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Mid-J CO emission from the Orion BN/KL explosive outflow

hal.structure.identifierFORMATION STELLAIRE 2012
dc.contributor.authorPENG, T.-C.
dc.contributor.authorZAPATA, L. A.
hal.structure.identifierMax-Planck-Institut für Radioastronomie [MPIFR]
dc.contributor.authorWYROWSKI, F.
hal.structure.identifierMax Planck Institute for Radio Astronomy
dc.contributor.authorGÜSTEN, R.
hal.structure.identifierMax-Planck-Institut für Radioastronomie [MPIFR]
dc.contributor.authorMENTEN, K. M.
dc.date.created2012-09-03
dc.date.issued2012
dc.identifier.issn0004-6361
dc.description.abstractEnHigh spatial resolution low-J 12CO observations have shown that the wide-angle outflow seen in the Orion BN/KL region correlates with the famous H2 fingers. Recently, high-resolution large-scale mappings of mid- and higher-J CO emissions have been reported toward the Orion molecular cloud 1 core region using the APEX telescope. Therefore, it is of interest to investigate this outflow in the higher-J 12CO emission, which is likely excited by shocks. The observations were carried out using the dual-color heterodyne array CHAMP+ on the APEX telescope. The images of the Orion BN/KL region were obtained in the 12CO J=6-5 and J=7-6 transitions with angular resolutions of 8.6 and 7.4 arcsec, respectively. The results show a good agreement between our higher-J 12CO emission and SMA low-J 12CO data, which indicates that this wide-angle outflow in Orion BN/KL is likely the result of an explosive event that is related to the runaway objects from a dynamically decayed multiple system. From our observations, we estimate that the kinetic energy of this explosive outflow is about 1-2x10^47 erg. In addition, a scenario has been proposed where part of the outflow is decelerated and absorbed in the cloud to explain the lack of CO bullets in the southern part of BN/KL, which in turn induces the methanol masers seen in this region.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enSM: molecules
dc.subject.enHII regions
dc.subject.enISM: jets and outflows
dc.subject.enradio lines: ISM
dc.subject.ensubmillimeter: ISM
dc.subject.enISM: clouds
dc.title.enMid-J CO emission from the Orion BN/KL explosive outflow
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201219937
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.arxiv1209.0284
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.L19
bordeaux.volume544
bordeaux.peerReviewedoui
hal.identifierhal-00747028
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00747028v1
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