Other
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942610y&link_type=abstract
American Astronomical Society, AAS Meeting #219, #426.10
Other
Scientific paper
Our WIYN/ HYDRA galaxy redshift survey is designed to obtain redshifts for all galaxies with a g-magnitude less than or equal to 20 located within 20’ of 39 different sightlines targeted by the COS GTO team. Data was reduced in IRAF using standard routines and the dohydra task, for spectral extraction.
The redshifts were determined by IDL code developed by D. Syphers and were then inspected by eye. The program uses three methods to automatically determine the redshift: cross-correlation using template galaxies, a wavelet search for strong emission lines, and a wavelet search for Ca H&K (and other absorption lines). Inspecting these redshifts required, for each object, a verification of the cross-correlation fit and, depending on the available spectra, a determination of proper emission and absorption features.
In conducting our survey of the 3C 263 sightline, we've discovered a number of galaxies in the vicinity of our sightline, including one that happens to be located extremely close to the sightline at the same redshift as an IGM absorber seen in the QSO spectrum. This galaxy's activity may have contributed to our QSO spectrum, allowing us to determine whether or not material may have been ejected from these objects.
Keeney Brian
Stocke John
Syphers David
Yamamoto Helen
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