A panoramic view of the Milky Way HI gas

2009/10/30 by Kalberla, Peter M. W., McClure-Griffiths, N. M., Kerp, J.
#Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences

paper · doi:10.48550/arxiv.0910.5910

Abstract

Imaging of galaxies to study the interstellar medium on scales of a few pc is difficult. However, for the Milky Way galaxy two major Galactic all sky HI 21-cm line surveys will become available soon with unprecedented quality. We present the Galactic All Sky Survey (GASS) obtained with the Parkes 64-m telescope for the southern hemisphere with a resolution of 15 arcmin. The Effelsberg Bonn HI Survey (EBHIS) will complete the survey for the northern sky with 9 arcmin resolution and we describe this project. A combined All Sky Survey will become available in 2010/2011, early enough to serve as short spacing information for ASKAP. We envision a Galactic 21-cm line database with arcsecond resolution for all declinations <30 deg.

Related

• The Effelsberg-Bonn HI Survey: Milky Way data
• The Effelsberg Bonn H I Survey (EBHIS)
• GASS: THE PARKES GALACTIC ALL-SKY SURVEY. I. SURVEY DESCRIPTION, GOALS, AND INITIAL DATA RELEASE
• GASKAP -- A Galactic Spectral Line Survey with the Australian Square Kilometre Array Pathfinder
• The Billion Galaxy Cosmological HI Large Deep Survey