NOAO >   Observing Info >   Approved Programs >   2015A-0414

Small NOAO Logo

Program Information for 2015A-0414


PI: Jay Gallagher, U. of Wisconsin, Madison, jsg@astro.wisc.edu
Address: Astronomy Department, 475 N. Charter St., Madison, WI 53706 USA

CoI: Tova Yoast-Hull, U. of Wisconsin, Madison
CoI: Ellen Zweibel, U. of Wisconsin, Madison
CoI: Petri Vaisanen, SAAO

Title: Blowing Bubbles: The Extended Galactic Winds from ULIRGs

Abstract: Star formation in starbursts runs away in the sense that the dense populations of massive stars return huge amounts of power in the form of radiation fields, stellar winds and blast waves, and cosmic rays. Models and observations suggest that in less massive galaxies the power input into the ISM overwhelms cooling processes with the result of hot, outflowing galactic winds with multi-phase structures. The models further suggest and observations tend to support winds removing mass at rates comparable to the star formation rate. This apparently straightforward situation contains many details that are especially severe in the case of luminous, dusty (U)LIRG starbursts. How does gas escape the dense core? What are the photoionization levels and how does this radiation escape in dusty systems? What is the role of shocks? How do the kinematics of the denser gas that emits an HII spectrum vary with distance from the source. This proposal is part of a project to study the optical emission line spectra of outer winds in (U)LIRGs as a step towards answering these types of questions.

Program Type: WTAC

Scheduled Nights:
Run 1 (2015A):  WIYN/HEXPK -- 3n on Apr 17 - Apr 19 2015


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2015A-0414

noaoprop-help@noao.edu

Small NOAO Logo