Department of Physics & Astronomy
University of New Mexico

Physics and Astronomy Colloquium

Feedback & Self Regulation in Star Formation: Driver of the Galactic Ecology

Presented by Professor John Bally, Astrophysical and Planetary Sciences, University of Colorado, Boulder

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.

4:00 pm, Friday, April 21, 2017
Room 125, Dane Smith Hall
Southwest corner of Las Lomas and Yale, Albuquerque, New Mexico

Refreshments will not be available at this event, in the lobby of Dane Smith Hall.

Disability NoticeIndividuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact Sandra Ortiz (phone: 505-277-5900, email: well in advance to ensure your needs are accomodated. Event handouts can be provided in alternative accessible formats upon request. Please contact Mrs. Ortiz if you need written information in an alternative format.

A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at