Astrophysical: Galaxies

  • Publication
    Hubble Space Telescope Observations of the Host Galaxies of BL Lacertae Objects
    Six BL Lac objects from the complete 1 Jy radio-selected sample of 34 objects were observed in cycle 5 with the Hubble Space Telescope (HST) Wide-Field...
  • Publication
    HUBBLE SPACE TELESCOPE Observations of the Local Group Dwarf Galaxy Leo I
    We present deep HST F555W (V) and F814W (I) observations of a central field in the Local Group dwarf spheroidal (dSph) galaxy Leo I. The resulting color...
  • Publication
    Hubble Space Telescope Observations of the Optical Jets of PKS 0521-365, 3C 371, and PKS 2201+044
    Hubble Space Telescope (HST) observations have led to the discovery of the optical counterpart of the radio jet of PKS 2201+044 and to a detailed analysis of...
  • Publication
    Hubble Space Telescope study of resolved red giant stars in the outer halos of nearby dwarf starburst galaxies
    Context. Central starbursts in galaxies are an extreme example of ongoing galaxy evolution. The outer parts of galaxies contain a fossil record of galaxy...
  • Publication
    Hubble Space Telescope-NICMOS Observations of M31'S Metal-Rich Globular Clusters and Their Surrounding Fields. I. Techniques
    Astronomers are always anxious to push their observations to the limit-basing results on objects at the detection threshold, spectral features barely stronger...
  • Publication
    Hubble Space Telescope-NICMOS Observations of M31'S Metal-Rich Globular Clusters and Their Surrounding Fields. II. Results
    We have obtained HST-NICMOS observations of five of M31's most metal-rich globular clusters: G1, G170, G174, G177, and G280. For the two clusters farthest from...
  • Publication
    Hunting down systematics in baryon acoustic oscillations after cosmic high noon
    Future dark energy experiments will require accurate theoretical predictions for the baryon acoustic oscillations (BAOs). Here, we use large N-body simulations...
  • Publication
    Hunting extreme BL Lacertae blazars with Fermi-Large Area Telescope
    The emission of very-high-energy (VHE) photons ($E\ \gt\ 100\ \mathrm{GeV}$) in blazars is closely connected to the production of ultra-relativistic particles...
  • Publication
    Hunting for red supergiant binaries: UVIT photometry of the SMC
    . We present UVIT/Astrosat UV photometry of the RSG population of the Small Cloud galaxy (SMC). As RSGs are extremely faint in the far-UV, these observations...