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

Journal Article · Thu Nov 20 00:00:00 EST 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/796/1/60· OSTI ID:22369995

Hsu, Li-Ting; Salvato, Mara; Nandra, Kirpal; Brusa, Marcella; Bender, Ralf; Buchner, Johannes; Brightman, Murray; Georgakakis, Antonis ^[1]; Donley, Jennifer L. ^[2]; Kocevski, Dale D. ^[3]; Guo, Yicheng; Barro, Guillermo; Faber, Sandra M. ^[4]; Hathi, Nimish P. ^[5]; Rangel, Cyprian ^[6]; Willner, S. P.; Ashby, Matthew L. N. ^[7]; Budavári, Tamás; Szalay, Alexander S. ^[8]; Dahlen, Tomas ^[9] ; others, and

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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)

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.

• OSTI ID: 22369995
• Journal Information: Astrophysical Journal, Vol. 796, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

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