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