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HIFI Observations of Water in the Atmosphere of Comet C/2008 Q3 (Garradd)

hal.structure.identifierMax-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research [MPS]
dc.contributor.authorHARTOGH, P.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorCROVISIER, J.
dc.contributor.authorDE VAL-BORRO, M.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorBOCKELÉE-MORVAN, D.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorBIVER, N.
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorLIS, D. C.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorMORENO, R.
dc.contributor.authorJARCHOW, C.
dc.contributor.authorRENGEL, M.
dc.contributor.authorEMPRECHTINGER, M.
dc.contributor.authorSZUTOWICZ, S.
hal.structure.identifierSpace Research Centre of Polish Academy of Sciences [CBK]
dc.contributor.authorBANASZKIEWICZ, M.
dc.contributor.authorBENSCH, F.
hal.structure.identifierPolska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences [PAN]
dc.contributor.authorBLECKA, M. I.
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.authorCAVALIÉ, T.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorENCRENAZ, T.
hal.structure.identifierEuropean Southern Observatory [ESO]
dc.contributor.authorJEHIN, E.
hal.structure.identifierMax-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research [MPS]
dc.contributor.authorKÜPPERS, M.
dc.contributor.authorLARA, L. -M.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorLELLOUCH, E.
dc.contributor.authorSWINYARD, B. M.
dc.contributor.authorVANDENBUSSCHE, B.
hal.structure.identifierHarvard-Smithsonian Center for Astrophysics [CfA]
dc.contributor.authorBERGIN, E. A.
hal.structure.identifierLabOratoire proCédés énergIe bâtimEnt [LOCIE]
dc.contributor.authorBLAKE, G. A.
dc.contributor.authorBLOMMAERT, J. A. D. L.
hal.structure.identifierCentro de Investigaciones Biológicas [CSIC]
dc.contributor.authorCERNICHARO, J.
hal.structure.identifierInstituut voor Sterrenkunde [Leuven]
dc.contributor.authorDECIN, L.
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorENCRENAZ, P.
dc.contributor.authorDE GRAAUW, T.
dc.contributor.authorHUTSEMEKERS, D.
dc.contributor.authorKIDGER, M.
dc.contributor.authorMANFROID, J.
dc.contributor.authorMEDVEDEV, A. S.
dc.contributor.authorNAYLOR, D. A.
dc.contributor.authorSCHIEDER, R.
hal.structure.identifierUniversität Bern / University of Bern [UNIBE]
dc.contributor.authorTHOMAS, N
dc.contributor.authorWAELKENS, C.
dc.contributor.authorROELFSEMA, P. R.
dc.contributor.authorDIELEMAN, P.
dc.contributor.authorGUESTEN, R.
hal.structure.identifierMax-Planck-Institut für Radioastronomie [MPIFR]
dc.contributor.authorKLEIN, T.
dc.contributor.authorKASEMANN, C.
dc.contributor.authorCARIS, M.
hal.structure.identifierOnsala Space Observatory
dc.contributor.authorOLBERG, M.
dc.contributor.authorBENZ, A. O.
dc.date.created2010
dc.date.issued2010
dc.identifier.issn0004-6361
dc.description.abstractEnHigh-resolution far-infrared and sub-millimetre spectroscopy of water lines is an important tool to understand the physical and chemical properties of cometary atmospheres. We present observations of several rotational ortho- and para-water transitions in comet C/2008 Q3 (Garradd) performed with HIFI on Herschel. These observations have provided the first detection of the 2_{12}-1_{01} (1669 GHz) ortho and 1_{11}-0_{00} (1113 GHz) para transitions of water in a cometary spectrum. In addition, the ground-state transition 1_{10}-1_{01} at 557 GHz is detected and mapped. By detecting several water lines quasi-simultaneously and mapping their emission we can constrain the excitation parameters in the coma. Synthetic line profiles are computed using excitation models which include excitation by collisions, solar infrared radiation, and radiation trapping. We obtain the gas kinetic temperature, constrain the electron density profile, and estimate the coma expansion velocity by analyzing the map and line shapes. We derive water production rates of 1.7-2.8 x 10^{28} s^{-1} over the range r_h = 1.83-1.85 AU.
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enHIFI Observations of Water in the Atmosphere of Comet C/2008 Q3 (Garradd)
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201014665
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.identifier.arxiv1005.2969
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageL150
bordeaux.volume518
bordeaux.peerReviewedoui
hal.identifierhal-00521675
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.escomets: individual: C/2008 Q3
dc.subject.esradio lines: general
dc.subject.essubmillimeter: general
dc.subject.estechniques: spectroscopic
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00521675v1
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