BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:1 UID:UW-Physics-Event-5085 DTSTART:20190425T203000Z DTEND:20190425T220000Z DTSTAMP:20260307T181001Z LAST-MODIFIED:20190320T125551Z LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 PM\, Talk begins 3:45 PM SUMMARY:The Central Engine and Outflows in the Nuclear Starburst of NG C 253 as Revealed by ALMA\, Astronomy Colloquium\, Albert Bollato\, Un iversity of Maryland DESCRIPTION:Starbursts are a rare phenomenon in the present day univer se\, but they represent perhaps 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 though t to be one of the main forms of regulation of galaxy growth. NGC 253 is the premier local example for a nuclear starburst\, and has been ta rgeted with several ALMA observations in order to study how these proc esses work. I will discuss the properties of the molecular outflow\, i ncluding our best constraints on the mass and outflow rate\, and the p roperties of the outflowing molecular gas. I will also present the res ults of our recent 1.7-pc resolution observations\, including the dete ction and properties of 14 compact structures with properties correspo nding to massive young star clusters and super star clusters\, 13 of w hich are so embedded that are invisible in optical and NIR observation s (the 14th is a known SSC). I will also discuss the evidence for feed back and disruption on the scales of these clusters. Finally\, I will present a preliminary analysis of the 0.5-pc resolution observations r ecently obtained.
\n URL:https://www.physics.wisc.edu/events/?id=5085 END:VEVENT END:VCALENDAR