
doi: 10.1093/mnras/stae1179 , 10.60692/7p9mf-cwz41 , 10.60692/72kg7-s7s97 , 10.48550/arxiv.2405.00493
arXiv: 2405.00493
handle: 10138/578831
doi: 10.1093/mnras/stae1179 , 10.60692/7p9mf-cwz41 , 10.60692/72kg7-s7s97 , 10.48550/arxiv.2405.00493
arXiv: 2405.00493
handle: 10138/578831
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.
Planck, Astronomy, FOS: Physical sciences, Geometry, Astronomy, Space science, Astrophysics, ISM: clouds, Plane (geometry), surveys, Astronomical Instrumentation and Spectroscopy, FOS: Mathematics, Instrumentation, Solar and Stellar Astrophysics (astro-ph.SR), stars: formation, Galaxy Formation and Evolution in the Universe, Physics, Galactic plane, Adaptive Optics in Astronomy and Space Telescopes, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Atomic and Molecular Physics, and Optics, submillimetre: ISM, Galaxy, Astrophysics - Solar and Stellar Astrophysics, Physics and Astronomy, Astrophysics of Galaxies (astro-ph.GA), Physical Sciences, Space Telescopes, Mathematics
Planck, Astronomy, FOS: Physical sciences, Geometry, Astronomy, Space science, Astrophysics, ISM: clouds, Plane (geometry), surveys, Astronomical Instrumentation and Spectroscopy, FOS: Mathematics, Instrumentation, Solar and Stellar Astrophysics (astro-ph.SR), stars: formation, Galaxy Formation and Evolution in the Universe, Physics, Galactic plane, Adaptive Optics in Astronomy and Space Telescopes, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Atomic and Molecular Physics, and Optics, submillimetre: ISM, Galaxy, Astrophysics - Solar and Stellar Astrophysics, Physics and Astronomy, Astrophysics of Galaxies (astro-ph.GA), Physical Sciences, Space Telescopes, Mathematics
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