March 24, 2020

Speaker: Alberto Bolatto

Contact Information: bolatto@astro.umd.edu

Title: The Central Engine and Galactic Outflow in the Nuclear Starburst of NGC 253

Abstract: Starbursts are a rare phenomenon in the present-day universe, but they are representative of the most common mode under which stars form and galaxies grow during the z~1-2 peak of cosmic star formation activity. Feedback, in the form of galaxy-scale outflows, is thought to be one of the main forms of regulation of galaxy growth. NGC 253 is the premier local example for a nuclear starburst and the target of several ALMA observations in order to study how these processes work. I will discuss the properties of the molecular outflow, including our best constraints on the mass and outflow rate, and the properties of the outflowing molecular gas. I will also present the results of our ALMA observations down to 0.5pc resolution, including the detection and properties of two dozen compact structures corresponding to massive young star clusters and super star clusters, most of which are extremely young, deeply embedded and invisible in optical and NIR observations. I will also discuss the evidence for feedback and fast parent cloud disruption on the scales of these clusters.

Visit Schedule:

Tuesday (March 24, 2020)

(visitor room: TBD )

  • 10:30 a.m.: Coffee & refreshments (Peyton Hall, common room)

  • 11:00 a.m.: Colloquium (Peyton Hall, auditorium)

  • 12:15 p.m.: Bahcall Lunch (Jadwin Hall, Joe Henry Room)

  • 1:30 p.m.:

  • 2:00 p.m.:

  • 2:30 p.m.:

  • 3:00 p.m.: Tea with graduate students3:30 p.m.:

  • 4:00 p.m.:

  • 4:30 p.m.:

  • 5:00 p.m.:

  • 5:30 p.m.:

  • 6:00 p.m.: DINNER WITH HOST

Joint Dinner with IAS scheduled for TBD

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

1. Speaker: Alberto Bolatto

2. Faculty host:

3. Postdoc host:

4.

5.

6.

7.

8.

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