Mortier, Angela M. J., Serjeant, Stephen, Dunlop, James S., Scott, S.E., Ade, P., Alexander, D.M., Almaini, O., Aretxaga, Itziar, Baugh, C., Benson, Andrew J., and others. (2005) The SCUBA half-degree extragalactic survey - I. Survey motivation, design and data processing. Monthly Notices of the Royal Astronomical Society, 363 (2). pp. 563-580. ISSN 0035-8711. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:11797)
| The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. |
Abstract
The Submillimetre Common-User Bolometer Array ( SCUBA) Half-Degree Extragalactic Survey ( SHADES) is a major new blank-field extragalactic submillimetre (submm) survey currently underway at the James Clerk Maxwell Telescope (JCMT). Ultimately, SHADES aims to cover half a square degree at 450 and 850 mu m to a 4 sigma depth of similar or equal to 8 mJy at 850 mu m. Two fields are being observed, the Subaru/XMM-Newton Deep Field (SXDF) (02(h)18(m) - 05 degrees.) and the Lockman Hole East (10(h)52(m) + 57 degrees). The survey has three main aims: (i) to investigate the population of high-redshift submm galaxies and the cosmic history of massive dust-enshrouded star formation activity; (ii) to investigate the clustering properties of submm-selected galaxies in order to determine whether these objects could be progenitors of present-day massive ellipticals; and (iii) to investigate the fraction of submm-selected sources that harbour active galactic nuclei. To achieve these aims requires that the submm data be combined with cospatial information spanning the radio-to-X-ray frequency range. Accordingly, SHADES has been designed to benefit from ultra-deep radio imaging obtained with the Very Large Array (VLA), deep mid-infrared observations from the Spitzer Space Telescope, submm mapping by the Balloon-borne Large Aperture Submillimetre Telescope ( BLAST), deep near-infrared imaging with the United Kingdom Infrared Telescope, deep optical imaging with the Subaru Telescope and deep X-ray observations with the XMM-Newton observatory. It is expected that the resulting extensive multiwavelength data set will provide complete photometric redshift information accurate to delta(z) <= 0.5 as well as detailed spectral energy distributions for the vast majority of the submm-selected sources. In this paper, the first of a series on SHADES, we present an overview of the motivation for the survey, describe the SHADES survey strategy, provide a detailed description of the primary data-analysis pipeline and demonstrate the superiority of our adopted matched-filter source-extraction technique over, for example, Emerson-II style methods. We also report on the progress of the survey. As of 2004 February, 720 arcmin(2) had been mapped with SCUBA ( about 40 per cent of the anticipated final total area) to a median 1 sigma depth of 2.2 mJy per beam at 850 mu m (25 mJy per beam at 450 mu m), and the source-extraction routines give a source density of 650 +/- 50 sources de(g-)2 > 3 sigma at 850 mu m. Although uncorrected for Eddington bias, this source density is more than sufficient for providing enough sources to answer the science goals of SHADES, once half a square degree is observed. A refined reanalysis of the original 8-mJy survey Lockman hole data was carried out in order to evaluate the new data-reduction pipeline. Of the 17 most secure sources in the original sample, 12 have been reconfirmed, including 10 of the 11 for which radio identifications were previously secured.
| Item Type: | Article |
|---|---|
| Additional information: | 126 BLACKWELL PUBLISHING 972GB |
| Uncontrolled keywords: | galaxies : evolution; galaxies : formation; galaxies : starburst; cosmology : observations; infrared : galaxies; submillimetre DEEP SUBMILLIMETER SURVEY; STAR-FORMATION HISTORY; CLERK-MAXWELL-TELESCOPE; SPITZER-SPACE-TELESCOPE; SPECTRAL ENERGY-DISTRIBUTIONS; HIERARCHICAL GALAXY FORMATION; REDSHIFT DUSTY GALAXIES; INFRARED ARRAY CAMERA; FLUX-DENSITY RATIO; 14 HOUR FIELD |
| Subjects: | Q Science |
| Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
| Depositing User: | Maggie Francis |
| Date Deposited: | 11 Sep 2008 15:23 UTC |
| Last Modified: | 05 Nov 2024 09:45 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/11797 (The current URI for this page, for reference purposes) |
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