October 22, 2019

Speaker: Emily Levesque

Contact Information: emsque@uw.edu

Title: Red Supergiants: New Perspectives on Dying Stars

Abstract: Red supergiants (RSGs) are the helium-fusing descendants of moderately massive (10-25Mo) stars. As the coldest and largest (in physical size) members of the massive star population, these evolved stars serve as ideal "magnifying glasses" for scrutinizing our current understanding of massive stars and their role as supernova progenitors. RSGs are the observationally-confirmed progenitors of Type II-P, an intermediate evolutionary phase in the lifetimes of some stripped-envelope SN progenitors, and a crucial step in the formation and population statistics of massive interacting binaries (including those that will ultimately produce compact object binaries and gravitational waves). This talk will provide an overview of our field's current knowledge of RSGs, identify some of the most pressing open questions about these stars and their role as supernova progenitors, and consider the importance of RSGs in the coming decade as the next generation of observatories comes online.

Visit Schedule:

**Monday** (Oct 21, 2019)

(visitor room: 123 )

10:30 a.m.: Astro Coffee
11:00 a.m.: Neta Bahcall (137)
11:30 a.m.: Adam Burrows (Peyton Rm. 105)
12:00 p.m.: Roohi Dalal (Peyton 031)
12:30 p.m.: Wunch (Peyton 033)
2:00 p.m.: Josh Winn (Peyton 125)
2:30 p.m.: Luke Bouma (Peyton 023)
3:00 p.m.: Michael Strauss (Peyton 113)
3:30 p.m.: Renyue Cen (Peyton 111)
4:00 p.m.:
4:30 p.m.: Goni Halevi (015)
5:00 p.m.: Lachlan Lancaster (032)
5:30 p.m.: Sean Johnson (103)
6:00 p.m.: DINNER WITH HOST - meet in Grand Central

Dinner Sign-up (grad students & postdocs are encouraged; 8 MAX) - add your name here:

1. Speaker: Emily Levesque

2. Faculty host: Neta Bahcall

3. Postdoc host: Sean Johnson

4. Goni

5. Roohi Dalal

6. Lachlan Lancaster

NO MORE THAN 8 PEOPLE (otherwise it is very difficult to properly interact with the speaker)