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ALMA-IMF. I. Investigating the origin of stellar masses: Introduction to the Large Program and first results

hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorMOTTE, Frédérique
hal.structure.identifierFEMIS 2021
dc.contributor.authorBONTEMPS, Sylvain
hal.structure.identifierFEMIS 2021
dc.contributor.authorCSENGERI, Timéa
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorPOUTEAU, Yohan
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorLOUVET, Fabien
hal.structure.identifierUniversidad de Concepción = University of Concepción [Chile] [UdeC]
hal.structure.identifierMax-Planck-Institut für Astronomie = Max Planck Institute for Astronomy [MPIA]
dc.contributor.authorSTUTZ, Amelia
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorCUNNINGHAM, Nichol
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorLÓPEZ-SEPULCRE, Ana
hal.structure.identifierFEMIS 2021
dc.contributor.authorBROUILLET, Nathalie
hal.structure.identifierInstituto de Radioastronomía y Astrofísica [Mexico] [IRyA]
dc.contributor.authorGALVÁN-MADRID, Roberto
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorGINSBURG, Adam
hal.structure.identifierEuropean Southern Observatory [ESO]
dc.contributor.authorMAUD, Luke
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMEN’SHCHIKOV, Alexander
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
hal.structure.identifierGraduate University for Advanced Studies [Hayama] [SOKENDAI]
dc.contributor.authorNAKAMURA, Fumitaka
hal.structure.identifierInstituto de Radioastronomía y Astrofísica [Mexico] [IRyA]
dc.contributor.authorNONY, Thomas
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
hal.structure.identifierGraduate University for Advanced Studies [Hayama] [SOKENDAI]
dc.contributor.authorSANHUEZA, Patricio
hal.structure.identifierUniversidad de Concepción = University of Concepción [Chile] [UdeC]
dc.contributor.authorÁLVAREZ-GUTIÉRREZ, Rodrigo
hal.structure.identifierAstrophysique
hal.structure.identifierObservatoire de Paris
dc.contributor.authorARMANTE, Mélanie
hal.structure.identifierS. N. Bose National Centre for Basic Sciences
dc.contributor.authorBAUG, Tapas
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBONFAND, Melisse
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
hal.structure.identifierInstitut de Ciencies de l'Espai [Barcelona] [ICE-CSIC]
hal.structure.identifierInstitut d'Estudis Espacials de Catalunya [IEEC-CSIC]
dc.contributor.authorBUSQUET, Gemma
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorCHAPILLON, Edwige
hal.structure.identifierInstituto de Radioastronomía y Astrofísica [Mexico] [IRyA]
dc.contributor.authorDÍAZ-GONZÁLEZ, Daniel
hal.structure.identifierInstituto Argentino de Radioastronomia [IAR]
dc.contributor.authorFERNÁNDEZ-LÓPEZ, Manuel
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
dc.contributor.authorGUZMÁN, Andrés
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorHERPIN, Fabrice
hal.structure.identifierUniversidad de Concepción = University of Concepción [Chile] [UdeC]
hal.structure.identifierYunnan University
dc.contributor.authorLIU, Hong-Li
hal.structure.identifierNational Tsing Hua University [Hsinchu] [NTHU]
dc.contributor.authorOLGUIN, Fernando
hal.structure.identifierUniversity of Florida [Gainesville] [UF]
dc.contributor.authorTOWNER, Allison
hal.structure.identifierDepartment of Astrophysical and Planetary Sciences [Boulder]
dc.contributor.authorBALLY, John
hal.structure.identifierUniversity of Connecticut [Storrs] [UCONN]
dc.contributor.authorBATTERSBY, Cara
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBRAINE, Jonathan
hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorBRONFMAN, Leonardo
hal.structure.identifierNational Tsing Hua University [Hsinchu] [NTHU]
dc.contributor.authorCHEN, H.-R. V.
hal.structure.identifierAstrophysique
dc.contributor.authorDELL'OVA, Pierre
hal.structure.identifierNational Research Council of Canada [NRC]
dc.contributor.authorDI FRANCESCO, James
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorGONZÁLEZ, Marta
hal.structure.identifierAstrophysique
dc.contributor.authorGUSDORF, Antoine
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorHENNEBELLE, Patrick
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
hal.structure.identifierIbaraki University
hal.structure.identifierInstitute of Astronomy and Astrophysics [Taipei] [ASIAA Sinica]
dc.contributor.authorIZUMI, Natsuko
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorJONCOUR, Isabelle
hal.structure.identifierNational Taiwan Normal University [NTNU]
dc.contributor.authorLEE, Yueh-Ning
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorLEFLOCH, Bertrand
hal.structure.identifierAstrophysique
dc.contributor.authorLESAFFRE, Pierre
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorLU, Xing
hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorMENTEN, Karl
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMIGNON-RISSE, Raphaël
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorMOLET, Jordan
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorMORAUX, Estelle
hal.structure.identifierUniversity of Maryland [College Park] [UMD]
dc.contributor.authorMUNDY, Lee
hal.structure.identifierThe American University of Paris [AUP]
dc.contributor.authorNGUYEN LUONG, Quang
hal.structure.identifierMARine Biodiversity Exploitation and Conservation - MARBEC [UMR MARBEC]
dc.contributor.authorREYES, Nastassia
hal.structure.identifierMax Planck Institute for Radio Astronomy
hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorREYES, Nicolas
hal.structure.identifierUniversidad de Concepción = University of Concepción [Chile] [UdeC]
dc.contributor.authorREYES REYES, S. D.
