The Study of Galaxy Formation in the Near-Infrared at z~2-3

Event Date: 

Wednesday, June 5, 2013 - 4:00pm

Event Location: 

  • Broida 3302

Event Contact: 

Crystal Martin

Astrophysics Seminar


Kristin Kulas (UCLA)

The epoch of z~2-3 is a noticeably more active time in our universe for galaxies, with the global star-formation rate density at its peak. Many internal and external processes such as large-scale outflows from star formation activity, inflows from cool gas, mergers, and environment can alter the properties (e.g. structure, metallicity, star-formation rate, velocity dispersion) and evolution of galaxies. In the rest-frame optical many important diagnostic lines exist that allow one to study galaxy properties, including the Balmer series, [OIII]?5007, and [NII]?6584. Once you reach z~2-3, however, these lines have become very faint and have shifted into the near-infrared wavelength regime. As a consequence of this, near-IR spectroscopy on a large telescope plays an integral role in studying high-redshift galaxies. I will discuss several studies utilizing infrared observations, including new results from MOSFIRE, that examine how gas supplies are regulated during galaxy formation at z~2-3.