Physics & Astronomy Colloquium - Dr. Alison Crocker - Reed College

Dartmouth Events

Physics & Astronomy Colloquium - Dr. Alison Crocker - Reed College

Title: "Explaining the Diversity in the "end state" of Galactic Evolution"

Friday, September 16, 2016
Wilder 104
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract: Early-type galaxies (elliptical and lenticular galaxies) are high-entropy stellar systems, all galaxies will eventually tend toward such states (perhaps sped up by interactions with other galaxies). Many early-type galaxies are also high-entropy gaseous systems, essentially with hot gas atmospheres maintained by energy input from their central super-massive black hole, not entirely differently than how central nuclear reactions support stars. However, some early-type galaxies still contain low-entropy, cold gas. In these cases, the galaxies are not quite in an ``end state”. I will discuss possible evolutionary pathways and physical processes that explain how some early-type galaxies still have cold gas reservoirs.

For more information, contact:
Tressena Manning

Events are free and open to the public unless otherwise noted.