Monday, October 03, 2011
4:00 PM -
5:00 PM
Cahill, Hameetman Auditorium
Astronomy Tea Talk
Series: Astronomy Tea Talks
Exploring the Gas-Cycle in High-Redshift Galaxies: A Joint Effort of Theory and Observations
Michele Fumagalli,
(UCSC) ,
Hydrodynamical cosmological simulations indicate that massive galaxies at high redshift are fed by extended streams of cold gas in a smooth component and in merging galaxies. At the same time, observations reveal that winds are ubiquitous in star forming systems. To investigate this balanced cycle of gas in high-redshift galaxies, I will present predictions of the neutral hydrogen distribution and Ly-alpha emission in simulated disks fed by cold-streams. I will then discuss the prospects of mapping the circumgalactic medium with absorption line systems or with imaging and spectroscopy in emission, presenting preliminary results from ongoing programs.
Event Sponsors:
For more information, please contact Gina Armas by phone at 4671 or by email at [email protected] or visit http://www.astro.caltech.edu/~gma/colloquia.html.