1.2k citations
- California Institute of TechnologyUS309 papers
- University of California, Santa CruzUS123 papers
- University of ArizonaUS114 papers
- University of Hawaii SystemUS110 papers
- Center for Astrophysics Harvard & SmithsonianUS93 papers
- Centre National de la Recherche ScientifiqueFR93 papers
- Jet Propulsion LaboratoryUS92 papers
- University of Hawaiʻi at MānoaUS87 papers
- Space Telescope Science InstituteUS86 papers
- University of California, Los AngelesUS83 papers
- University of California, BerkeleyUS79 papers
- University of California San DiegoUS72 papers
19 papers · 1 filter
Properties of Two New M31 dSph Companions from Keck Imaging
Eva K. Grebel, Puragra Guhathakurta
We have obtained Keck Low Resolution Imaging Spectrograph images in V and I of the newly discovered Local Group dwarf galaxies Pegasus dSph and Cassiopeia dSph and their surroundin…
The Physical Nature of the Lyman Limit Systems
Jason X. Prochaska
We analyze Keck HIRES observations of a Lyman limit system at z=2.652 toward Q2231-00. These observations afford the most comprehensive study of the physical properties of a LL sys…
Chemical Abundances of the Damped Lya Systems at z>1.5
Jason X. Prochaska, Arthur M. Wolfe
We present chemical abundance measurements for 19 damped lya systems observed with HIRES on the 10m W.M. Keck Telescope. Our principal goal is to investigate the abundance patterns…
The Deuterium Abundance at z=0.701 towards QSO 1718+4807
David Tytler, Scott Burles, Limin Lu +3
We present constraints on the deuterium to hydrogen ratio (D/H) in the metal-poor gas cloud at redshift towards QSO 1718+4807. We use new Keck spectra in addition to Hubb…
The Discovery and Broad-band Follow-up of the Transient Afterglow of GRB 980703
J. S. Bloom, D. A. Frail, S. R. Kulkarni +14
We report on the discovery of the radio, infrared and optical transient coincident with an X-ray transient proposed to be the afterglow of GRB 980703. At later times when the trans…
Spectroscopy of the Host Galaxy of the Gamma--Ray Burst 980703
S. G. Djorgovski, S. R. Kulkarni, J. S. Bloom +4
We present spectroscopic observations of the host galaxy of the gamma-ray burst (GRB) 980703. Several emission and absorption features are detected, making the redshift, z = 0.966,…