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Strong absorption by interstellar hydrogen fluoride: Herschel/HIFI observations of the sight-line to G10.6-0.4 (W31C)

dc.contributor.authorNEUFELD, D. A.
dc.contributor.authorSONNENTRUCKER, P.
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorPHILLIPS, T. G.
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorLIS, D. C.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorDE LUCA, M.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorGOICOECHEA, J. R.
dc.contributor.authorBLACK, J. H.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
hal.structure.identifierLaboratoire de Radioastronomie [LRA]
dc.contributor.authorGERIN, M.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorBELL, T.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorBOULANGER, F.
hal.structure.identifierCentro de Investigaciones Biológicas [CSIC]
dc.contributor.authorCERNICHARO, J.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorCOUTENS, A.
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorDARTOIS, E.
dc.contributor.authorKAZMIERCZAK, M.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorENCRENAZ, P.
hal.structure.identifierLaboratoire de Radioastronomie [LRA]
dc.contributor.authorFALGARONE, E.
dc.contributor.authorGEBALLE, T. R.
dc.contributor.authorGIESEN, T.
dc.contributor.authorGODARD, B.
dc.contributor.authorGOLDSMITH, P. F.
hal.structure.identifierLaboratoire d'Astrophysique de Marseille [LAM]
dc.contributor.authorGRY, C.
hal.structure.identifierIndian Institute of Technology Delhi [IIT Delhi]
dc.contributor.authorGUPTA, H.
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.authorKOLOS, R.
dc.contributor.authorKRELOWSKI, J.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorMARTIN-PINTADO, J.
hal.structure.identifierMax-Planck-Institut für Radioastronomie [MPIFR]
dc.contributor.authorMENTEN, K. M.
dc.contributor.authorMONJE, R.
hal.structure.identifierKOSMA, I. Physikalisches Institut
dc.contributor.authorMOOKERJEA, B.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorPEARSON, Justin
hal.structure.identifierLaboratoire de Radioastronomie [LRA]
dc.contributor.authorPERAULT, M.
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.
dc.contributor.authorSCHLEMMER, S.
hal.structure.identifierDepartment of Obstetrics and Gynecology
dc.contributor.authorSCHMIDT, M.
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.
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.authorCAIS, Ph.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorCAUX, E.
dc.contributor.authorLISEAU, R.
dc.contributor.authorMORRIS, P.
dc.contributor.authorPLANESAS, P.
dc.date.created2010
dc.date.issued2010
dc.identifier.issn0004-6361
dc.description.abstractEnWe report the detection of strong absorption by interstellar hydrogen fluoride along the sight-line to the submillimeter continuum source G10.6-0.4 (W31C). We have used Herschel's HIFI instrument, in dual beam switch mode, to observe the 1232.4763 GHz J=1-0 HF transition in the upper sideband of the Band 5a receiver. The resultant spectrum shows weak HF emission from G10.6-0.4 at LSR velocities in the range -10 to -3 km/s, accompanied by strong absorption by foreground material at LSR velocities in the range 15 to 50 km/s. The spectrum is similar to that of the 1113.3430 GHz 1(11)-0(00) transition of para-water, although at some frequencies the HF (hydrogen fluoride) optical depth clearly exceeds that of para-H2O. The optically-thick HF absorption that we have observed places a conservative lower limit of 1.6E+14 cm-2 on the HF column density along the sight-line to G10.6-0.4. Our lower limit on the HF abundance, 6E-9 relative to hydrogen nuclei, implies that hydrogen fluoride accounts for between ~ 30 and 100% of the fluorine nuclei in the gas phase along this sight-line. This observation corroborates theoretical predictions that - because the unique thermochemistry of fluorine permits the exothermic reaction of F atoms with molecular hydrogen - HF will be the dominant reservoir of interstellar fluorine under a wide range of conditions.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enISM: molecules
dc.subject.ensubmillimeter: ISM
dc.subject.enmolecular processes
dc.title.enStrong absorption by interstellar hydrogen fluoride: Herschel/HIFI observations of the sight-line to G10.6-0.4 (W31C)
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201014523
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]
dc.identifier.arxiv1005.1671
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageL108
bordeaux.volume518
bordeaux.peerReviewedoui
hal.identifierhal-00521637
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00521637v1
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