Oct 17, 2013

Katherine Alatalo, Caltech

"Molecular gas, AGNs, star formation and galaxy evolution: a local look at galaxies undergoing the transition"

Speaker's website »

Understanding the evolution of galaxies from starforming blue cloud objects
into quiescent red sequence galaxies has been revolutionized by observations
taken with the Herschel Space Observatory, ALMA, and CARMA, allowing astronomers
to probe both the cold dust and cold ISM in a large set of galaxies, with
unprecedented sensitivity.  Observations of galaxies in molecular gas, cold dust
and the cool ISM (such as the [C II] line) have given us an unprecedented view of
the transition galaxies undergo togo from the blue starforming cloud to the red
sequence.  Specifically, I will discuss the role a compact group environment plays
in this transition, as well as discuss the unusual case of NGC1266, a local S0
galaxy that is expelling its interstellar medium at a rate of 50 Msuns/yr, over
100x the star formation rate.  These example systems have the potential to provide
local laboratories for understanding mechanisms that transition galaxies at higher
redshift, and put the roles of AGNs and mild interactions into the larger context
of galaxy evolution.

Event Details

Oct 17, 2013


4421 Sterling Hall

Coffee served at 3:30pm; talk starts at 3:45pm

Speaker Host:
Christy Tremonti

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