GASS: THE PARKES GALACTIC ALL-SKY SURVEY. I. SURVEY DESCRIPTION, GOALS, AND INITIAL DATA RELEASE
| Autor: | H. A. Ford, M. R. Calabretta, Brad K. Gibson, P. M. W. Kalberla, L. Dedes, Lister Staveley-Smith, Naomi McClure-Griffiths, Daniel J. Pisano, Jeremy Bailin, F. J. Lockman, Steven Janowiecki, K. Newton-McGee, Hiroyuki Nakanishi, Tara Murphy |
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| Rok vydání: | 2009 |
| Předmět: |
Physics
010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena media_common.quotation_subject Resolution (electron density) Astrophysics::Instrumentation and Methods for Astrophysics FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Astrophysics - Astrophysics of Galaxies 01 natural sciences Declination Radio telescope Space and Planetary Science Sky Astrophysics of Galaxies (astro-ph.GA) Magellanic Stream Brightness temperature 0103 physical sciences Angular resolution 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Noise (radio) media_common |
| Zdroj: | The Astrophysical Journal Supplement Series. 181:398-412 |
| ISSN: | 1538-4365 0067-0049 |
| DOI: | 10.1088/0067-0049/181/2/398 |
| Popis: | The Parkes Galactic All-Sky Survey (GASS) is a survey of Galactic atomic hydrogen (HI) emission in the Southern sky covering declinations $\delta \leq 1^{\circ}$ using the Parkes Radio Telescope. The survey covers $2\pi$ 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. Comment: 35 pages, 16 figures, accepted for publication in ApJS. Full resolution version available at ftp://ftp.atnf.csiro.au/pub/people/nmcclure/papers/GASS.1.ps.gz |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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