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Searching for Trans Ethyl Methyl Ether in Orion KL

hal.structure.identifierDpt. Astrofisica Molecular e Infrarroja
dc.contributor.authorTERCERO, B.,
hal.structure.identifierDepartamento de Astrofísica Molecular e Infrarroja [DAMIR]
dc.contributor.authorCERNICHARO, J.,
hal.structure.identifierDpt. Astrofisica Molecular e Infrarroja
hal.structure.identifierDepartamento de Astrofísica Molecular e Infrarroja [DAMIR]
dc.contributor.authorLÓPEZ, A.,
hal.structure.identifierFORMATION STELLAIRE 2015
dc.contributor.authorBROUILLET, N.
hal.structure.identifierUniversidad de Valladolid-CSIC
dc.contributor.authorKOLESNIKOVÁ, L.,
hal.structure.identifierLaboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
dc.contributor.authorMOTIYENKO, R. A.,
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.authorALONSO, J. L.,
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorGUILLEMIN, J.-C.,
dc.date.issued2015
dc.identifier.issn0004-6361
dc.description.abstractEnWe report on the tentative detection of trans ethyl methyl ether (tEME), t-CHCHOCH, through the identification of a large number of rotational lines from each one of the spin states of the molecule towards Orion KL. We also search for gauche-trans-n-propanol, Gt-n-CHCHCHOH, an isomer of tEME in the same source. We have identified lines of both species in the IRAM 30 m line survey and in the ALMA Science Verification data. We have obtained ALMA maps to establish the spatial distribution of these species. Whereas tEME mainly arises from the compact ridge component of Orion, Gt-n-propanol appears at the emission peak of ethanol (south hot core). The derived column densities of these species at the location of their emission peaks are ≤(4.0 ± 0.8) × 10 cm and ≤(1.0 ± 0.2)× 10 cm for tEME and Gt-n-propanol, respectively. The rotational temperature is ~100 K for both molecules. We also provide maps of CHOCOH, CHCHOCOH, CHOCH, CHOH, and CHCHOH to compare the distribution of these organic saturated O-bearing species containing methyl and ethyl groups in this region. Abundance ratios of related species and upper limits to the abundances of non-detected ethers are provided. We derive an abundance ratio (CHOCH)/(tEME) ≥ 150 in the compact ridge of Orion.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enclouds
dc.subject.enabundances
dc.subject.enradio lines
dc.subject.enmolecules
dc.subject.enindividual objects (Orion KL)
dc.subject.ensurveys
dc.title.enSearching for Trans Ethyl Methyl Ether in Orion KL
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201526255
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.identifier.arxiv1509.00179
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.page1-39
bordeaux.volume582
bordeaux.peerReviewedoui
hal.identifierhal-01197453
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01197453v1
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