10 papers
The DEEP Groth Strip Survey XII: The Metallicity of Field Galaxies at 0.26<z<0.82 and the Evolution of the Luminosity-Metallicity Relation
Henry A. Kobulnicky, Christopher N. A. Willmer, Benjamin J. Weiner +6
Using spectroscopic data from the Deep Extragalactic Evolutionary Probe (DEEP) Groth Strip survey (DGSS), we analyze the gas-phase oxygen abundances for 56 emission-line field gala…
Kinematics of Distant Galaxies from Keck
David C. Koo
DEEP is a two-phase spectral survey of faint field galaxies with the Keck Telescopes. The goals include exploring galaxy formation and evolution, mapping distant large scale struct…
A Deep Keck Spectral Survey of Cl0024+1654 at z=0.4
Anne J. Metevier, David C. Koo, Luc Simard +1
We have undertaken a Keck spectral survey of galaxies to R~24 near the central region of Cl0024+1654 at z=0.4. The spectral resolution and slits have been selected to yield kinemat…
A Pilot Study of the Tully-Fisher Relation in Cl0024+1654 at z=0.4
Anne J. Metevier, David C. Koo, Luc Simard
We present the first determination of the Tully-Fisher relation (TFR) for a distant galaxy cluster. We have measured internal kinematics of seven members of Cl0024+1654 from spatia…
Near-Infrared Spectroscopy of Two Galaxies at z=2.3 and z=2.9: New Probes of Chemical and Dynamical Evolution at High Redshift
Chip Kobulnicky, David Koo
This study presents Keck optical and infrared spectroscopy of the rest-frame ultraviolet and optical emission lines in two Lyman alpha emitting galaxies at z>2. These data provide…
Photometric Redshifts: A Perspective from an Old-Timer on Its Past, Present, and Potential
David C. Koo
I review the early history of photometric redshifts; specify a working definition that encompasses a broader range of approaches than commonly adopted; discuss the pros and cons of…