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Title: CANDELS/GOODS-S, CDFS, and ECDFS: photometric redshifts for normal and X-ray-detected galaxies

We present photometric redshifts and associated probability distributions for all detected sources in the Extended Chandra Deep Field South (ECDFS). This work makes use of the most up-to-date data from the Cosmic Assembly Near-IR Deep Legacy Survey (CANDELS) and the Taiwan ECDFS Near-Infrared Survey (TENIS) in addition to other data. We also revisit multi-wavelength counterparts for published X-ray sources from the 4 Ms CDFS and 250 ks ECDFS surveys, finding reliable counterparts for 1207 out of 1259 sources (∼96%). Data used for photometric redshifts include intermediate-band photometry deblended using the TFIT method, which is used for the first time in this work. Photometric redshifts for X-ray source counterparts are based on a new library of active galactic nuclei/galaxy hybrid templates appropriate for the faint X-ray population in the CDFS. Photometric redshift accuracy for normal galaxies is 0.010 and for X-ray sources is 0.014 and outlier fractions are 4% and 5.2%, respectively. The results within the CANDELS coverage area are even better, as demonstrated both by spectroscopic comparison and by galaxy-pair statistics. Intermediate-band photometry, even if shallow, is valuable when combined with deep broadband photometry. For best accuracy, templates must include emission lines.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ; ; ;  [4] ;  [5] ;  [6] ; ;  [7] ; ;  [8] ;  [9] more »; « less
  1. Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany)
  2. Los Alamos National Laboratory, Los Alamos, NM (United States)
  3. Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States)
  4. UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA (United States)
  5. Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, F-13388 Marseille (France)
  6. Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ (United Kingdom)
  7. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  8. Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD (United States)
  9. Space Telescope Science Institute, Baltimore, MD (United States)
Publication Date:
OSTI Identifier:
22369995
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 796; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; DISTRIBUTION; EMISSION; GALAXY NUCLEI; INFRARED SURVEYS; NEAR INFRARED RADIATION; PHOTOMETRY; PROBABILITY; RED SHIFT; STATISTICS; WAVELENGTHS; X RADIATION; X-RAY GALAXIES; X-RAY SOURCES