A pilot study for the SCUBA-2 'All-Sky' Survey

Todd Mackenzie, Filiberto G. Braglia, Andy G. Gibb, Douglas Scott, Tim Jenness, Stephen Serjeant, Mark Thompson, David Berry, Christopher M. Brunt, Edward Chapin, A. Chrysostomou, Dave Clements, Kristen Coppin, Frossie Economou, A. Evans, Per Friberg, Jane Greaves, T. Hill, Wayne Holland, R. J. IvisonJohan H. Knapen, Neal Jackson, Gilles Joncas, Larry Morgan, Angela Mortier, Chris Pearson, Michele Pestalozzi, Alexandra Pope, John Richer, J. S. Urquhart, Mattia Vaccari, Bernd Weferling, Glenn White, Ming Zhu

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Abstract

We have carried out a pilot study for the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) 'All-Sky' Survey (SASSy), a wide and shallow mapping project at 850 mu m, designed to find rare objects, both Galactic and extragalactic. Two distinct sets of exploratory observations were undertaken and used to test the SASSy approach and data-reduction pipeline. The first was a 0 degrees.5 x 0 degrees.5 map around the nearby galaxy NGC 2559. The galaxy was easily detected at 156 mJy, but no other convincing sources are present in the map. Comparison with other galaxies with similar wavelength coverage indicates that NGC 2559 has relatively warm dust. The second observations cover 1 deg(2) around the W5-E H II region. As well as diffuse structure in the map, a filtering approach was able to extract 27 compact sources with signal-to-noise ratio greater than 6. By matching with data at other wavelengths we can see that the SCUBA-2 data can be used to discriminate the colder cores. Together these observations show that the SASSy project will be able to meet its original goals of detecting new bright sources which will be ideal for follow-up observations with other facilities.

Original languageEnglish
Pages (from-to)1950-1960
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Volume415
Issue number2
DOIs
Publication statusPublished - Aug 2011

Keywords

  • surveys
  • submillimetre: galaxies
  • submillimetre: stars

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