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Article: Submillimeter array observation of the proto-planetary nebula CRL 618 in the CO J = 6-5 line

TitleSubmillimeter array observation of the proto-planetary nebula CRL 618 in the CO J = 6-5 line
Authors
KeywordsStars: AGB and post-AGB
Stars: carbon
Stars: imaging
Stars: individual (CRL 618)
Stars: kinematics
Stars: winds, outflows
Issue Date2007
PublisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/AJ/home.html
Citation
Astronomical Journal, 2007, v. 134 n. 5, p. 2035-2045 How to Cite?
AbstractWe report on the results of a Submillimeter Array (SMA) interferometric observation of the proto-planetary nebula CRL 618 in the 12CO J = 6-5 line. With the new capability of the SMA enabling us to use two receivers at a time, we also observed simultaneously in the 12CO J = 2-1 and 13 CO J = 2-1 lines. The 12CO J = 6-5 and 13CO J = 2-1 lines were inteiferometrically observed for the first time toward CRL 618. The flux of the high-velocity component of the 12CO J = 6-5 line is almost fully recovered, while roughly 80% of the flux of the low-velocity component is resolved out. The low recovery rate suggests that the emission region of the low-velocity component of the 12CO J = 6-5 line is largely extended. Continuum emission is detected at both 230 and 690 GHz. The flux of the 690 GHz continuum emission seems to be partially resolved out, suggesting that dust emission partly contaminates the 690 GHz continuum flux. The cavity structure, which has been confirmed in a previous observation in the 12CO J = 2-1 line, is not clearly detected in the 12CO J = 6-5 line, and only the south wall of the cavity is detected. This result suggests that the physical condition of the molecular envelope of CRL 618 is not exactly axially symmetric. © 2007. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/57330
ISSN
2015 Impact Factor: 4.617
2015 SCImago Journal Rankings: 3.069
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNakashima, JIen_HK
dc.contributor.authorFong, Den_HK
dc.contributor.authorHasegawa, Ten_HK
dc.contributor.authorHirano, Nen_HK
dc.contributor.authorKoning, Nen_HK
dc.contributor.authorKwok, Sen_HK
dc.contributor.authorLim, Jen_HK
dc.contributor.authorDinhVanTrungen_HK
dc.contributor.authorYoung, Ken_HK
dc.date.accessioned2010-04-12T01:33:19Z-
dc.date.available2010-04-12T01:33:19Z-
dc.date.issued2007en_HK
dc.identifier.citationAstronomical Journal, 2007, v. 134 n. 5, p. 2035-2045en_HK
dc.identifier.issn0004-6256en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57330-
dc.description.abstractWe report on the results of a Submillimeter Array (SMA) interferometric observation of the proto-planetary nebula CRL 618 in the 12CO J = 6-5 line. With the new capability of the SMA enabling us to use two receivers at a time, we also observed simultaneously in the 12CO J = 2-1 and 13 CO J = 2-1 lines. The 12CO J = 6-5 and 13CO J = 2-1 lines were inteiferometrically observed for the first time toward CRL 618. The flux of the high-velocity component of the 12CO J = 6-5 line is almost fully recovered, while roughly 80% of the flux of the low-velocity component is resolved out. The low recovery rate suggests that the emission region of the low-velocity component of the 12CO J = 6-5 line is largely extended. Continuum emission is detected at both 230 and 690 GHz. The flux of the 690 GHz continuum emission seems to be partially resolved out, suggesting that dust emission partly contaminates the 690 GHz continuum flux. The cavity structure, which has been confirmed in a previous observation in the 12CO J = 2-1 line, is not clearly detected in the 12CO J = 6-5 line, and only the south wall of the cavity is detected. This result suggests that the physical condition of the molecular envelope of CRL 618 is not exactly axially symmetric. © 2007. The American Astronomical Society. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/AJ/home.htmlen_HK
dc.relation.ispartofAstronomical Journalen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe Astronomical Journal. Copyright © University of Chicago Press.en_HK
dc.subjectStars: AGB and post-AGBen_HK
dc.subjectStars: carbonen_HK
dc.subjectStars: imagingen_HK
dc.subjectStars: individual (CRL 618)en_HK
dc.subjectStars: kinematicsen_HK
dc.subjectStars: winds, outflowsen_HK
dc.titleSubmillimeter array observation of the proto-planetary nebula CRL 618 in the CO J = 6-5 lineen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-6256&volume=134&issue=5&spage=2035&epage=2045&date=2007&atitle=Submillimeter+Array+observation+of+the+proto-planetary+nebula+CRL+618+in+the+CO+J+=+6-5+Lineen_HK
dc.identifier.emailNakashima, JI: junichi@hku.hken_HK
dc.identifier.emailKwok, S: deannote@hku.hken_HK
dc.identifier.emailLim, J: jjlim@hku.hken_HK
dc.identifier.authorityNakashima, JI=rp00764en_HK
dc.identifier.authorityKwok, S=rp00716en_HK
dc.identifier.authorityLim, J=rp00745en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1086/521985en_HK
dc.identifier.scopuseid_2-s2.0-36049004280en_HK
dc.identifier.hkuros146041-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-36049004280&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume134en_HK
dc.identifier.issue5en_HK
dc.identifier.spage2035en_HK
dc.identifier.epage2045en_HK
dc.identifier.isiWOS:000250518400028-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNakashima, JI=35485342300en_HK
dc.identifier.scopusauthoridFong, D=7103154814en_HK
dc.identifier.scopusauthoridHasegawa, T=7404173711en_HK
dc.identifier.scopusauthoridHirano, N=35769189500en_HK
dc.identifier.scopusauthoridKoning, N=15520613500en_HK
dc.identifier.scopusauthoridKwok, S=22980498300en_HK
dc.identifier.scopusauthoridLim, J=7403453870en_HK
dc.identifier.scopusauthoridDinhVanTrung=15520778600en_HK
dc.identifier.scopusauthoridYoung, K=7402601128en_HK

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