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Astronomy Colloquium
Dust in galaxies: extinction, attenuation and emission
Date: Thursday, April 29th
Time: 3:30 pm - 5:00 pm
Place: Virtual Zoom meeting - See Abstract, Coffee and Tea 3:30pm, Talk begins 3:45 PM
Speaker: Samir Salim, Indiana University
Abstract: I will review some recent results regarding the effect of the cosmic dust on the light we receive from galaxies. I will specifically discuss how the dust attenuation laws in galaxies are much more diverse than previously thought, emphasizing the need to try to understand the root causes of this diversity, especially since the incorrect assumptions about the dust properties result in systematic and random errors in the derivation of galaxy properties. I will also highlight that the complete understanding of the more complex question of dust attenuation is predicated on resolving some fundamental puzzles regarding the more basic phenomenon of dust extinction. I will also present some new results regarding the dust emission in the IR in the context of the upcoming JWST launch. Zoom Link:

Host: Snezana Stanimirovic
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