The Arizona CDFS Environment Survey (ACES): A Magellan/IMACS Spectroscopic Survey of the Chandra Deep Field-South

Michael C. Cooper, Renbin Yan, Mark Dickinson, Stéphanie Juneau, Jennifer M. Lotz, Jeffrey A. Newman, Casey Papovich, Samir Salim, Gregory Walth, Benjamin J. Weiner, Christopher N.A. Willmer

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


We present the Arizona CDFS Environment Survey (ACES), a recently completed spectroscopic redshift survey of the Chandra Deep Field-South (CDFS) conducted using the Inamori-Magellan Areal Camera and Spectrograph on the Magellan-Baade telescope. In total, the survey targeted 7277 unique sources down to a limiting magnitude of RAB = 24.1, yielding 5080 secure redshifts across the ∼30arcmin × 30arcmin extended CDFS region. The ACES data set delivers a significant increase to both the spatial coverage and the sampling density of the spectroscopic observations in the field. Combined with previously published spectroscopic redshifts, ACES now creates a highly complete survey of the galaxy population at R < 23, enabling the local galaxy density (or environment) on relatively small scales (∼1Mpc) to be measured at z < 1 in one of the most heavily studied and data-rich fields in the sky. Here, we describe the motivation, design and implementation of the survey and present a preliminary redshift and environment catalogue. In addition, we utilize the ACES spectroscopic redshift catalogue to assess the quality of photometric redshifts from both the COMBO-17 and Multiwavelength Survey by Yale-Chile imaging surveys of the CDFS.

Original languageEnglish (US)
Pages (from-to)2116-2127
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
StatePublished - Sep 21 2012


  • Catalogues
  • Galaxies: distances and redshifts
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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