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorROBITAILLE, Jean-François
hal.structure.identifierUniversity of Alberta
dc.contributor.authorROSOLOWSKY, Erik
hal.structure.identifierUniversidad de Concepción = University of Concepción [Chile] [UdeC]
dc.contributor.authorSANDOVAL-GARRIDO, Nicolas Antonio
hal.structure.identifierMax Planck Institute for Radio Astronomy
hal.structure.identifierLeibniz-Institut für Astrophysik Potsdam [AIP]
dc.contributor.authorSCHULLER, Frédéric
hal.structure.identifierNational Radio Astronomy Observatory [Socorro] [NRAO]
dc.contributor.authorSVOBODA, Brian
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
dc.contributor.authorTATEMATSU, Ken'Ichi
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorTHOMASSON, Benjamin
hal.structure.identifierUniversity of Connecticut [Storrs] [UCONN]
dc.contributor.authorWALKER, Daniel
hal.structure.identifierNational Astronomical Observatory of Japan [NAOJ]
hal.structure.identifierNVIDIA Research [Austin]
dc.contributor.authorWU, Benjamin
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorWHITWORTH, Anthony
hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorWYROWSKI, Friedrich
dc.date.issued2022
dc.identifier.issn0004-6361
dc.description.abstractEnAims. Thanks to the high angular resolution, sensitivity, image fidelity, and frequency coverage of ALMA, we aim to improve our understanding of star formation. One of the breakthroughs expected from ALMA, which is the basis of our Cycle 5 ALMA-IMF Large Program, is the question of the origin of the initial mass function (IMF) of stars. Here we present the ALMA-IMF protocluster selection, first results, and scientific prospects.Methods. ALMA-IMF imaged a total noncontiguous area of ~53 pc2, covering extreme, nearby protoclusters of the Milky Way. We observed 15 massive (2.5 −33 × 103 M⊙), nearby (2−5.5 kpc) protoclusters that were selected to span relevant early protocluster evolutionary stages. Our 1.3 and 3 mm observations provide continuum images that are homogeneously sensitive to point-like cores with masses of ~0.2 M⊙ and ~0.6 M⊙, respectively, with a matched spatial resolution of ~2000 au across the sample at both wavelengths. Moreover, with the broad spectral coverage provided by ALMA, we detect lines that probe the ionized and molecular gas, as well as complex molecules. Taken together, these data probe the protocluster structure, kinematics, chemistry, and feedback over scales from clouds to filaments to cores.Results. We classify ALMA-IMF protoclusters as Young (six protoclusters), Intermediate (five protoclusters), or Evolved (four proto-clusters) based on the amount of dense gas in the cloud that has potentially been impacted by H II region(s). The ALMA-IMF catalog contains ~700 cores that span a mass range of ~0.15 M⊙ to ~250 M⊙ at a typical size of ~2100 au. We show that this core sample has no significant distance bias and can be used to build core mass functions (CMFs) at similar physical scales. Significant gas motions, which we highlight here in the G353.41 region, are traced down to core scales and can be used to look for inflowing gas streamers and to quantify the impact of the possible associated core mass growth on the shape of the CMF with time. Our first analysis does not reveal any significant evolution of the matter concentration from clouds to cores (i.e., from 1 pc to 0.01 pc scales) or from the youngest to more evolved protoclusters, indicating that cloud dynamical evolution and stellar feedback have for the moment only had a slight effect on the structure of high-density gas in our sample. Furthermore, the first-look analysis of the line richness toward bright cores indicates that the survey encompasses several tens of hot cores, of which we highlight the most massive in the G351.77 cloud. Their homogeneous characterization can be used to constrain the emerging molecular complexity in protostars of high to intermediate masses.Conclusions. The ALMA-IMF Large Program is uniquely designed to transform our understanding of the IMF origin, taking the effects of cloud characteristics and evolution into account. It will provide the community with an unprecedented database with a high legacy value for protocluster clouds, filaments, cores, hot cores, outflows, inflows, and stellar clusters studies.
dc.description.sponsorshipGENeration et Evolution des Structures du milieu InterStellaire - ANR-16-CE92-0035
dc.description.sponsorshipL'origine de la masse des étoiles dans des nuages hiérarchiques en effondrement - ANR-20-CE31-0009
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enstars: formation
dc.subject.enstars: luminosity function
dc.subject.enmass function
dc.subject.enstars: protostars
dc.subject.enISM: clouds
dc.subject.enevolution
dc.subject.enH II regions
dc.title.enALMA-IMF. I. Investigating the origin of stellar masses: Introduction to the Large Program and first results
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202141677
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA8
bordeaux.volume662
bordeaux.peerReviewedoui
hal.identifierhal-03683790
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03683790v1
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