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Article: Odin water mapping in the Orion KL region

TitleOdin water mapping in the Orion KL region
Authors
KeywordsIsm: Abundances
Ism: Individual Objects: Orion Kl
Ism: Molecules
Submillimeter
Issue Date2003
PublisherE D P Sciences. The Journal's web site is located at http://www.aanda.org
Citation
Astronomy And Astrophysics, 2003, v. 402 n. 3, p. L47-L54 How to Cite?
AbstractNew results from water mapping observations of the Orion KL region using the submm/mm wave satellite Odin (2.1′ beam size at 557 GHz), are presented. The ortho-H 2O J K(+)K(-) = l 1.0 → l 0.1 ground state transition was observed in a 7′ × 7′ rectangular grid with a spacing of 1′, while the same line of H 2 18O was measured in two positions, Orion KL itself and 2′ south of Orion KL. In the main water species, the KL molecular outflow is largely resolved from the ambient cloud and it is found to have an extension of 60″-110″. The H 2O outflow profile exhibits a rather striking absorption-like asymmetry at the line centre. Self-absorption in the near (or "blue") part of the outflow (and possibly in foreground quiescent halo gas) is tentatively suggested to play a role here. We argue that the dominant part of the KL H 2 18O outflow emission emanates from the compact (size ∼15″) low-velocity flow and here estimate an H 2O abundance of circa 10 -5 compared to all H 2 in the flow - an order of magnitude below earlier estimates of the H 2O abundance in the shocked gas of the high-velocity flow. The narrow ambient cloud lines show weak velocity trends, both in the N-S and E-W directions. H 2 18O is detected for the first time in the southern position at a level of ∼0.15 K and we here estimate an H 2O abundance of (1-8) × 10 -8.
Persistent Identifierhttp://hdl.handle.net/10722/179665
ISSN
2014 Impact Factor: 4.378
2015 SCImago Journal Rankings: 2.446
References

 

