A candidate redshift z ≈ 10 galaxy and rapid changes in that population at an age of 500 Myr

R. J. Bouwens (), G. D. Illingworth, I. Labbe, P. A. Oesch, M. Trenti, C. M. Carollo, P. G. van Dokkum, M. Franx, M. Stiavelli, V. González, D. Magee and L. Bradley
Additional contact information
R. J. Bouwens: University of California Santa Cruz
G. D. Illingworth: University of California Santa Cruz
I. Labbe: Carnegie Observatories
P. A. Oesch: Institute for Astronomy, ETH Zurich, Zurich CH-8093, Switzerland
M. Trenti: University of Colorado, Center for Astrophysics and Space Astronomy
C. M. Carollo: Institute for Astronomy, ETH Zurich, Zurich CH-8093, Switzerland
P. G. van Dokkum: Yale University
M. Franx: Leiden Observatory, Leiden University
M. Stiavelli: Space Telescope Science Institute
V. González: University of California Santa Cruz
D. Magee: University of California Santa Cruz
L. Bradley: Space Telescope Science Institute

Nature, 2011, vol. 469, issue 7331, 504-507

Abstract: Early galaxy revealed in Hubble data An ultra-deep search through the full Hubble Ultra Deep Field data set has uncovered a galaxy with a redshift of z ≈ 10, equivalent to an age of only 500 million years after the Big Bang. The data also provide strong constraints on the volume density of galaxies — and hence the star formation rate — at this time. The authors conclude that the star formation rate increased by a factor of ten in the time between z ≈ 10 and z ≈ 8, implying that this period in the heart of the reionization epoch was one in which galaxies were evolving very rapidly.

Date: 2011
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DOI: 10.1038/nature09717

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