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CH+(1-0) and 13CH+(1-0) absorption lines in the direction of massive star-forming regions

hal.structure.identifierLaboratoire de Radioastronomie [LRA]
dc.contributor.authorFALGARONE, E.
dc.contributor.authorGODARD, B.
hal.structure.identifierCentro de Investigaciones Biológicas [CSIC]
dc.contributor.authorCERNICHARO, J.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorDE LUCA, M.
hal.structure.identifierLaboratoire de Radioastronomie [LRA]
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorGERIN, M.
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorPHILLIPS, T. G.
dc.contributor.authorBLACK, J. H.
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorLIS, D. C.
dc.contributor.authorBELL, T. A.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorBOULANGER, F.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorCOUTENS, A.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorDARTOIS, E.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorENCRENAZ, P.
dc.contributor.authorGIESEN, T.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorGOICOECHEA, J. R.
dc.contributor.authorGOLDSMITH, P. F.
hal.structure.identifierIndian Institute of Technology Delhi [IIT Delhi]
dc.contributor.authorGUPTA, H.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorGRY, C.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorHENNEBELLE, P.
hal.structure.identifierOhio State University [Columbus] [OSU]
dc.contributor.authorHERBST, E.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorHILY-BLANT, Pierre
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorJOBLIN, C.
dc.contributor.authorKAŹMIERCZAK, M.
dc.contributor.authorKOŁOS, R.
dc.contributor.authorKREŁOWSKI, J.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorMARTIN-PINTADO, J.
dc.contributor.authorMONJE, R.
hal.structure.identifierKOSMA, I. Physikalisches Institut
dc.contributor.authorMOOKERJEA, B.
dc.contributor.authorNEUFELD, D. A.
hal.structure.identifierLaboratoire de Radioastronomie [LRA]
dc.contributor.authorPERAULT, M.
dc.contributor.authorPEARSON, J. C.
hal.structure.identifierDepartment of Materials Science and Engineering, KTH [KTH]
dc.contributor.authorPERSSON, C.
dc.contributor.authorPLUME, R.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorSALEZ, M.
hal.structure.identifierDepartment of Obstetrics and Gynecology
dc.contributor.authorSCHMIDT, M.
dc.contributor.authorSONNENTRUCKER, P.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorSTUTZKI, J.
hal.structure.identifierHerschel Science Center [Madrid]
dc.contributor.authorTEYSSIER, D.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorVASTEL, C.
dc.contributor.authorYU, S.
dc.contributor.authorMENTEN, K.
dc.contributor.authorGEBALLE, T. R.
dc.contributor.authorSCHLEMMER, S.
dc.contributor.authorSHIPMAN, R.
hal.structure.identifierSRON Netherlands Institute for Space Research [SRON]
dc.contributor.authorTIELENS, A. G. G. M.
dc.contributor.authorPHILIPP, S.
dc.contributor.authorCROS, A.
dc.contributor.authorZMUIDZINAS, J.
dc.contributor.authorSAMOSKA, L. A.
hal.structure.identifierDepartment of Physics and Astronomy [Waterloo]
dc.contributor.authorKLEIN, K.
hal.structure.identifierINAF - Osservatorio Astrofisico di Arcetri [OAA]
dc.contributor.authorLORENZANI, A.
dc.contributor.authorSZCZERBA, R.
dc.contributor.authorPÉRON, I.
dc.contributor.authorGAUFRE, P.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorRAVERA, L.
dc.contributor.authorMORRIS, P.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorLORD, S.
dc.contributor.authorPLANESAS, P.
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorCAIS, Ph.
dc.date.accessioned2021-07-07T16:37:36Z
dc.date.available2021-07-07T16:37:36Z
dc.date.issued2010-10
dc.identifier.issn0004-6361
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/97014
dc.description.abstractEnWe report the detection of the ground-state rotational transition of the methylidyne cation CH+ and its isotopologue 13CH+ toward the remote massive star-forming regions W33A, W49N, and W51 with the HIFI instrument onboard the Herschel satellite. Both lines are seen only in absorption against the dust continuum emission of the star-forming regions. The CH+ absorption is saturated over almost the entire velocity ranges sampled by the lines-of-sight that include gas associated with the star-forming regions (SFR) and Galactic foreground material. The CH+ column densities are inferred from the optically thin components. A lower limit of the isotopic ratio [ 12CH+] /[ 13CH+] > 35.5 is derived from the absorptions of foreground material toward W49N. The column density ratio, N(CH+)/N(HCO+), is found to vary by at least a factor 10, between 4 and >40, in the Galactic foreground material. Line-of-sight 12CH+ average abundances relative to total hydrogen are estimated. Their average value, N(CH+)/NH > 2.6×10-8, is higher than that observed in the solar neighborhood and confirms the high abundances of CH+ in the Galactic interstellar medium. We compare this result to the predictions of turbulent dissipation regions (TDR) models and find that these high abundances can be reproduced for the inner Galaxy conditions. It is remarkable that the range of predicted N(CH+)/N(HCO+) ratios, from 1 to ~50, is comparable to that observed. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.Appendix (page 6) is only available in electronic form at http://www.aanda.org
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enturbulence
dc.subject.enISM: kinematics and dynamics
dc.subject.enastrochemistry
dc.subject.enISM: molecules
dc.title.enCH+(1-0) and 13CH+(1-0) absorption lines in the direction of massive star-forming regions
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201015109
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.pageL15
bordeaux.volume521
bordeaux.hal.laboratoriesLaboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804*
bordeaux.institutionCNRS
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00542315
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00542315v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2010-10&rft.volume=521&rft.spage=L15&rft.epage=L15&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=FALGARONE,%20E.&GODARD,%20B.&CERNICHARO,%20J.&DE%20LUCA,%20M.&GERIN,%20M.&rft.genre=article


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