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The JCMT Plane Survey: First complete data release - emission maps and compact source catalogue

Eden, DJ and Moore, TJT and Plume, R and Urquhart, JS and Thompson, MA and Parsons, H and Dempsey, JT and Rigby, AJ and Morgan, LK and Thomas, HS and Berry, D and Buckle, J and Brunt, CM and Butner, HM and Carretero, D and Chrysostomou, A and Currie, MJ and deVilliers, HM and Fich, M and Gibb, AG and Hoare, MG and Jenness, T and Manser, G and Mottram, JC and Natario, C and Olguin, F and Peretto, N and Pestalozzi, M and Polychroni, D and Redman, RO and Salji, C and Summers, LJ and Tahani, K and Traficante, A and diFrancesco, J and Evans, A and Fuller, GA and Johnstone, D and Joncas, G and Longmore, SN and Martin, PG and Richer, JS and Weferling, B and White, GJ and Zhu, M (2017) The JCMT Plane Survey: First complete data release - emission maps and compact source catalogue. Monthly Notices of the Royal Astronomical Society, 469 (2). pp. 2163-2183. ISSN 0035-8711

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Abstract

We present the first data release of the James Clerk Maxwell Telescope (JCMT) Plane Survey (JPS), the JPS Public Release 1 (JPSPR1). JPS is an 850-um continuum survey of six fields in the northern inner Galactic Plane in a longitude range of l=7-63, made with the Sub-millimetre Common-User Bolometer Array 2 (SCUBA-2). This first data release consists of emission maps of the six JPS regions with an average pixel-to-pixel noise of 7.19 mJy beam^-1, when smoothed over the beam, and a compact-source catalogue containing 7,813 sources. The 95 per cent completeness limits of the catalogue are estimated at 0.04 Jy beam^-1 and 0.3 Jy for the peak and integrated flux densities, respectively. The emission contained in the compact-source catalogue is 42 +- 5 per cent of the total and, apart from the large-scale (greater than 8') emission, there is excellent correspondence with features in the 500-um Herschel maps. We find that, with two-dimensional matching, 98 +- 2 per cent of sources within the fields centred at l=20, 30, 40 and 50 are associated with molecular clouds, with 91 +- 3 per cent of the l=30 and 40 sources associated with dense molecular clumps. Matching the JPS catalogue to Herschel 70-um sources, we find that 38 +- 1 per cent of sources show evidence of ongoing star formation. The images and catalogue will be a valuable resource for studies of star formation in the Galaxy and the role of environment and spiral arms in the star formation process.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society Published by Oxford University Press on behalf of the Royal Astronomical Society.
Uncontrolled Keywords: astro-ph.GA; astro-ph.GA
Subjects: Q Science > QB Astronomy
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Related URLs:
Date Deposited: 13 Apr 2017 13:30
Last Modified: 13 Sep 2017 17:08
DOI or Identification number: 10.1093/mnras/stx874
URI: http://researchonline.ljmu.ac.uk/id/eprint/6262

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