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Published April 1998 | Published + Accepted Version
Journal Article Open

A Blind Test of Photometric Redshift Prediction


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.

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).

Attached Files

Published - Hogg_1998_AJ_115_1418.pdf

Accepted Version - 9801133


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