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Evolution of interstellar dust with Herschel. First results in the photodissociation regions of NGC 7023

hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorABERGEL, A.
dc.contributor.authorARAB, H.
dc.contributor.authorCOMPIÈGNE, M.
dc.contributor.authorKIRK, J. M.
dc.contributor.authorADE, P.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorANDERSON, L. D.
hal.structure.identifierLaboratoire d'Informatique de Nantes Atlantique [LINA]
dc.contributor.authorANDRÉ, P.
dc.contributor.authorBALUTEAU, J.-P.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorBERNARD, J.-P.
dc.contributor.authorBLAGRAVE, K.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorBONTEMPS, Sylvain
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorBOULANGER, F.
dc.contributor.authorCOHEN, M.
dc.contributor.authorCOX, P.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorDARTOIS, E.
hal.structure.identifierDepartment of Ecology and Evolutionary Biology [Princeton]
dc.contributor.authorDAVIS, G.
dc.contributor.authorEMERY, R.
dc.contributor.authorFULTON, T.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorGRY, C.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorHABART, E.
hal.structure.identifierNational Astronomical Observatories [Beijing] [NAOC]
dc.contributor.authorHUANG, M.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorJOBLIN, C.
dc.contributor.authorJONES, S. C.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorLAGACHE, Guilaine
dc.contributor.authorLIM, T.
hal.structure.identifierDépartement d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée [DAPNIA]
dc.contributor.authorMADDEN, S.
dc.contributor.authorMAKIWA, G.
hal.structure.identifierCITA
dc.contributor.authorMARTIN, P.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorMIVILLE-DESCHÊNES, M.-A.
hal.structure.identifierIstituto di Fisica dello Spazio Interplanetario [IFSI]
dc.contributor.authorMOLINARI, S.
dc.contributor.authorMOSELEY, H.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorMOTTE, F.
dc.contributor.authorNAYLOR, D.
dc.contributor.authorOKUMURA, K.
dc.contributor.authorPINHEIRO GONÇALVES, D.
dc.contributor.authorPOLEHAMPTON, E.
dc.contributor.authorRODON, J.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorRUSSEIL, D.
hal.structure.identifierIstituto di Fisica dello Spazio Interplanetario [IFSI]
dc.contributor.authorSARACENO, P.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorSAUVAGE, M.
dc.contributor.authorSIDHER, S.
dc.contributor.authorSPENCER, L.
dc.contributor.authorSWINYARD, B.
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorWARD-THOMPSON, D.
hal.structure.identifierEngineering Department
dc.contributor.authorWHITE, G. J.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
hal.structure.identifierObservatoire Astronomique de Marseille Provence [OAMP]
dc.contributor.authorZAVAGNO, Annie
dc.date.issued2010-07
dc.identifier.issn0004-6361
dc.description.abstractEnContext. In photodissociation regions (PDRs), the physical conditions and the excitation evolve on short spatial scales as a function of depth within the cloud, providing a unique opportunity to study how the dust and gas populations evolve with the excitation and physical conditions. The mapping of the PDRs in NGC 7023 performed during the science demonstration phase of Herschel is part of the “Evolution of interstellar dust” key program. The goal of this project is to build a coherent database on interstellar dust emission from diffuse clouds to the sites of star formation. Aims: We study the far-infrared/submillimeter emission of the PDRs and their fainter surrounding regions. We combine the Herschel and Spitzer maps to derive at each position the full emission spectrum of all dust components, which we compare to dust and radiative transfer models in order to learn about the spatial variations in both the excitation conditions and the dust properties. Methods: We adjust the emission spectra derived from PACS and SPIRE maps using modified black bodies to derive the temperature and the emissivity index β of the dust in thermal equilibrium with the radiation field. We present a first modeling of the NGC 7023-E PDR with standard dust properties and abundances. Results: At the peak positions, a value of β equal to 2 is compatible with the data. The detected spectra and the spatial structures are strongly influenced by radiative transfer effects. We are able to reproduce the spectra at the peak positions deduced from Herschel maps and emitted by dust particles at thermal equilibrium, and also the evolution of the spatial structures observed from the near infrared to the submillimeter. On the other hand, the emission of the stochastically heated smaller particles is overestimated by a factor ~2. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.endust
dc.subject.enextinction
dc.subject.enphoton-dominated region (PDR)
dc.subject.enevolution
dc.subject.ensubmillimeter: ISM
dc.title.enEvolution of interstellar dust with Herschel. First results in the photodissociation regions of NGC 7023
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201014643
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageL96
bordeaux.volume518
bordeaux.peerReviewedoui
hal.identifierhal-00523456
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00523456v1
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