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Elia, Davide, Merello, M, Molinari, S, Schisano, E, Zavagno, A, Russeil, D, Mege, P, Martin, PG, Olmi, L, Pestalozzi, M, Plume, R, Ragan, SE, Benedettini, M, Eden, DJ, Moore, TJT, Noriega-Crespo, A, Paladini, R, Palmeirim, P, Pezzuto, S, Pilbratt, GL , Rygl, KLJ, Schilke, P, Strafella, F, Tan, JC, Traficante, A, Baldeschi, A, Bally, J, di Giorgio, AM, Fiorellino, E, Liu, SJ, Piazzo, L and Polychroni, D (2021) The Hi-GAL compact source catalogue - II. The 360 degrees catalogue of clump physical properties. Monthly Notices of the Royal Astronomical Society, 504 (2). pp. 2742-2766. ISSN 0035-8711
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The Hi-GAL compact source catalogue II the 360 degree catalogue of clump physical properties.pdf - Published Version Download (8MB) | Preview |
Abstract
We present the 360° catalogue of physical properties of Hi-GAL compact sources, detected between 70 and 500 μm. This release not only completes the analogous catalogue previously produced by the Hi-GAL collaboration for −71° ≲ ℓ ≲ 67°, but also meaningfully improves it because of a new set of heliocentric distances, 120 808 in total. About a third of the 150 223 entries are located in the newly added portion of the Galactic plane. A first classification based on detection at 70 μm as a signature of ongoing star-forming activity distinguishes between protostellar sources (23 per cent of the total) and starless sources, with the latter further classified as gravitationally bound (pre-stellar) or unbound. The integral of the spectral energy distribution, including ancillary photometry from λ = 21 to 1100 μm, gives the source luminosity and other bolometric quantities, while a modified blackbody fitted to data for λ≥160 μm yields mass and temperature. All tabulated clump properties are then derived using photometry and heliocentric distance, where possible. Statistics of these quantities are discussed with respect to both source Galactic location and evolutionary stage. No strong differences in the distributions of evolutionary indicators are found between the inner and outer Galaxy. However, masses and densities in the inner Galaxy are on average significantly larger, resulting in a higher number of clumps that are candidates to host massive star formation. Median behaviour of distance-independent parameters tracing source evolutionary status is examined as a function of the Galactocentric radius, showing no clear evidence of correlation with spiral arm positions.
| Item Type: | Article |
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| Additional Information: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 The Autor(s)] Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
| Uncontrolled Keywords: | Astronomy & Astrophysics; COMPLETE SAMPLE; DARK CLOUDS; DUST PROPERTIES; dust, extinction; GALACTIC PLANE; INFRARED SURVEY; infrared: ISM; ISM: clouds; local interstellar matter; MASSIVE STAR-FORMATION; MILKY-WAY; MOLECULAR CLOUDS; OUTER GALAXY; Physical Sciences; Science & Technology; SPECTRAL ENERGY-DISTRIBUTION; Stars: formation; submillimeter: ISM; Science & Technology; Physical Sciences; Astronomy & Astrophysics; Stars: formation; ISM: clouds; dust, extinction; local interstellar matter; infrared: ISM; submillimeter: ISM; MASSIVE STAR-FORMATION; SPECTRAL ENERGY-DISTRIBUTION; GALACTIC PLANE; MOLECULAR CLOUDS; MILKY-WAY; COMPLETE SAMPLE; OUTER GALAXY; DUST PROPERTIES; INFRARED SURVEY; DARK CLOUDS; Science & Technology; Physical Sciences; Astronomy & Astrophysics; Stars: formation; ISM: clouds; dust, extinction; local interstellar matter; infrared: ISM; submillimeter: ISM; MASS STAR-FORMATION; SPECTRAL ENERGY-DISTRIBUTION; GALACTIC PLANE; MOLECULAR CLOUDS; MILKY-WAY; CO SURVEY; SUBMILLIMETER EMISSION; COMPLETE SAMPLE; INFRARED SURVEY; OUTER GALAXY; Astronomy & Astrophysics; 0201 Astronomical and Space Sciences |
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Astrophysics Research Institute |
| Publisher: | Royal Astronomical Society |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 08 Nov 2022 15:51 |
| Last Modified: | 08 Nov 2022 16:00 |
| DOI or ID number: | 10.1093/mnras/stab1038 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/18076 |
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