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Spatially Resolved Emission of a High Redshift DLA Galaxy with the Keck/OSIRIS IFU
Regina A. Jorgenson, Arthur M. Wolfe
We present the first Keck/OSIRIS infrared IFU observations of a high redshift damped Lyman-alpha (DLA) galaxy detected in the line of sight to a background quasar. By utilizing the…
The Rapid Decline in Metallicity of Damped Ly-alpha Systems at z~5
Marc Rafelski, Marcel Neeleman, Michele Fumagalli +2
We present evidence that the cosmological mean metallicity of neutral atomic hydrogen gas shows a sudden decrease at z>4.7 down to <Z>=-2.03(+0.09-0.11), which is 6 sigma deviant f…
UVUDF: Ultraviolet Imaging of the Hubble Ultradeep Field with Wide-field Camera 3
Harry I. Teplitz, Marc Rafelski, Peter Kurczynski +23
We present an overview of a 90-orbit Hubble Space Telescope treasury program to obtain near ultraviolet imaging of the Hubble Ultra Deep Field using the Wide Field Camera 3 UVIS de…
The Fundamental Plane of Damped Lyman Alpha Systems
Marcel Neeleman, Arthur M. Wolfe, J. Xavier Prochaska +1
Using a sample of 100 H I - selected damped Lyman alpha (DLA) systems, observed with the High Resolution Echelle Spectrometer on the Keck I telescope, we present evidence that the…
Metallicity Evolution of Damped Lyman-alpha Systems out to z~5
Marc Rafelski, Arthur M. Wolfe, J. Xavier Prochaska +2
We present chemical abundance measurements for 47 damped Lyman-alpha systems (DLAs), 30 at z>4, observed with the Echellette Spectrograph and Imager and the High Resolution Echelle…
Spectral Polarization of the Redshifted 21 cm Absorption Line Toward 3C 286
Arthur M. Wolfe, Regina A. Jorgenson, Timothy Robishaw +2
A re-analysis of the Stokes-parameter spectra obtained of the z=0.692 21 cm absorption line toward 3C 286 shows that our original claimed detection of Zeeman splitting by a line-of…