573 citations · 4.3k across the 30 of their papers we have counts for
8 papers · 1 filter
A GLIMPSE into the Nature of Galactic Mid-IR Excesses
B. Uzpen, H. A. Kobulnicky, D. R. Semler +2
We investigate the nature of the mid-IR excess for 31 intermediate-mass stars that exhibit an 8 micron excess in either the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire…
A STIS Survey for OVI Absorption Systems at 0.12 < z < 0.5 II.: Physical Conditions of the Ionised Gas
Christopher Thom, Hsiao-Wen Chen
We present a complete catalogue of 27 O VI absorbers at low redshift (0.12 < z < 0.5) from a blind survey of 16 QSO echelle spectra in the HST/STIS data archive. These absorbers ar…
Discovery of HE 1523-0901, a Strongly r-Process Enhanced Metal-Poor Star with Detected Uranium
Anna Frebel, Norbert Christlieb, John E. Norris +3
We present age estimates for the newly discovered very r-process enhanced metal-poor star HE 1523-0901 ([Fe/H]=-2.95) based on the radioactive decay of Th and U. The bright (V=11.1…
Bright Metal-Poor Stars from the Hamburg/ESO Survey. I. Selection and Follow-up Observations from 329 Fields
A. Frebel, N. Christlieb, J. E. Norris +9
We present a sample of 1777 bright (9<B<14) metal-poor candidates selected from the Hamburg/ESO Survey (HES). Despite saturation effects present in the red portion of the HES objec…
A Catalogue of Field Horizontal Branch Stars Aligned with High Velocity Clouds
Christopher Thom, Brad K. Gibson, Norbert Christlieb
We present a catalogue of 430 Field Horizontal Branch (FHB) stars, selected from the Hamburg/ESO Survey (HES), which fortuitously align with high column density neutral hydrogen (H…
Kinematics of the Galactic Halo from Horizontal Branch stars in the Hamburg/ESO Survey
Christopher Thom, Chris Flynn, Michael S. Bessell +6
Large samples of Field Horizontal Branch (FHB) stars make excellent tracers of the Galactic halo; by studying their kinematics, one can infer important physical properties of our G…