GBT23A-131

Measuring 12CO(1-0) emission in the Milky Way's Nuclear Wind

Abstract

The Milky Way is expelling large amounts of gas from its central regions through a kpc-scale, multiphase galactic wind. Recent CO(2-1) observations with APEX at 28'' angular resolution have demonstrated that individual molecular gas clouds entrained in the hot wind can be spatially resolved and studied on a parsec scale, opening up a new window on the detailed physical processes that occur within a galactic outflow. A full characterisation of molecular gas in the wind is the next step to explore the nature of these powerful phenomena. With this proposal, we request GBT time to map the CO(1-0) transition at a high angular resolution (7'') in two molecular regions in each of the two entrained clouds known to contain molecules. The main scientific goal is to determine excitation temperatures and spatial structures of molecular gas in the nuclear Galactic wind.

Investigators

Name	Institution
Toney Minter	Green Bank Observatory
Enrico Di Teodoro *	Firenze, Università degli Studi di
Jay Lockman	Green Bank Observatory
Naomi McClure-Griffiths	Australian National University
Natalie Butterfield	National Radio Astronomy Observatory; Green Bank Observatory; Iowa, University of; Villanova University
Lucia Armillotta	Princeton University

* indicates the PI