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Conference Paper: Stellar evolution from AGB to planetary nebulae

TitleStellar evolution from AGB to planetary nebulae
Authors
KeywordsPlanetary nebulae: general
Stars: AGB and post-AGB
Stars: evolution
Issue Date2008
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU
Citation
The International Astronomical Union Symposia and Colloquia S252: The Art of Modeling Stars in the 21st Century, Hainan, China, 6-11 April 2008. How to Cite?
AbstractPlanetary nebulae are formed by an interacting winds process where the remnant of the AGB wind is compressed and accelerated by a later-developed fast wind from the central star. One-dimensional dynamical models have successfully explained the multi-shell (bubble, shell, crown, haloes) structures and the kinematics of planetary nebulae. However, the origin of the diverse asymmetric morphology of planetary nebulae is still not understood. Recent observations in the visible, infrared, and the submillimeter have suggested that the AGB mass loss becomes aspherical in the very late stages, forming an expanding torus around the star. A fast, highly collimated wind then emerges in the polar directions and carves out a cavity in the AGB envelope to form a bipolar nebula. Newly discovered structures such as concentric arcs, 2-D rings, multiple lobes, and point-symmetric structures suggest that both the slow and fast winds may have temporal and directional variations, and precession can play a role in the shaping of planetary nebulae. In this paper, we review the latest observations of planetary nebulae and proto-planetary nebulae and discuss the various physical mechanisms (rotation, binary, magnetic field, etc) that could lead to the observed morphologies. © 2008 International Astronomical Union.
DescriptionProceedings of the International Astronomical Union, 2008, v. 4 n. S252, p. 197-203
Persistent Identifierhttp://hdl.handle.net/10722/128482
ISSN
2015 SCImago Journal Rankings: 0.105
References

 

DC FieldValueLanguage
dc.contributor.authorKwok, Sen_HK
dc.date.accessioned2010-10-31T14:30:38Z-
dc.date.available2010-10-31T14:30:38Z-
dc.date.issued2008en_HK
dc.identifier.citationThe International Astronomical Union Symposia and Colloquia S252: The Art of Modeling Stars in the 21st Century, Hainan, China, 6-11 April 2008.en_HK
dc.identifier.issn1743-9213en_HK
dc.identifier.urihttp://hdl.handle.net/10722/128482-
dc.descriptionProceedings of the International Astronomical Union, 2008, v. 4 n. S252, p. 197-203-
dc.description.abstractPlanetary nebulae are formed by an interacting winds process where the remnant of the AGB wind is compressed and accelerated by a later-developed fast wind from the central star. One-dimensional dynamical models have successfully explained the multi-shell (bubble, shell, crown, haloes) structures and the kinematics of planetary nebulae. However, the origin of the diverse asymmetric morphology of planetary nebulae is still not understood. Recent observations in the visible, infrared, and the submillimeter have suggested that the AGB mass loss becomes aspherical in the very late stages, forming an expanding torus around the star. A fast, highly collimated wind then emerges in the polar directions and carves out a cavity in the AGB envelope to form a bipolar nebula. Newly discovered structures such as concentric arcs, 2-D rings, multiple lobes, and point-symmetric structures suggest that both the slow and fast winds may have temporal and directional variations, and precession can play a role in the shaping of planetary nebulae. In this paper, we review the latest observations of planetary nebulae and proto-planetary nebulae and discuss the various physical mechanisms (rotation, binary, magnetic field, etc) that could lead to the observed morphologies. © 2008 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.rightsInternational Astronomical Union Proceedings. Copyright © Cambridge University Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPlanetary nebulae: generalen_HK
dc.subjectStars: AGB and post-AGBen_HK
dc.subjectStars: evolutionen_HK
dc.titleStellar evolution from AGB to planetary nebulaeen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1743-9213&volume=4&issue=S252&spage=197&epage=203&date=2008&atitle=Stellar+evolution+from+AGB+to+planetary+nebulae-
dc.identifier.emailKwok, S: deannote@hku.hken_HK
dc.identifier.authorityKwok, S=rp00716en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1017/S1743921308022771en_HK
dc.identifier.scopuseid_2-s2.0-54249159101en_HK
dc.identifier.hkuros181598en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-54249159101&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume4en_HK
dc.identifier.issueS252en_HK
dc.identifier.spage197en_HK
dc.identifier.epage203en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKwok, S=22980498300en_HK

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