Astronomy Colloquium for 2022-03-30


Series: Astronomy Colloquium
Date: Wednesday 30-Mar-2022
Time: 16:05-17:00 (4:05-5:00 pm)
Location: ATL 2400
Speaker: Dr. Ulrich Steinwandel (Flatiron Institute)
Title: Advances in galaxy formation through numerical simulations

Recent numerical simulations of galaxy formation have begun to model the details of the interstellar medium (ISM) in evermore detail. This includes accurate treatments for hydrodynamical flows with accurate mixing behavior, non-equlibrium cooling and chemistry, as well as the feedback of massive stars in terms of their UV-radiation, photoelectric heating rate and supernova-feedback. The most recent iterations of these models are capable to self-consistently follow the build-up of the hot phase and the momentum of the ISM by resolving the Sedov-Taylor phase of individual supernova events. In my talk I will present results from the GRIFFIN stellar feedback model that is designed for treating the ISM at solar mass and sub-parsec resolution in global simulations of galactic discs to properly study the build-up of resolved galaxy outflows. These state-of-the-art simulations of galactic outflows allow for the first time for an accurate comparison with observed outflows and can heavily contribute to a better theoretical understanding of outflows by providing us with detailed wind loading factors across different mass scales based on a model that can resolve the details of wind launching self-consistently.


Colloquia for the Fall 2020 semester will be held on zoom. Contact Dr. Leslie Sage for details.

Colloquium Organizer: Dr. Leslie Sage

SPECIAL ACCOMMODATIONS:

Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.

DIRECTIONS, PARKING, AND OTHER INFORMATION FOR VISITORS

Directions and information about parking can be found here.

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