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Conference Paper: The molecular envelope of the red supergiant VY CMa

TitleThe molecular envelope of the red supergiant VY CMa
Authors
KeywordsCircumstellar matter
Supergiants
Issue Date2006
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU
Citation
Proceedings Of The International Astronomical Union, 2006, v. 2 n. 234, p. 471-472 How to Cite?
AbstractMillimeter and submillimeter interferometry allows to probe the environment around evolved massive stars, where optical and NIR studies might be severely limited by large extinctions due to dusty environments. We present here the morphology and kinematics of the molecular envelope around the red supergiant star VY CMa. We have used the Submillimeter Array (SMA) to map the 12CO(J=2-1) line and 1.3 mm continuum emissions with an unprecedent resolution of < 2" or 3000 AU. While the line emission presents a roughly circular shape with a radius of ∼ 6000 AU, the velocity structure is markedly different from that of a simple spherically expanding shell. In particular, there is a significant velocity gradient in the East-West direction, confirming the presence of a bipolar outflow. © 2006 International Astronomical Union.
Persistent Identifierhttp://hdl.handle.net/10722/109784
ISSN
2015 SCImago Journal Rankings: 0.105
References

 

DC FieldValueLanguage
dc.contributor.authorMuller, Sen_HK
dc.contributor.authorDinhVanTrungen_HK
dc.contributor.authorMuthumariappan, Cen_HK
dc.contributor.authorLim, Jen_HK
dc.contributor.authorHirano, Nen_HK
dc.contributor.authorKwok, Sen_HK
dc.date.accessioned2010-09-26T01:37:08Z-
dc.date.available2010-09-26T01:37:08Z-
dc.date.issued2006en_HK
dc.identifier.citationProceedings Of The International Astronomical Union, 2006, v. 2 n. 234, p. 471-472en_HK
dc.identifier.issn1743-9213en_HK
dc.identifier.urihttp://hdl.handle.net/10722/109784-
dc.description.abstractMillimeter and submillimeter interferometry allows to probe the environment around evolved massive stars, where optical and NIR studies might be severely limited by large extinctions due to dusty environments. We present here the morphology and kinematics of the molecular envelope around the red supergiant star VY CMa. We have used the Submillimeter Array (SMA) to map the 12CO(J=2-1) line and 1.3 mm continuum emissions with an unprecedent resolution of < 2" or 3000 AU. While the line emission presents a roughly circular shape with a radius of ∼ 6000 AU, the velocity structure is markedly different from that of a simple spherically expanding shell. In particular, there is a significant velocity gradient in the East-West direction, confirming the presence of a bipolar outflow. © 2006 International Astronomical Union.en_HK
dc.languageengen_HK
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAUen_HK
dc.relation.ispartofProceedings of the International Astronomical Unionen_HK
dc.rightsIAU Symposium 234. Copyright © Cambridge University Press.en_HK
dc.subjectCircumstellar matteren_HK
dc.subjectSupergiantsen_HK
dc.titleThe molecular envelope of the red supergiant VY CMaen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLim, J: jjlim@hku.hken_HK
dc.identifier.emailKwok, S: deannote@hku.hken_HK
dc.identifier.authorityLim, J=rp00745en_HK
dc.identifier.authorityKwok, S=rp00716en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1017/S1743921306003796en_HK
dc.identifier.scopuseid_2-s2.0-33845537253en_HK
dc.identifier.hkuros133858en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33845537253&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume2en_HK
dc.identifier.issue234en_HK
dc.identifier.spage471en_HK
dc.identifier.epage472en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridMuller, S=15071043100en_HK
dc.identifier.scopusauthoridDinhVanTrung=15520778600en_HK
dc.identifier.scopusauthoridMuthumariappan, C=12800003800en_HK
dc.identifier.scopusauthoridLim, J=7403453870en_HK
dc.identifier.scopusauthoridHirano, N=35769189500en_HK
dc.identifier.scopusauthoridKwok, S=22980498300en_HK

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