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A census of dense cores in the Taurus L1495 cloud from the Herschel Gould Belt Survey

hal.structure.identifierUniversity of California [Los Angeles] [UCLA]
dc.contributor.authorMARSH, K. A.
hal.structure.identifierJeremiah Horrocks Insitute
dc.contributor.authorKIRK, J. M.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorANDRE, Ph.
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorGRIFFIN, M. J.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorKÖNYVES, V.
hal.structure.identifierDépartement d'Astrophysique (ex SAP) [DAP]
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorPALMEIRIM, P.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMEN'SHCHIKOV, A.
hal.structure.identifierJeremiah Horrocks Institute for Mathematics, Physics and Astronomy [Preston]
dc.contributor.authorWARD-THOMPSON, D.
hal.structure.identifierIstituto di Astrofisica e Planetologia Spaziali - INAF [IAPS]
dc.contributor.authorBENEDETTINI, M.
dc.contributor.authorBRESNAHAN, D. W.
hal.structure.identifierDepartment of Physics and Astronomy [Victoria]
dc.contributor.authorDI FRANCESCO, J.
hal.structure.identifierIstituto di Astrofisica e Planetologia Spaziali - INAF [IAPS]
dc.contributor.authorELIA, D.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMOTTE, F.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
hal.structure.identifierDépartement d'Astrophysique (ex SAP) [DAP]
dc.contributor.authorPERETTO, N.
hal.structure.identifierFaculty of Informatics [Lugano]
dc.contributor.authorPEZZUTO, S.
hal.structure.identifierLaboratoire Pierre Aigrain [LPA]
dc.contributor.authorROY, A.
hal.structure.identifierHerzberg Institute of Astrophysics
dc.contributor.authorSADAVOY, S.
hal.structure.identifierUniversity Hospital of Cologne [Cologne]
hal.structure.identifierFORMATION STELLAIRE 2016
dc.contributor.authorSCHNEIDER, N.
hal.structure.identifierIstituto di Astrofisica e Planetologia Spaziali - INAF [IAPS]
dc.contributor.authorSPINOGLIO, L.
hal.structure.identifierSLAC National Accelerator Laboratory [SLAC]
dc.contributor.authorWHITE, G. J.
dc.date.issued2016-06-01
dc.identifier.issn0035-8711
dc.description.abstractEnWe present a catalogue of dense cores in a similar to 4 degrees x 2 degrees field of the Taurus star-forming region, inclusive of the L1495 cloud, derived from Herschel SPIRE and PACS observations in the 70 mu m, 160 mu m, 250 mu m, 350 mu m, and 500 mu m continuum bands. Estimates of mean dust temperature and total mass are derived using modified blackbody fits to the spectral energy distributions. We detect 525 starless cores of which similar to 10-20 per cent are gravitationally bound and therefore presumably prestellar. Our census of unbound objects is similar to 85 per cent complete for M \textgreater 0.015 M-circle dot in low-density regions (A(V) less than or similar to 5 mag), while the bound (prestellar) subset is similar to 85 per cent complete for M \textgreater 0.1 M-circle dot overall. The prestellar core mass function (CMF) is consistent with lognormal form, resembling the stellar system initial mass function, as has been reported previously. All of the inferred prestellar cores lie on filamentary structures whose column densities exceed the expected threshold for filamentary collapse, in agreement with previous reports. Unlike the prestellar CMF, the unbound starless CMF is not lognormal, but instead is consistent with a power-law form below 0.3 M-circle dot and shows no evidence for a low-mass turnover. It resembles previously reported mass distributions for CO clumps at low masses (M less than or similar to 0.3 M-circle dot). The volume density PDF, however, is accurately lognormal except at high densities. It is consistent with the effects of self-gravity on magnetized supersonic turbulence. The only significant deviation from lognormality is a high-density tail which can be attributed unambiguously to prestellar cores.
dc.language.isoen
dc.publisherOxford University Press (OUP): Policy P - Oxford Open Option A
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enA census of dense cores in the Taurus L1495 cloud from the Herschel Gould Belt Survey
dc.typeArticle de revue
dc.identifier.doi10.1093/mnras/stw301
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalMonthly Notices of the Royal Astronomical Society
bordeaux.page342--356
bordeaux.volume459
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01440144
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01440144v1
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