Publication type: Refereed

  • Publication
    On the Connection of the Apparent Proper Motion and the VLBI Structure of Compact Radio Sources
    Many of the compact extragalactic radio sources that are used as fiducial points to define the celestial reference frame are known to have proper motions...
  • Publication
    On the constraining observations of the dark GRB 001109 and the properties of a z = 0.398 radio selected starburst galaxy contained in its error box
    We present optical and NIR (near infrared) follow up observations of the GRB 001109 from 1 to 300 days after the burst. No transient emission was found at these...
  • Publication
    On the Cooling Tails of Thermonuclear X-ray Bursts: The IGR J17480-2446 Link
    The neutron star transient and 11 Hz X-ray pulsar IGR J17480-2446, recently discovered in the globular cluster Terzan 5, showed unprecedented bursting activity...
  • Publication
    On the correlation of power in sunspot umbral oscillations with continuum brightness
    We analyze time sequences of spectral lines formed at the photospheric level in order to study the correlation of umbral oscillations with continuum brightness...
  • Publication
    On the Curvature of Dust Lanes in Galactic Bars
    We test the theoretical prediction that the straightest dust lanes in bars are found in strongly barred galaxies, or more specifically, that the degree of...
  • Publication
    On the dearth of C-enhanced metal-poor stars in the galactic bulge
    The chemical fingerprints of the first stars are retained within the photospheres of ancient unevolved metal-poor stars. A significant fraction of these stellar...
  • Publication
    On the Dearth of Ultra-faint Extremely Metal-poor Galaxies
    Local extremely metal-poor galaxies (XMPs) are of particular astrophysical interest since they allow us to look into physical processes characteristic of the...
  • Publication
    On the Density Profile of the Globular Cluster M92
    We present new number density and surface brightness profiles for the globular cluster M92 (NGC 6341). These profiles are calculated from optical images...
  • Publication
    On the determination of temperatures of ionizing stars in H II regions
    Following earlier work by Shields and Searle and by Mathis, the authors define a radiation softness parameter η = (O+/O++)(S++/S+), which they recommend as a...