The VLA Galactic Plane Survey

Abstract

The VLA Galactic Plane Survey (VGPS) is a survey of HI and 21-cm continuum emission in the Galactic plane between longitude 18 degrees 67 degr. with latitude coverage from |b| < 1.3 degr. to |b| < 2.3 degr. The survey area was observed with the Very Large Array (VLA) in 990 pointings. Short-spacing information for the HI line emission was obtained by additional observations with the Green Bank Telescope (GBT). HI spectral line images are presented with a resolution of 1 arcmin x 1 arcmin x 1.56 km/s (FWHM) and rms noise of 2 K per 0.824 km/s channel. Continuum images made from channels without HI line emission have 1 arcmin (FWHM) resolution. VGPS images are compared with images from the Canadian Galactic Plane Survey (CGPS) and the Southern Galactic Plane Survey (SGPS). In general, the agreement between these surveys is impressive, considering the differences in instrumentation and image processing techniques used for each survey. The differences between VGPS and CGPS images are small, < 6 K (rms) in channels where the mean HI brightness temperature in the field exceeds 80 K. A similar degree of consistency is found between the VGPS and SGPS. The agreement we find between arcminute resolution surveys of the Galactic plane is a crucial step towards combining these surveys into a single uniform dataset which covers 90% of the Galactic disk: the International Galactic Plane Survey (IGPS). The VGPS data will be made available on the World Wide Web through the Canadian Astronomy Data Centre (CADC).

Accepted for publication in The Astronomical Journal. 41 pages, 13 figures. For information on data release, colour images etc. see http://www.ras.ucalgary.ca/VGPS

References in corpus (6)

• The Southern Galactic Plane Survey: HI Observations and Analysis
• The Southern Galactic Plane Survey: The Test Region
• The Synthesis Telescope at the Dominion Radio Astrophysical Observatory
• Discovery of a Population of HI Clouds in the Galactic Halo
• Compact HI clouds at high forbidden velocities in the inner Galaxy
• GSH23.0-0.7+117, a neutral hydrogen shell in the inner Galaxy

Cited by in corpus (269)

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• The GALFA-HI Survey: Data Release 1
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• Resolution of the Distance Ambiguity for Galactic HII Regions
• The Co-ordinated Radio and Infrared Survey for High Mass Star Formation (The CORNISH Survey) - I. Survey Design
• The Co-ordinated Radio and Infrared Survey for High-Mass Star Formation - II. Source Catalogue
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• ATLASGAL --- Environments of 6.7\,GHz methanol masers
• A Herschel [C II] Galactic plane survey II: CO-dark H2 in clouds
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• The Binary Companion of Young, Relativistic Pulsar J1906+0746
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• PSR J1907+0602: A Radio-Faint Gamma-Ray Pulsar Powering a Bright TeV Pulsar Wind Nebula
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• The Green Bank Telescope HII Region Discovery Survey: III. Kinematic Distances
• The Distance and Age of the SNR Kes 73 and AXP 1E 1841-045
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• THOR - The HI, OH, Recombination Line Survey of the Milky Way - The pilot study: HI observations of the giant molecular cloud W43
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