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The unexpectedly large proportion of high-mass star-forming cores in a Galactic mini-starburst

hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorMOTTE, F.
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorNONY, T.
hal.structure.identifierUniversidad de Santiago de Chile [Santiago] [USACH]
dc.contributor.authorLOUVET, F.
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorMARSH, K. A.
hal.structure.identifierFORMATION STELLAIRE 2018
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
dc.contributor.authorBONTEMPS, Sylvain
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorWHITWORTH, A. P.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMEN'SHCHIKOV, A.
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
dc.contributor.authorLUONG, Q. Nguyen
hal.structure.identifierMax-Planck-Institut für Radioastronomie [MPIFR]
dc.contributor.authorCSENGERI, T.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMAURY, A. J.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorGUSDORF, A.
hal.structure.identifierAMOR 2018
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
dc.contributor.authorCHAPILLON, E.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorKÖNYVES, V.
hal.structure.identifierPhysikalisches Institut [Köln]
dc.contributor.authorSCHILKE, P.
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorDUARTE-CABRAL, A.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorDIDELON, P.
dc.contributor.authorGAUDEL, M.
dc.date.issued2018
dc.description.abstractEnUnderstanding the processes that determine the stellar Initial Mass Function (IMF) is a critical unsolved problem, with profound implications for many areas of astrophysics. In molecular clouds, stars are formed in cores, gas condensations which are sufficiently dense that gravitational collapse converts a large fraction of their mass into a star or small clutch of stars. In nearby star-formation regions, the core mass function (CMF) is strikingly similar to the IMF, suggesting that the shape of the IMF may simply be inherited from the CMF. Here we present 1.3 mm observations, obtained with ALMA, the world's largest interferometer, of the active star-formation region W43-MM1, which may be more representative of the Galactic-disk regions where most stars form. The unprecedented resolution of these observations reveals, for the first time, a statistically robust CMF at high masses, with a slope that is markedly shallower than the IMF. This seriously challenges our understanding of the origin of the IMF.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enThe unexpectedly large proportion of high-mass star-forming cores in a Galactic mini-starburst
dc.typeArticle de revue
dc.identifier.doi10.1038/s41550-018-0452-x
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.identifier.arxiv1804.02392
dc.description.sponsorshipEuropeA Gaia and Herschel Study of the Density Distribution and Evolution of Young Massive Star Clusters
dc.description.sponsorshipEuropeInterpreting Dust Polarization Maps to Characterize the Role of the Magnetic Field in Star Formation Processes
bordeaux.journalNature Astronomy
bordeaux.page478-482
bordeaux.volume2
bordeaux.peerReviewedoui
hal.identifierhal-01762416
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01762416v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Astronomy&rft.date=2018&rft.volume=2&rft.spage=478-482&rft.epage=478-482&rft.au=MOTTE,%20F.&NONY,%20T.&LOUVET,%20F.&MARSH,%20K.%20A.&BONTEMPS,%20Sylvain&rft.genre=article


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