Gass: the Parkes Galactic All-sky Survey. I. Survey Description, Goals, and Initial Data Release
Year: 2009
Type: article
Abstract: The Parkes Galactic All-Sky Survey (GASS) is a survey of Galactic atomic hydrogen (HI) emission in the Southern sky covering declinations $δ\leq 1^{\circ}$ using the Parkes Radio Telescope. The survey covers $2π$ steradians with an effective angular resolution of ~16', at a velocity resolution of 1.0 km/s, 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.
Institutions: Commonwealth Scientific and Industrial Research Organisation, Australia Telescope National Facility, West Virginia University, National Radio Astronomy Observatory, Swinburne University of Technology, The University of Western Australia, University of Bonn, McMaster University, Indiana University Bloomington, Case Western Reserve University, Indiana University, University of Lancashire, The University of Sydney, Kagoshima University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G8782375067
OpenAlex ID: W1987477884