The Coordinated Radio and Infrared Survey for High-Mass Star Formation (The CORNISH Survey). I. Survey Design
| Autor: | S. Smethurst, Sean M. Dougherty, Ralph Spencer, Lee G. Mundy, José-María Martí, J. M. Paredes, Claire J. Chandler, Gary A. Fuller, Maggie A. Thompson, W. D. Cotton, Stuart Lumsden, Simon Garrington, T. W. B. Muxlow, G. Umana, P. J. Diamond, Jagadheep D. Pandian, Melvin Hoare, James M. Jackson, Rob Fender, P. F. Goldsmith, T. R. Gledhill, D. S. Shepherd, James Urquhart, Cormac Purcell, Stan Kurtz, Toby J. T. Moore, A. A. Zijlstra, Ed Churchwell, R. D. Oudmaijer |
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| Rok vydání: | 2012 |
| Předmět: |
Physics
Star formation Infrared Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Galactic plane Astrophysics - Astrophysics of Galaxies Declination Galaxy Jansky Hour angle Stars Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Astrophysics::Galaxy Astrophysics |
| Zdroj: | Publications of the Astronomical Society of the Pacific. 124:939-955 |
| ISSN: | 1538-3873 0004-6280 |
| Popis: | We describe the motivation, design and implementation of the CORNISH survey, an arcsecond resolution radio continuum survey of the inner Galactic plane at 5 GHz using the Karl G. Jansky Very Large Array (VLA). It is a blind survey co-ordinated with the northern Spitzer GLIMPSE I region covering 10 deg < l < 65 deg and |b| < 1 deg at similar resolution. We discuss in detail the strategy that we employed to control the shape of the synthesised beam across this survey that covers a wide range of fairly low declinations. Two snapshots separated by 4 hours in hour angle kept the beam elongation to less that 1.5 over 75% of the survey area and less than 2 over 98% of the survey. The prime scientific motivation is to provide an unbiased survey for ultra-compact HII regions to study this key phase in massive star formation. A sensitivity around 2 mJy will allow the automatic distinction between radio loud and quiet mid-IR sources found in the Spitzer surveys. This survey has many legacy applications beyond star formation including evolved stars, active stars and binaries, and extragalactic sources. The CORNISH survey for compact ionized sources complements other Galactic plane surveys that target diffuse and non-thermal sources as well as atomic and molecular phases to build up a complete picture of the ISM in the Galaxy. 17 pages, 14 figures. Accepted for publication in PASP (16th-August-2012) |
| Databáze: | OpenAIRE |
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