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A Blind Test of Photometric Redshift Prediction

Hogg, David W. and Cohen, Judith G. and Blandford, Roger and Gwyn, Stephen D. J. and Hartwick, F. D. A. and Mobasher, B. and Mazzei, Paula and Sawicki, Marcin and Lin, Huan and Yee, H. K. C. and Connolly, Andrew J. and Brunner, Robert J. and Csabai, Istvan and Dickinson, Mark and SubbaRao, Mark U. and Szalay, Alexander S. and Fernandez-Soto, Alberto and Lanzetta, Kenneth M. and Yahil, Amos (1998) A Blind Test of Photometric Redshift Prediction. Astronomical Journal, 115 (4). pp. 1418-1422. ISSN 0004-6256. doi:10.1086/300277.

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Results of a blind test of photometric redshift predictions against spectroscopic galaxy redshifts obtained in the Hubble Deep Field with the Keck Telescope are presented. The best photometric redshift schemes predict spectroscopic redshifts with a redshift accuracy of Δz < 0.1 for more than 68% of sources and with Δz < 0.3 for 100%, when single-feature spectroscopic redshifts are removed from consideration. This test shows that photometric redshift schemes work well, at least when the photometric data are of high quality and when the sources are at moderate redshifts.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Hogg, David W.0000-0003-2866-9403
Cohen, Judith G.0000-0002-8039-4673
Blandford, Roger0000-0002-1854-5506
Sawicki, Marcin0000-0002-7712-7857
Dickinson, Mark0000-0001-5414-5131
Additional Information:© 1998. The American Astronomical Society. Received 1997 July 17; revised 1998 January 7. The HDF team, led by Bob Williams, are thanked for planning, taking, reducing, and making public the beautiful HST images of the HDF, as are Len Cowie and the Hawaii group for confirming some originally uncertain redshifts. D. W. H. thanks the Canadian Institute for Theoretical Astrophysics for hospitality. Support from the NSF and NASA is gratefully acknowledged, including NSF grant AST 95-29170, and HST data analysis grant AR-06337.12-94A and Hubble Fellowship grant HF-01093.01-97A, both from the Space Telescope Science Institute (operated by AURA, Inc., under NASA contract NAS 5-26555).
Funding AgencyGrant Number
NSFAST 95-29170
NASA Hubble FellowshipHF-01093.01-97A
NASANAS 5-26555
Subject Keywords:galaxies: distances and redshifts; galaxies: photometry; methods: miscellaneous; techniques: photometric; techniques: spectroscopic
Issue or Number:4
Record Number:CaltechAUTHORS:20190529-103832799
Persistent URL:
Official Citation:David W. Hogg et al 1998 AJ 115 1418
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95862
Deposited By: George Porter
Deposited On:29 May 2019 21:30
Last Modified:16 Nov 2021 17:16

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