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Eden, D. J; Moore, T. J. T; Plume, R; Urquhart, J. S; Thompson, M. A; Parsons, H; Dempsey, J. T; Rigby, A. J; 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, N; 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; Zhu, M
Monthly notices of the Royal Astronomical Society, 08/2017, Volume: 469, Issue: 2Journal Article
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.
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