DC FieldValueLanguage
dc.contributor.authorOlofsson, AOHen_US
dc.contributor.authorOlofsson, Gen_US
dc.contributor.authorHjalmarson, Åen_US
dc.contributor.authorBergman, Pen_US
dc.contributor.authorBlack, JHen_US
dc.contributor.authorBooth, RSen_US
dc.contributor.authorBuat, Ven_US
dc.contributor.authorCurry, CLen_US
dc.contributor.authorEncrenaz, PJen_US
dc.contributor.authorFalgarone, Een_US
dc.contributor.authorFeldman, Pen_US
dc.contributor.authorFich, Men_US
dc.contributor.authorFlorén, HGen_US
dc.contributor.authorFrisk, Uen_US
dc.contributor.authorGerin, Men_US
dc.contributor.authorGregersen, EMen_US
dc.contributor.authorHarju, Jen_US
dc.contributor.authorHasegawa, Ten_US
dc.contributor.authorJohansson, LEBen_US
dc.contributor.authorKwok, Sen_US
dc.contributor.authorLarsson, Ben_US
dc.contributor.authorLecacheux, Aen_US
dc.contributor.authorLiljeström, Ten_US
dc.contributor.authorLiseau, Ren_US
dc.contributor.authorMattila, Ken_US
dc.contributor.authorMitchell, GFen_US
dc.contributor.authorNordh, HLen_US
dc.contributor.authorOlberg, Men_US
dc.contributor.authorOlofsson, Hen_US
dc.contributor.authorPagani, Len_US
dc.contributor.authorPlume, Ren_US
dc.contributor.authorRistorcelli, Ien_US
dc.contributor.authorRydbeck, Gen_US
dc.contributor.authorSandqvist, Aaen_US
dc.contributor.authorVon Schéele, Fen_US
dc.contributor.authorSerra, Gen_US
dc.contributor.authorTothill, NFen_US
dc.contributor.authorVolk, Ken_US
dc.contributor.authorWilson, CDen_US
dc.date.accessioned2012-12-19T10:02:35Z-
dc.date.available2012-12-19T10:02:35Z-
dc.date.issued2003en_US
dc.identifier.citationAstronomy And Astrophysics, 2003, v. 402 n. 3, p. L47-L54en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/10722/179665-
dc.description.abstractNew results from water mapping observations of the Orion KL region using the submm/mm wave satellite Odin (2.1′ beam size at 557 GHz), are presented. The ortho-H 2O J K(+)K(-) = l 1.0 → l 0.1 ground state transition was observed in a 7′ × 7′ rectangular grid with a spacing of 1′, while the same line of H 2 18O was measured in two positions, Orion KL itself and 2′ south of Orion KL. In the main water species, the KL molecular outflow is largely resolved from the ambient cloud and it is found to have an extension of 60″-110″. The H 2O outflow profile exhibits a rather striking absorption-like asymmetry at the line centre. Self-absorption in the near (or "blue") part of the outflow (and possibly in foreground quiescent halo gas) is tentatively suggested to play a role here. We argue that the dominant part of the KL H 2 18O outflow emission emanates from the compact (size ∼15″) low-velocity flow and here estimate an H 2O abundance of circa 10 -5 compared to all H 2 in the flow - an order of magnitude below earlier estimates of the H 2O abundance in the shocked gas of the high-velocity flow. The narrow ambient cloud lines show weak velocity trends, both in the N-S and E-W directions. H 2 18O is detected for the first time in the southern position at a level of ∼0.15 K and we here estimate an H 2O abundance of (1-8) × 10 -8.en_US
dc.languageengen_US
dc.publisherE D P Sciences. The Journal's web site is located at http://www.aanda.orgen_US
dc.relation.ispartofAstronomy and Astrophysicsen_US
dc.subjectIsm: Abundancesen_US
dc.subjectIsm: Individual Objects: Orion Klen_US
dc.subjectIsm: Moleculesen_US
dc.subjectSubmillimeteren_US
dc.titleOdin water mapping in the Orion KL regionen_US
dc.typeArticleen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0038363354en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0038363354&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume402en_US
dc.identifier.issue3en_US
dc.identifier.spageL47en_US
dc.identifier.epageL54en_US
dc.publisher.placeFranceen_US
dc.identifier.scopusauthoridOlofsson, AOH=7006322972en_US
dc.identifier.scopusauthoridOlofsson, G=7005783479en_US
dc.identifier.scopusauthoridHjalmarson, Å=15744175200en_US
dc.identifier.scopusauthoridBergman, P=7006615192en_US
dc.identifier.scopusauthoridBlack, JH=25222377400en_US
dc.identifier.scopusauthoridBooth, RS=7202614585en_US
dc.identifier.scopusauthoridBuat, V=7003733332en_US
dc.identifier.scopusauthoridCurry, CL=7101672097en_US
dc.identifier.scopusauthoridEncrenaz, PJ=6603978312en_US
dc.identifier.scopusauthoridFalgarone, E=7003349192en_US
dc.identifier.scopusauthoridFeldman, P=7103377526en_US
dc.identifier.scopusauthoridFich, M=7003964696en_US
dc.identifier.scopusauthoridFlorén, HG=6602447564en_US
dc.identifier.scopusauthoridFrisk, U=8966521600en_US
dc.identifier.scopusauthoridGerin, M=7005195915en_US
dc.identifier.scopusauthoridGregersen, EM=7005825957en_US
dc.identifier.scopusauthoridHarju, J=8908583000en_US
dc.identifier.scopusauthoridHasegawa, T=7404173711en_US
dc.identifier.scopusauthoridJohansson, LEB=7401510283en_US
dc.identifier.scopusauthoridKwok, S=22980498300en_US
dc.identifier.scopusauthoridLarsson, B=7202678664en_US
dc.identifier.scopusauthoridLecacheux, A=7003423533en_US
dc.identifier.scopusauthoridLiljeström, T=6602325021en_US
dc.identifier.scopusauthoridLiseau, R=6701345678en_US
dc.identifier.scopusauthoridMattila, K=7102595643en_US
dc.identifier.scopusauthoridMitchell, GF=7403103591en_US
dc.identifier.scopusauthoridNordh, HL=6506027123en_US
dc.identifier.scopusauthoridOlberg, M=16201342800en_US
dc.identifier.scopusauthoridOlofsson, H=7004294995en_US
dc.identifier.scopusauthoridPagani, L=7006076032en_US
dc.identifier.scopusauthoridPlume, R=7004220684en_US
dc.identifier.scopusauthoridRistorcelli, I=6701750764en_US
dc.identifier.scopusauthoridRydbeck, G=6602382899en_US
dc.identifier.scopusauthoridSandqvist, Aa=35451841800en_US
dc.identifier.scopusauthoridVon Schéele, F=6602800581en_US
dc.identifier.scopusauthoridSerra, G=7202261072en_US
dc.identifier.scopusauthoridTothill, NF=6602148553en_US
dc.identifier.scopusauthoridVolk, K=7006571965en_US
dc.identifier.scopusauthoridWilson, CD=7404896077en_US

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