Tracing the Baryon Cycle at the Disk-Halo Interface

Erin Boettcher (U Chicago)
Friday, September 18, 2020 - 2:00pm to 3:00pm

The gaseous interfaces between galactic disks and the circumgalactic medium are critical boundaries in the baryon cycle. These interfaces are imprinted with structural, chemical, and kinematic clues about the processes driving galaxy growth and evolution across cosmic time. I will discuss optical emission-line studies of the dynamical state of gaseous, disk-halo interfaces in the local universe and their implications for baryon cycling between disks and halos. At higher redshift, I will consider gaseous interfaces from another angle by exploring insights from the CUBS program into the diversity of galactic environments in which dense and potentially star-forming gas is found. The talk will conclude with prospects for connecting kpc-scale feedback phenomena at the disk-halo interface to 100-kpc-scale observations of the circumgalactic medium.

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