N. M. McClure-Griffiths et al. 2009 ApJS 181 398 doi:10.1088/0067-0049/181/2/398
N. M. McClure-Griffiths1, D. J. Pisano2,12, M. R. Calabretta1, H. Alyson Ford1,3, Felix J. Lockman2, L. Staveley-Smith4, P. M. W. Kalberla5, J. Bailin6, L. Dedes5, S. Janowiecki2,7,13, B. K. Gibson8, T. Murphy9,10, H. Nakanishi11 and K. Newton-McGee1,9
Show affiliationsThe Parkes Galactic All-Sky Survey (GASS) is a survey of Galactic atomic hydrogen (H I) emission in the Southern sky covering declinations δ ≤ 1° 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-1, and with an rms brightness temperature noise of 57 mK. GASS is the most sensitive, highest angular resolution survey of Galactic H I 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.
galaxies: interactions; Galaxy: structure; ISM: general; Magellanic Clouds; radio lines: ISM; surveys
Issue 2 (2009 April)
Received 2008 October 21, accepted for publication 2009 January 14
Published 2009 March 12
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