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13C-METHYL Formate in Orion-Kl Alma Observations and Spectroscopic Characterization

hal.structure.identifierCentre de Recherche en Cancérologie de Marseille [CRCM]
dc.contributor.authorFAVRE, C.
dc.contributor.authorCARVAJAL, Miguel,
hal.structure.identifierCentre for Ecology and Hydrology [Wallingford] [CEH]
hal.structure.identifierOxford e-Research Centre [Oxford]
dc.contributor.authorFIELD, David,
hal.structure.identifierDepartment of Astronomy [Ann Arbor]
dc.contributor.authorBERGIN, Edwin,
dc.contributor.authorNEILL, Justin,
dc.contributor.authorCROCKETT, Nathan,
hal.structure.identifierforeign laboratories [FL]
dc.contributor.authorJØRGENSEN, Jes,
dc.contributor.authorBISSCHOP, Suzanne,
hal.structure.identifierFORMATION STELLAIRE 2014
dc.contributor.authorBROUILLET, N.
hal.structure.identifierFORMATION STELLAIRE 2014
dc.contributor.authorDESPOIS, D.
dc.contributor.authorBAUDRY, Alain
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorKLEINER, Isabelle,
hal.structure.identifierLaboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
dc.contributor.authorMARGULÈS, L.,
hal.structure.identifierLaboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
dc.contributor.authorHUET, T. R.,
hal.structure.identifierLaboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
dc.contributor.authorDEMAISON, Jean,
dc.date.issued2014-06
dc.date.conference2014-06-16
dc.description.abstractEnDetermination of elemental isotopic ratios is valuable for understanding the chemical evolution of interstellar material. Until now the 12C/13C ratio has predominantly been measured in simple species such as CO, CN and H2CO and, becomes larger with increasing distance from the Galactic Center. We have investigated the carbon isotopic ratio for methyl formate HCOOCH3, and its isotopologues H13COOCH3 and HCOO13CH3 addressing the issue whether the 12C/13C ratio is the same for both simple and large molecules. Using ALMA science verification observations of Orion-KL and the spectroscopic characterization of the complex H13COOCH3 and HCOO13CH3 species that we have performed, we have 1) confirmed the detection of the 13C-methyl formate species in Orion-KL and, 2) image for the first time their spatial distribution. I will present some of these results. In particular, our analysis shows that the 12C/13C isotope ratio in methyl formate toward the Compact Ridge and Hot Core-SW components that are associated with Orion-KL are, for both the 13C-methyl formate isotopologues, commensurate with the well-known 12C/13C ratio of the simple species CO. Our findings suggest that grain surface chemistry very likely prevails in the formation of methyl formate main and 13C isotopologues.
dc.language.isoen
dc.title.en13C-METHYL Formate in Orion-Kl Alma Observations and Spectroscopic Characterization
dc.typeCommunication dans un congrès
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
bordeaux.countryUS
bordeaux.conference.cityUrbana-Champaign
bordeaux.peerReviewedoui
hal.identifierhal-01136345
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2014-06-20
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01136345v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2014-06&rft.au=FAVRE,%20C.&CARVAJAL,%20Miguel,&FIELD,%20David,&BERGIN,%20Edwin,&NEILL,%20Justin,&rft.genre=unknown


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