GBT24B-314

GBT HI follow-up observations for THOR-GC

Abstract

Based on the success of the THOR survey (The HI, OH, Recombination Line survey of the Milky Way; Beuther et al., 2016), we conducted an extension of THOR with the VLA to the Galactic Center (THOR-GC; 18 deg > l > -6 deg, |b| <= 1.25 deg) to study the interstellar medium and star formation in the extreme conditions of the Galactic Center. In particular, we measured the HI 21 cm line to address physical properties and dynamics of the atomic gas. Here, we propose GBT HI observations to obtain short-spacing information for this successfully observed VLA project THOR-GC (Project ID: 20A-160). The large longitude coverage enables studies of gas flows from the Galactic bar region to the central molecular zone. In combination with recent CO surveys (e.g., the SEDIGISM survey) and simulations, we will study the formation of molecular clouds and effects of stellar feedback.

Investigators

Name	Institution
Michael Rugel *	National Radio Astronomy Observatory; Max-Planck-Institut für Astronomie; Max-Planck-Institut für Radioastronomie
Jay Lockman	Green Bank Observatory
Loren Anderson	West Virginia University
Thomas Henning	Max-Planck-Institut für Astronomie
Sergio Dzib	Max-Planck-Institut für Radioastronomie; México, Universidad Nacional Autónoma de
Henrik Beuther	Max-Planck-Institut für Astronomie
Paul Goldsmith	Jet Propulsion Laboratory
Ashley Barnes	European Southern Observatory
Andreas Brunthaler	Max-Planck-Institut für Radioastronomie
Simon Glover	Heidelberg, Universität
Ralf Klessen	Heidelberg, Universität
Eric Koch	Alberta, University of; Smithsonian Astrophysical Observatory
Jeroen Stil	Calgary, University of
James Urquhart	Australia Telescope National Facility ; Max-Planck-Institut für Radioastronomie; Kent, University of
H Perry Hatchfield	Connecticut, University of
Mattia Sormani	Insubria, Università degli Studi dell'Insubria
Juergen Ott	National Radio Astronomy Observatory
Qizhou Zhang	Center for Astrophysics | Harvard & Smithsonian

* indicates the PI