Eden, DJ;
Liu, T;
Kim, KT;
Juvela, M;
Liu, SY;
Tatematsu, K;
Di Francesco, J;
... Jarken, E; + view all
(2019)
SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - Survey description and compact source catalogue.
Monthly Notices of the Royal Astronomical Society
, 485
(2)
pp. 2895-2908.
10.1093/mnras/stz574.
(In press).
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Abstract
We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850 μm continuum observations of 1235 Planck Galactic Cold Clumps (PGCCs) made with the Submillimetre Common-User Bolometer Array 2 on the James Clerk Maxwell Telescope. These data are at an angular resolution of 14.4 arcsec, significantly improving upon the 353 GHz resolution of Planck at 5 arcmin, and allowing for a catalogue of 3528 compact sources in 558 PGCCs. We find that the detected PGCCs have significant sub-structure, with 61 per cent of detected PGCCs having three or more compact sources, with filamentary structure also prevalent within the sample. A detection rate of 45 per cent is found across the survey, which is 95 per cent complete to Planck column densities of NH2 > 5 × 1021 cm−2. By positionally associating the SCOPE compact sources with young stellar objects, the star formation efficiency, as measured by the ratio of luminosity to mass, in nearby clouds is found to be similar to that in the more distant Galactic Plane, with the column density distributions also indistinguishable from each other.
| Type: | Article |
|---|---|
| Title: | SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - Survey description and compact source catalogue |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stz574 |
| Publisher version: | https://doi.org/10.1093/mnras/stz574 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | surveys, stars: formation, ISM: clouds, submillimetre: ISM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10077617 |
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