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

Eden, D. J., Moore, T. J. T., Plume, R., Urquhart, J. S., Thompson, M. A., Parsons, H., Dempsey, J. T., Rigby, Andrew, Morgan, L. K., Thomas, H. S., Berry, D., Buckle, J., Brunt, C. M., Butner, H. M., Carretero, D., Chrysostomou, A., Currie, M. J., deVilliers, H. M., Fich, M., Gibb, A. G., Hoare, M. G., Jenness, T., Manser, G., Mottram, J. C., Natario, C., Olguin, F., Peretto, Nicolas, Pestalozzi, M., Polychroni, D., Redman, R. O., Salji, C., Summers, L. J., Tahani, K., Traficante, A., diFrancesco, J., Evans, A., Fuller, G. A., Johnstone, D., Joncas, G., Longmore, S. N., Martin, P. G., Richer, J. S., Weferling, B., White, G. J. 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. 10.1093/mnras/stx874

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Abstract

We present the first data release of the James Clerk Maxwell Telescope Plane Survey (JPS), the JPS Public Release 1. JPS is an 850-μm continuum survey of six fields in the northern inner Galactic plane in a longitude range of ℓ = 7°–63°, made with the Submillimetre Common-User Bolometer Array 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 7813 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 arcmin) emission, there is excellent correspondence with features in the 500-μm 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-μm sources, we find that 38 ± 1 per cent of sources show evidence of ongoing star formation. The JPS Public Release 1 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
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Uncontrolled Keywords: surveys – stars: formation – ISM: clouds – submillimetre: ISM
Publisher: Oxford University Press
ISSN: 0035-8711
Date of First Compliant Deposit: 12 June 2017
Date of Acceptance: 6 April 2017
Last Modified: 19 Sep 2019 10:58
URI: http://orca-mwe.cf.ac.uk/id/eprint/101362

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