A Tour of Dust in (Simulated) Galaxies

Abstract: I last came to CU in 2015, and talked almost entirely about molecules in galaxies.  Now I'm 8 years older, and 8 years more esoteric: 2023 Desika is going to talk all about dust!  But seriously, dust is awesome.  It impacts almost every astrophysical observation that you make, is a critical ingredient to thermal balance in the ISM, and is used to trace obscured star formation at all redshifts.   I'll present the results from a new model for dust in galaxy simulations that we're pushing, talking about extinction, attenuation, dusty starbursts, and a super cool new model for PAHs.   And, just because all the cool kids are doing it, I'll have a few side tours into ultra-high-z JWST detections, and machine learning.