Colloquium on 28 May 2015
Galaxies at Cosmic Dawn

Details

Title: Galaxies at Cosmic Dawn
Speaker: Michele Trenti (University of Melbourne, Australia)
Date: Thursday, 28 May 2015
Time: 11:00 - 12:00
Venue: 1896 Building

Abstract

In the last five years, Hubble Space Telescope observations taken with the new infrared camera transformed our view of early galaxy formation by building reliable samples of galaxies out to redshift z~8 (~700 Myr after the Big Bang, more than 13 Gyr ago), and by hinting at a dramatic evolution in properties at yet earlier times. I will present our existing data and combine them with spectroscopic followup observations to discuss the connection between dark-matter halos, assembly of galaxies, and reionization of hydrogen in the intergalactic medium. Finally, I will preview the first observations from a new campaign of Hubble imaging that I am leading with the goal of finding the most luminous galaxies present 500 Myr after the Big Bang.

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