Intermediate Redshift Galaxies in the Hubble Ultra Deep Field

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Scientific paper

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Scientific paper

We present an emission line catalog derived from the GRAPES slitless spectroscopy for the Hubble Ultra Deep Field. By combining these emission lines with photometric redshifts, we derive a catalog of precise redshifts for all the strong emission line galaxies in the UDF. We supplement this catalog with other galaxies having redshifts z < 1.5 based on other features in the grism spectra (primarily 4000A breaks). We then examine physical and population properties of this sample, including line luminosity functions, derived star formation rates as a function of redshift, and constraints on metallicities and on nuclear activity.

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