Colloquia

Manuel Aravena: The properties and evolution of the molecular gas in massive star-forming galaxies at z=1-2

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The properties and evolution of the molecular gas in massive star-forming galaxies at z=1-2

Manuel Aravena
ESO

“A remarkable advance to understand the evolution of galaxies has been the determination of the cosmic star-formation rate (SFR) density of the Universe. This was found to steadily increase from redshift 5, with a peak at redshift~2, and steeply declines after redshhift=1. The population of galaxies that dominates the peak of cosmic star formation is composed by a mix of massive star-forming disks and interacting galaxies with typical SFRs ~ 100 Msun/yr. A major step to understand the properties of these galaxies has been the recent detection of substantial reservoirs of molecular gas in these galaxies, similar to that observed in hyper-luminous starbursts and quasars at redshift>2 but in galaxies forming stars at 10x lower rates.. I will show results on a deep ‘blind’ EVLA search for CO emission from star-forming galaxies in a galaxy overdensity at redshift~1.5.”

Location
Instituto de Astronomía’s seminar hall
Universidad Católica del Norte
Cómo llegar

Date
May, wednesday 16th 2012; 04:00pm.