PROBING THE IGM/GALAXY CONNECTION. IV. THE LCO/WFCCD GALAXY SURVEY OF 20 FIELDS SURROUNDING UV-BRIGHT QUASARS

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/193/2/28· OSTI ID:21560402

Prochaska, J Xavier ^[1]; Weiner, B ^[2]; Chen, H -W ^[3]; Cooksey, K L ^[4]

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1. Department of Astronomy and Astrophysics and UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States)
2. Steward Observatory, University of Arizona, 933 N. Cherry Ave., Tucson, AZ 85721 (United States)
3. Department of Astronomy, University of Chicago, 5640 S. Ellis Ave., Chicago, IL 60637 (United States)
4. MIT Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, 37-611, Cambridge, MA 02139 (United States)

We publish the survey for galaxies in 20 fields containing ultraviolet bright quasars (with z{sub em} {approx} 0.1-0.5) that can be used to study the association between galaxies and absorption systems from the low-z intergalactic medium (IGM). The survey is magnitude limited (R {approx} 19.5 mag) and highly complete out to 10' from the quasar in each field. It was designed to detect dwarf galaxies (L {approx} 0.1L*) at an impact parameter {rho} {approx} 1 Mpc (z = 0.1) from a quasar. The complete sample (all 20 fields) includes R-band photometry for 84,718 sources and confirmed redshifts for 2800 sources. This includes 1198 galaxies with 0.005 < z < (z{sub em} - 0.01) at a median redshift of 0.18, which may associated with IGM absorption lines. All of the imaging was acquired with cameras on the Swope 40'' telescope and the spectra were obtained via slit mask observations using the WFCCD spectrograph on the Dupont 100'' telescope at Las Campanas Observatory. This paper describes the data reduction, imaging analysis, photometry, and spectral analysis of the survey. We tabulate the principal measurements for all sources in each field and provide the spectroscopic data set online.

• OSTI ID: 21560402
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 193, Issue 2; Other Information: DOI: 10.1088/0067-0049/193/2/28; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
CAMERAS
GALAXIES
PHOTOMETRY
QUASARS
RED SHIFT
STATISTICS
TELESCOPES
ULTRAVIOLET RADIATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
MATHEMATICS
RADIATIONS
SORPTION