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dc.contributor.authorHINCELIN, U.,
dc.contributor.authorCOMMERCON, B.,
hal.structure.identifierAMOR 2016
dc.contributor.authorWAKELAM, Valentine
hal.structure.identifierECLIPSE 2016
dc.contributor.authorHERSANT, F.
hal.structure.identifierAMOR 2016
dc.contributor.authorGUILLOTEAU, S.
dc.contributor.authorHERBST, E.,
dc.date.issued2016-03
dc.identifier.issn0004-637X
dc.description.abstractEnThe first hydrostatic core, also called the first Larson core, is one of the first steps in low-mass star formation, as predicted by theory. With recent and future high performance telescopes, details of these first phases become accessible, and observations may confirm theory and even bring new challenges for theoreticians. In this context, we study from a theoretical point of view the chemical and physical evolution of the collapse of prestellar cores until the formation of the first Larson core, in order to better characterize this early phase in the star formation process. We couple a state-of-the-art hydrodynamical model with full gas-grain chemistry, using different assumptions on the magnetic field strength and orientation. We extract the different components of each collapsing core (i.e., the central core, the outflow, the disk, the pseudodisk, and the envelope) to highlight their specific physical and chemical characteristics. Each component often presents a specific physical history, as well as a specific chemical evolution. From some species, the components can clearly be differentiated. The different core models can also be chemically differentiated. Our simulation suggests some chemical species as tracers of the different components of a collapsing prestellar dense core, and as tracers of the magnetic field characteristics of the core. From this result, we pinpoint promising key chemical species to be observed.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.enAstrophysics - Astrophysics of Galaxies
dc.subject.enAstrophysics - Solar and Stellar Astrophysics
dc.title.enChemical and physical characterization of collapsing low-mass prestellar dense cores
dc.typeArticle de revue
dc.identifier.doi10.3847/0004-637X/822/1/12
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.identifier.arxiv1603.02529
bordeaux.journalThe Astrophysical Journal
bordeaux.pageid. 12
bordeaux.volume822
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01291154
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01291154v1
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