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Young massive star ...
Young massive star cluster formation in the Galactic Centre is driven by global gravitational collapse of high-mass molecular clouds
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- Barnes, Ashley T. (author)
- Universität Bonn,University of Bonn,Liverpool John Moores University,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Longmore, S. (author)
- Liverpool John Moores University
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- Avison, A (author)
- University of Manchester
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- Contreras, Y. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Ginsburg, A. (author)
- National Radio Astronomy Observatory Socorro
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- Henshaw, Jonathan D. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Rathborne, J. M. (author)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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- Walker, D. L. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA),National Astronomical Observatory of Japan
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- Alves, J. (author)
- Universität Wien,University of Vienna
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- Bally, J. (author)
- University of Colorado at Boulder
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- Battersby, C. (author)
- University of Connecticut
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- Beltrán, M. T. (author)
- Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory
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- Beuther, H. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Garay, G. (author)
- Universidad de Chile (UCH),University of Chile (UCH)
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- Gomez, L. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA)
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- Jackson, J. M. (author)
- NASA Ames Research Center
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- Kainulainen, Jouni, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Kruijssen, J. M. D. (author)
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- Lu, X. (author)
- National Astronomical Observatory of Japan
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- Mills, E. A. C. (author)
- Brandeis University
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- Ott, J. (author)
- National Radio Astronomy Observatory Socorro
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- Peters, T. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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(creator_code:org_t)
- 2019-03-19
- 2019
- English.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 486:1, s. 283-303
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Abstract
Subject headings
Close
- Young massive clusters (YMCs) are the most compact, high-mass stellar systems still forming at the present day. The precursor clouds to such systems are, however, rare due to their large initial gas mass reservoirs and rapid dispersal time-scales due to stellar feedback. None the less, unlike their high-z counterparts, these precursors are resolvable down to the sites of individually forming stars, and hence represent the ideal environments in which to test the current theories of star and cluster formation. Using high angular resolution (1 arcsec / 0.05 pc) and sensitivity ALMA observations of two YMC progenitor clouds in the Galactic Centre, we have identified a suite of molecular line transitions - e.g. c-C3H2 (7 - 6) - that are believed to be optically thin, and reliably trace the gas structure in the highest density gas on star-forming core scales. We conduct a virial analysis of the identified core and proto-cluster regions, and show that half of the cores (5/10) and both proto-clusters are unstable to gravitational collapse. This is the first kinematic evidence of global gravitational collapse in YMC precursor clouds at such an early evolutionary stage. The implications are that if these clouds are to form YMCs, then they likely do so via the 'conveyor-belt' mode, whereby stars continually form within dispersed dense gas cores as the cloud undergoes global gravitational collapse. The concurrent contraction of both the cluster-scale gas and embedded (proto-)stars ultimately leads to the high (proto-)stellar density in YMCs.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- ISM: clouds
- Galaxy: centre
- stars: formation
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Barnes, Ashley T ...
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Longmore, S.
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Avison, A
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Contreras, Y.
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Ginsburg, A.
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Henshaw, Jonatha ...
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show more...
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Rathborne, J. M.
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Walker, D. L.
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Alves, J.
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Bally, J.
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Battersby, C.
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Beltrán, M. T.
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Beuther, H.
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Garay, G.
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Gomez, L.
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Jackson, J. M.
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Kainulainen, Jou ...
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Kruijssen, J. M. ...
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Lu, X.
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Mills, E. A. C.
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Ott, J.
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Peters, T.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
- Articles in the publication
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Monthly Notices ...
- By the university
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Chalmers University of Technology