Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 181, Issue 2, Pages 398-412Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0067-0049/181/2/398
Keywords
galaxies: interactions; Galaxy: structure; ISM: general; Magellanic Clouds; radio lines: ISM; surveys
Categories
Funding
- NSF [AST0104439]
- NRAO
- ARC [DP0665973]
- Deutsche Forschungsgemeinschaft [KA1265/5-1]
- Commonwealth of Australia
- CSIRO
- Australian Research Council [DP0665973] Funding Source: Australian Research Council
- STFC [ST/F002432/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F002432/1] Funding Source: researchfish
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The Parkes Galactic All-Sky Survey (GASS) is a survey of Galactic atomic hydrogen (HI) emission in the Southern sky covering declinations delta <= 1 degrees using the Parkes Radio Telescope. The survey covers 2 pi steradians with an effective angular resolution of similar to 16', at a velocity resolution of 1.0 km s(-1), and with an rms brightness temperature noise of 57 mK. GASS is the most sensitive, highest angular resolution survey of Galactic Hi emission ever made in the Southern sky. In this paper, we outline the survey goals, describe the observations and data analysis, and present the first-stage data release. The data product is a single cube at full resolution, not corrected for stray radiation. Spectra from the survey and other data products are publicly available online.
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