Abstract
view Abstract Citations (82) References (11) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Canada-France Redshift Survey. V. Global Properties of the Sample Crampton, David ; Le Fevre, O. ; Lilly, S. J. ; Hammer, F. Abstract The Canada-France Redshift Survey is an unprecedentedly large sample of spectra of very faint 17.5 ≤ IAB ≤ 22.5 objects in five separate fields in which 85% of the target objects are securely identified. The photometric and spectroscopic data discussed in earlier CFRS papers are combined in this paper, and analyses are carried out to verify the integrity of the sample so that it can be confidently used for future scientific investigations. The redshift histogram of the sample is presented for 591 field galaxies with secure redshifts. The median redshift is = 0.56, and the highest redshift observed is z ∼ 1.3; 25 galaxies have measured redshifts z> 1. The distributions of magnitudes and colors demonstrate that galaxies at these high redshifts have very similar colors to those observed locally. The survey thus represents a major improvement in our knowledge of field galaxies at large look-back times. Only ∼1% of galaxies with 17.5 ≤ IAB ≤ 22.5 are as compact as stars (on images with FWHM ∼0".9), and comparison of the photometric and spectroscopic data shows that only one galaxy was initially incorrectly classified spectroscopically as a star and only two stars were misclassified as galaxies. It is demonstrated that the redshift distributions in the five fields are statistically consistent with each other, once the reduction in the effective number of independent galaxies due to small-scale clustering in redshift is taken into account. The photometric properties of the spectroscopically unidentified objects (15% of the sample) indicate that most are likely to be galaxies rather than stars. At least half of these must have the same redshift distribution as the identified galaxies, and a combination of magnitudes, colors, and compactness of the remaining unidentified galaxies is used to predict their redshifts. The majority are probably ordinary galaxies at the high-redshift end of our sample, including some quiescent galaxies at z > 1.0, rather than some new or unusual population. Publication: The Astrophysical Journal Pub Date: December 1995 DOI: 10.1086/176559 arXiv: arXiv:astro-ph/9507014 Bibcode: 1995ApJ...455...96C Keywords: GALAXIES: DISTANCES AND REDSHIFTS; SURVEYS; Astrophysics E-Print: 20 uuencoded postscript pages (first part) with 12 figures (second part). Also available at http://www.dao.nrc.ca/DAO/SCIENCE/science.html and coming soon on a CFRS homepage. Accepted June 19, scheduled for Dec 10 issue of ApJ full text sources arXiv | ADS | data products NED (13) SIMBAD (6) CDS (3) Related Materials (12) Catalog: 2001yCat.7225....0L Part 1: 1995ApJ...455...50L Part 2: 1995ApJ...455...60L Part 3: 1995ApJ...455...75L Part 4: 1995ApJ...455...88H Part 6: 1995ApJ...455..108L Part 7: 1995MNRAS.276.1085H Part 8: 1996ApJ...461..534L Part 9: 1996MNRAS.278...95S Part 10: 1996ApJ...464...79S Part 11: 1996MNRAS.281..847T Part 12: 1997ApJ...481...49H
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