title: A galactic chimney in the Perseus arm of the Milky Way.
abstract: Galaxies are surrounded by large haloes of hot gas which must be replenished as the gas cools. This has led to the concept of galactic 'chimneys'--cavities in the interstellar medium, created by multiple supernova explosions, that can act as conduits for the efficient transport of hot gas from a galaxy's disk to its halo. Here we present a high-resolution map of atomic hydrogen in the Perseus arm of our galaxy, which shows clear evidence for the existence of such a chimney. This chimney appears to have been formed by the energetic winds from a cluster of young massive stars, and may currently have reached the stage of bowing out into the halo.
authors.affiliation: Department of Physics and Astronomy, University of Calgary, Alberta, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Normandeau
authors.forename: A R
authors.initials: AR
authors.lastname: Taylor
authors.forename: P E
authors.initials: PE
authors.lastname: Dewdney
mesh_terms: D055580:Astronomical Phenomena; D001256:Astronomy; D002248:Carbon Monoxide; D005118:Extraterrestrial Environment; D006859:Hydrogen; D010865:Pilot Projects; D013057:Spectrum Analysis
chemical_list: D002248:Carbon Monoxide; D006859:Hydrogen