A panoramic view of the Milky Way HI gas

Details A panoramic view of the Milky Way HI gas A panoramic view of the Milky Way HI gas

2009-10-30

arxiv.org/abs/0910.5910v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

4 pages, 1 figure, in proceedings of "Panoramic Radio Astronomy: Wide-field 1-2 GHz research on galaxy evolution - PRA2009"

Scientific paper

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.

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