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Photometric Redshifts of Galaxies in the Hubble Deep Field · arXivDesk

astro-ph/9709166Sep 17, 199721 pages, LaTex, 9 figures, to be published in The Hubble Deep Field, proceedings of the Space Telescope Science Institute 1997 May Symposium, ed. M. Livio, S. M. Fall, and P. Madau

Photometric Redshifts of Galaxies in the Hubble Deep Field

Kenneth M. Lanzetta, Alberto Fernandez-Soto, Amos Yahil

astro-ph

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Abstract

We describe our application of broad-band photometric redshift techniques to faint galaxies in the Hubble Deep Field. To magnitudes AB(8140) < 26, the accuracy of the photometric redshifts is a few tenths and the reliability of the photometric redshifts approaches 100%. At fainter magnitudes the effects of photometric error on the photometric redshifts can be rigorously quantified and accounted for. We argue that broad-band photometric redshift techniques can be applied to accurately and reliably estimate redshifts of galaxies that are up to many magnitudes fainter than the spectroscopic limit.

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