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, 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.

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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.

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.