Northern Galactic Molecular Cloud Clumps in Hi-GAL: Clump and Star Formation within Clouds
| Autor: | Erika Zetterlund, Jason Glenn, Erik Rosolowsky |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
010308 nuclear & particles physics Star formation Molecular cloud Extinction (astronomy) FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Free-fall time Galactic plane Astrophysics - Astrophysics of Galaxies 01 natural sciences Virial theorem 13. Climate action Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Disc 010303 astronomy & astrophysics Mass fraction Astrophysics::Galaxy Astrophysics |
| DOI: | 10.48550/arxiv.1907.00150 |
| Popis: | We investigate how the properties of Galactic giant molecular clouds (GMCs) and their denser substructures (clumps) correlate with the local star formation rate. We trace clouds using the $^{12}$CO(3-2) transition, as observed by the CO High Resolution Survey (COHRS). We identify their constituent clumps using thermal dust emission, as observed by the Herschel infrared GALactic plane survey (Hi-GAL). We estimate star formation rates in these clouds using 70 $\mu$m emission. In total, we match 3,674 clumps to 473 clouds in position-position-velocity space spanning the Galactic longitude range $10^\circ Comment: Accepted to ApJ |
| Databáze: | OpenAIRE |
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