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

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

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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.
Original languageEnglish
Pages (from-to)2163-2183
Number of pages24
JournalMonthly Notices of the Royal Astronomical Society
Volume469
Issue number2
Early online date11 Apr 2017
DOIs
Publication statusPublished - 1 Aug 2017

Keywords

  • surveys
  • stars: formation
  • ISM: clouds
  • submillimetre: ISM

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