Feedback & Self-Regulation in Star Formation: The Driver of the Galactic Ecology
Friday April 21, 2017
|Presenter:||Prof. John Bally, Astrophysical and Planetary Sciences, CU Boulder|
|Series:||Physics and Astronomy Colloquium|
|Abstract:||The energy and momentum injected by forming stars into the surrounding interstellar medium (ISM)limits the star formation efficiency, the fraction of the parent cloud’s mass converted into stars. I will describe the “feedback ladder” of ever more powerful processes which drive the “Galactic ecology”; protostellar outflows, soft-UV, ionizing-UV, radiation pressure, stellar winds, and explosive transients such as supernovae. I will argue that chaotic N-body dynamics and feedback dominate the properties of the stars, clusters, and associations produced by the star formation process.|
|Web Site:||Bally et al. 2017, arXiv170101906B|
|Location:||Room 125, Dane Smith Hall|
Refreshments will be available before the colloquium, at 3:45 pm, in the lobby of Dane Smith Hall.