Journal article

PROBING THE DAWN OF GALAXIES AT z similar to 9-12: NEW CONSTRAINTS FROM HUDF12/XDF AND CANDELS DATA

PA Oesch, RJ Bouwens, GD Illingworth, I Labbe, M Franx, PG van Dokkum, M Trenti, M Stiavelli, V Gonzalez, D Magee

The Astrophysical Journal | IOP PUBLISHING LTD | Published : 2013

Abstract

We present a comprehensive analysis of z > 8 galaxies based on ultra-deep WFC3/IR data. We exploit all the WFC3/IR imaging over the Hubble Ultra-Deep Field from the HUDF09 and the new HUDF12 program, in addition to the HUDF09 parallel field data, as well as wider area imaging over GOODS-South. Galaxies are selected based on the Lyman break technique in three samples centered around z ∼ 9, z ∼ 10, and z ∼ 11, with seven z ∼ 9 galaxy candidates, and one each at z ∼ 10 and z ∼ 11. We confirm a new z ∼ 10 candidate (with z = 9.8 ± 0.6) that was not convincingly identified in our first z ∼ 10 sample. Using these candidates, we perform one of the first estimates of the z ∼ 9 UV luminosity function..

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University of Melbourne Researchers

Grants

Awarded by NASA through Hubble Fellowship


Awarded by NASA


Funding Acknowledgements

We thank the anonymous referee for very constructive comments to improve our paper. Support for this work was provided by NASA through Hubble Fellowship Grant HF-51278.01 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. Additionally, this work has been supported by NASA Grants NAG5-7697 and HST-GO-11563.01.Based on data obtained with the Hubble Space Telescope operated by AURA, Inc., for NASA under contract NAS5-26555.