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28 March 2024
 
  » arxiv » astro-ph/0401353

 Article overview


The Team Keck Treasury Redshift Survey of the GOODS-North Field
Gregory D. Wirth ; Christopher N. A. Willmer ; Paola Amico ; Frederic H. Chaffee ; Robert W. Goodrich ; Shui Kwok ; James E. Lyke ; Jeff A. Mader ; Hien D. Tran ; Amy J. Barger ; Lennox L. Cowie ; Peter Capak ; Alison L. Coil ; Michael C. Cooper ; Al Conrad ; Marc Davis ; S. M. Faber ; Esther M. Hu ; David C. Koo ; David Le Mignant ; Jeffrey A. Newman ; Antoinette Songaila ;
Date 18 Dec 2003
Subject astro-ph
Affiliation3 and 4), Lennox L. Cowie , Peter Capak , Alison L. Coil , Michael C. Cooper , Al Conrad , Marc Davis , S. M. Faber , Esther M. Hu , David C. Koo , David Le Mignant , Jeffrey A. Newman , Antoinette Songaila ( W. M. Keck Observatory, UCO/Lick & UC Sa
AbstractWe report the results of an extensive imaging and spectroscopic survey in the GOODS-North field completed using DEIMOS on the Keck II telescope. Observations of 2018 targets in a magnitude-limited sample of 2911 objects to R=24.4 yield secure redshifts for a sample of 1440 galaxies and AGN plus 96 stars. In addition to redshifts and associated quality assessments, our catalog also includes photometric and astrometric measurements for all targets detected in our R-band imaging survey of the GOODS-North region. We investigate various sources of incompleteness and find the redshift catalog to be 53% complete at its limiting magnitude. The median redshift of z=0.65 is lower than in similar deep surveys because we did not select against low-redshift targets. Comparison with other redshift surveys in the same field, including a complementary Hawaii-led DEIMOS survey, establishes that our velocity uncertainties are as low as 40 km/s for red galaxies and that our redshift confidence assessments are accurate. The distributions of rest-frame magnitudes and colors among the sample agree well with model predictions out to and beyond z=1. We will release all survey data, including extracted 1-D and sky-subtracted 2-D spectra, thus providing a sizable and homogeneous database for the GOODS-North field which will enable studies of large scale structure, spectral indices, internal galaxy kinematics, and the predictive capabilities of photometric redshifts.
Source arXiv, astro-ph/0401353
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