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An Observational Investigation of the Identity of B11244 (l-C3H+/C3H-)

hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorMCGUIRE, Brett A.
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorCARROLL, P. Brandon
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorGRATIER, P.
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorGUZMAN VELOSO, Viviana
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorPETY, Jerome
hal.structure.identifierLaboratoire Univers et Théories [LUTH (UMR_8102)]
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorROUEFF, Evelyne
hal.structure.identifierLaboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
dc.contributor.authorGERIN, Maryvonne
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorBLAKE, Geoffrey A.
hal.structure.identifierNational Radio Astronomy Observatory [NRAO]
dc.contributor.authorREMIJAN, Anthony J.
dc.date.issued2014-03
dc.identifier.issn0004-637X
dc.description.abstractEnPety et al. have reported the detection of eight transitions of a closed-shell, linear molecule (B11244) in observations toward the Horsehead photodissociation region (PDR), which they attribute to the l-C3H+ cation. Recent high-level ab initio calculations have called this assignment into question; the anionic C3H- molecule has been suggested as a more likely candidate. Here, we examine observations of the Horsehead PDR, Sgr B2(N), TMC-1, and IRC+10216 in the context of both l-C3H+ and C3H-. We find no observational evidence of Ka = 1 lines, which should be present were the carrier indeed C3H-. Additionally, we find a strong anticorrelation between the presence of known molecular anions and B11244 in these regions. Finally, we discuss the formation and destruction chemistry of C3H- in the context of the physical conditions in the regions. Based on these results, we conclude there is little evidence to support the claim that the carrier is C3H-.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.enISM: molecules
dc.subject.enISM: individual objects: Sagittarius B2(N) TMC-1 Horsehead PDR IRC+10216
dc.subject.enastrochemistry
dc.subject.enISM: clouds
dc.title.enAn Observational Investigation of the Identity of B11244 (l-C3H+/C3H-)
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/783/1/36
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.identifier.arxiv1312.0153
bordeaux.journalThe Astrophysical Journal
bordeaux.page36
bordeaux.volume783
bordeaux.peerReviewedoui
hal.identifierhal-00992471
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00992471v1
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