Deep NICMOS Parallel Observations of Red Galaxies at z = 2

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We present deep near-infrared photometry of ˜200 square arcminutes of HST NICMOS parallel imaging, composed of more than 250 fields randomly distrubted across the sky. The average 5 σ depths reached are [F110W] = 24.7 and [F160W] = 24.0, in Vega magnitudes. We find approximately 250 galaxies for which [F110W] - [F160W] > 2.0. These sources are primarily a mix of dusty starburst galaxies, and passively evolving stellar systems between 1.5 < z < 2.5. We present a luminosity function for red galaxies at z ≈ 2 which is mostly unaffected by cosmic variance. We also discuss clustering properties of the sample.

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