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hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorCSENGERI, T.
hal.structure.identifierFORMATION STELLAIRE 2017
dc.contributor.authorBONTEMPS, Sylvain
hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorWYROWSKI, F.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorMOTTE, F.
hal.structure.identifierMillimeter and Submillimeter Astronomy
dc.contributor.authorMENTEN, K. M.
hal.structure.identifierMax-Planck-Institut für Astronomie [MPIA]
dc.contributor.authorBEUTHER, H.
hal.structure.identifierDepartamento de Astronomia [DAS]
dc.contributor.authorBRONFMAN, L.
hal.structure.identifierCentre de Recherche Astrophysique de Lyon [CRAL]
dc.contributor.authorCOMMERCON, B.
hal.structure.identifierAMOR 2017
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorCHAPILLON, E.
hal.structure.identifierSchool of Physics and Astronomy [Exeter]
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorDUARTE-CABRAL, A.
hal.structure.identifierJodrell Bank Centre for Astrophysics [JBCA]
dc.contributor.authorFULLER, G. A.
hal.structure.identifierMax-Planck-Institut für Astronomie [MPIA]
dc.contributor.authorHENNING, Th.
hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorLEURINI, S.
hal.structure.identifierAstrophysics Research Institute [Liverpool] [ARI]
dc.contributor.authorLONGMORE, S.
dc.contributor.authorPALAU, A.
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorPERETTO, N.
hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorSCHULLER, F.
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorTAN, J. C.
hal.structure.identifierEuropean Southern Observatory [ESO]
hal.structure.identifierINAF - Osservatorio Astrofisico di Arcetri [OAA]
dc.contributor.authorTESTI, L.
hal.structure.identifierIstituto di Astrofisica e Planetologia Spaziali - INAF [IAPS]
dc.contributor.authorTRAFICANTE, A.
hal.structure.identifierSchool of Physical Sciences, University of Kent
dc.contributor.authorURQUHART, J. S.
dc.date.issued2017-03
dc.identifier.issn0004-6361
dc.description.abstractEnThe early evolution of massive cluster progenitors is poorly understood. We investigate the fragmentation properties from 0.3 pc to 0.06 pc scales of a homogenous sample of infrared-quiet massive clumps within 4.5 kpc selected from the ATLASGAL survey. Using the ALMA 7m array we detect compact dust continuum emission towards all targets, and find that fragmentation, at these scales, is limited. The mass distribution of the fragments uncovers a large fraction of cores above 40 $M_\odot$, corresponding to massive dense cores (MDCs) with masses up to ~400 $M_\odot$. 77 % of the clumps contain at most 3 MDCs per clump, and we also reveal single clumps/MDCs. The most massive cores are formed within the more massive clumps, and a high concentration of mass on small scales reveals a high core formation efficiency. The mass of MDCs highly exceeds the local thermal Jeans-mass, and observational evidence is lacking for a sufficiently high level of turbulence or strong enough magnetic fields to keep the most massive MDCs in equilibrium. If already collapsing, the observed fragmentation properties with a high core formation efficiency are consistent with the collapse setting in at parsec scales.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.title.enALMA survey of massive cluster progenitors from ATLASGAL. Limited fragmentation at the early evolutionary stage of massive clumps
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201629754
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.subject.halPlanète et Univers [physics]
dc.identifier.arxiv1703.03273
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.L10
bordeaux.volume600
bordeaux.peerReviewedoui
hal.identifierhal-01489046
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01489046v1
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