# Probing cosmic dawn: Ages and star formation histories of candidate z ≥ 9 galaxies

@article{Laporte2021ProbingCD,
title={Probing cosmic dawn: Ages and star formation histories of candidate z ≥ 9 galaxies},
author={Nicolas Laporte and Romain A. Meyer and R. S. Ellis and Brant E. Robertson and John Chisholm and Guido W. Roberts-Borsani},
journal={Monthly Notices of the Royal Astronomical Society},
year={2021}
}
• Published 16 April 2021
• Physics
• Monthly Notices of the Royal Astronomical Society
We discuss the spectral energy distributions and physical properties of six galaxies whose photometric redshifts suggest they lie beyond a redshift z ≃ 9. Each was selected on account of a prominent excess seen in the Spitzer/IRAC 4.5 $\mu$m band which, for a redshift above z = 9.0, likely indicates the presence of a rest-frame Balmer break and a stellar component that formed earlier than a redshift z ≃ 10. In addition to constraining the earlier star formation activity on the basis of fits…

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