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5 papers · 2 filters
Lyman break galaxy close and interacting pairs at z ~ 3
Jeff Cooke, Joel C. Berrier, Elizabeth J. Barton +2
To date, the identification of interactions at z ~ 3 and above has relied on morphological analysis. Here, we present five serendipitous spectroscopic z ~ 3 Lyman break galaxy (LBG…
Deep Keck u-band imaging of the Hubble Ultra Deep Field: A catalog of z~3 Lyman Break Galaxies
Marc Rafelski, Arthur M. Wolfe, Jeff Cooke +3
We present a sample of 407 z~3 Lyman break galaxies (LBGs) to a limiting isophotal u-band magnitude of 27.6 mag in the Hubble Ultra Deep Field (UDF). The LBGs are selected using a…
Direct Evidence of Cold Gas in DLA 0812+32B
Regina A. Jorgenson, Arthur M. Wolfe, J. Xavier Prochaska +1
We present the first direct evidence for cold gas in a high redshift DLA galaxy. We measured several multiplets of weak neutral carbon (CI) transitions in order to perform a curve…
Metal-Enriched Plasma in Protogalactic Halos: A Survey of N V Absorption in High-z Damped & Sub-Damped Lyman-alpha Systems
Andrew J. Fox, J. Xavier Prochaska, Cédric Ledoux +3
We continue our recent work to characterize the plasma content of high-redshift damped and sub-damped Lyman-alpha systems (DLAs/sub-DLAs), which represent multi-phase gaseous (prot…
Wavelength Accuracy of the Keck HIRES Spectrograph and Measuring Changes in the Fine Structure Constant
Kim Griest, Jonathan B. Whitmore, Arthur M. Wolfe +3
We report on an attempt to accurately wavelength calibrate four nights of data taken with the Keck HIRES spectrograph on QSO PHL957, for the purpose of determining whether the fine…