The gas reservoir around galaxies plays a fundamental, while still poorly understood, role in regulating the growth of galaxies, in establishing the scaling relation we observe among galaxies' physical properties as well as in modulating the escape of ionizing radiation from galaxies, and thus their contribution to the reionization process.

Particularly at the low mass end of the mass function, where most of the galaxies reside, the interplay between energy feedback and gas accretion is difficult to model and hard to pin-down observationally. In this talk I will present new observational results on the circumgalactic gas of local starburst galaxies. I will place particular emphasis on the uncertainties introduced on the derived physical properties of outflows by different modeling techniques and briefly discuss how future observations could help mitigate them. 

Speaker: Claudia Scarlata (University of Minnesota)

All 2023 Fall Colloquium talks are held on Wednesdays at 3:00 PM.  You may join the colloquium in person at STScI’s John N. Bahcall Auditorium or virtually or at the link listed below. 

• Facebook Link: https://www.facebook.com/watch/STScILiveScienceEvents 

Please direct questions or comments to contact above. The 2023 Fall Colloquium Committee members are: Suvi Gezari (STScI), Joel Green (STScI), Matilde Mingozzi (STScI), Nashwan Sabti (JHU), Kevin Schlaufman (JHU), Ethan Vishniak (JHU), John Wu (STScI)