A study of Galactic Plane Planck Galactic cold clumps observed by SCOPE and the JCMT Plane Survey

Abstract

We have investigated the physical properties of Planck Galactic Cold Clumps (PGCCs) located in the Galactic Plane, using the JCMT Plane Survey (JPS) and the SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE) survey. By utilizing a suite of molecular-line surveys, velocities, and distances were assigned to the compact sources within the PGCCs, placing them in a Galactic context. The properties of these compact sources show no large-scale variations with Galactic environment. Investigating the star-forming content of the sample, we find that the luminosity-to-mass ratio (L/M) is an order of magnitude lower than in other Galactic studies, indicating that these objects are hosting lower levels of star formation. Finally, by comparing ATLASGAL sources that are associated or are not associated with PGCCs, we find that those associated with PGCCs are typically colder, denser, and have a lower L/M ratio, hinting that PGCCs are a distinct population of Galactic Plane sources.

Metadata

Item Type:	Article
Authors/Creators:	Eden, D.J. https://orcid.org/0000-0002-5881-3229 Liu, T. Moore, T.J.T. Di Francesco, J. Fuller, G. https://orcid.org/0000-0001-8509-1818 Kim, K.-T. Li, D. https://orcid.org/0000-0003-3010-7661 Liu, S.-Y. Plume, R. Tatematsu, K. https://orcid.org/0000-0002-8149-8546 Thompson, M.A. https://orcid.org/0000-0001-5392-909X Wu, Y. Bronfman, L. Butner, H.M. Currie, M.J. Garay, G. Goldsmith, P.F. Hirano, N. Johnstone, D. Juvela, M. Lai, S.-P. Lee, C.W. Mannfors, E.E. Olguin, F. Pattle, K. Park, G. Polychroni, D. Rawlings, M. Rigby, A.J. Sanhueza, P. Traficante, A. Urquhart, J.S. Weferling, B. White, G.J. Yadav, R.K.
Copyright, Publisher and Additional Information:	© 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords:	surveys, stars: formation, ISM: clouds, submillimetre: ISM
Dates:	Published: June 2024 Published (online): 2 May 2024 Accepted: 30 April 2024
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds)
Funding Information:	Funder Grant number STFC (Science and Technology Facilities Council) ST/W00125X/1 STFC (Science and Technology Facilities Council) ST/X001016/1
Depositing User:	Symplectic Publications
Date Deposited:	14 May 2024 13:37
Last Modified:	14 May 2024 13:37
Status:	Published
Publisher:	Oxford University Press
Identification Number:	10.1093/mnras/stae1179
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:212500

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