The JCMT Plane Survey : First complete data release - emission maps and compact source catalogue
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Author
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 J
Buckle, J.
Brunt, Christopher 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, Gary P
Richer, J. S.
Weferling, B.
White, Glenn J.
Zhu, M.
Attention
2299/19111
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.