I will present an evolutionary model for the origin of Andromeda II, a dSph satellite of M31, involving a merger between two disky dwarf galaxies than explains...
  • Publication
    Application of a new evolutionary model for stellar populations to photometric maps of M32
    A cyclical approximation of the evolutionary synthesis of stellar populations has been developed into a general solution for the mass and time-dependence of the...
  • Publication
    Are Gas-rich Ultra-diffuse Galaxies and Field Dwarfs Distinct?
    We explore the differences in gas-rich field ultra-diffuse galaxies (UDGs) and diffuse classical dwarf galaxies using an extensive atomic gas (H I) follow-up...
  • Talk
    Astrophysical probes of dark matter
    Dark matter makes up most of the mass of the Universe but remains mysterious. I discuss recent progress in constraining its properties by measuring its...
  • Publication
    Asymptotic giant branch stars in NGC 6822: Probes of star formation history
    About 500 asymptotic giant branch (AGB) stars have been resolved and photometrically measured in the Local Group (LG) dwarf irregular galaxy NGC 6822. They draw...