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Conference Paper: Molecular evolution from AGB stars to planetary nebulae

TitleMolecular evolution from AGB stars to planetary nebulae
Authors
Issue Date2011
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU
Citation
The IAU Symposium 280: The Molecular Universe, Toledo, Spain, 29 May-3 June 2011. In International Astronomical Union Proceedings, 2011, v. 7 S280, p. 203-215 How to Cite?
AbstractThe late stages of stellar evolution from the Asymptotic Giant Branch (AGB) to planetary nebulae represent the most active phase of molecular synthesis in a star's life. Over 60 molecular species, including inorganics, organics, radicals, chains, rings, and molecular ions have been detected in the circumstellar envelopes of evolved stars. Most interestingly, complex organic compounds of aromatic and aliphatic structures are synthesized over very short time intervals after the end of the AGB. Also appeared during the post-AGB evolution are the unidentified 21 and 30 μm emission features, which are believed to originate from carbonaceous compounds. The circumstellar environment is an ideal laboratory for the testing of theories of chemical synthesis. The distinct spectral behavior among AGB stars, proto-planetary nebulae (PPN), and planetary nebulae (PN) and the short evolutionary time scales that separate these stages pose severe constraints on models. In this paper, we will present an observational summary of the chemical synthesis in the late stages of stellar evolution, discuss chemical and physical processes at work, and speculate on the possible effects these chemical products have on the Galaxy and the Solar System.
Persistent Identifierhttp://hdl.handle.net/10722/136699
ISBN
ISSN
2015 SCImago Journal Rankings: 0.105
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKwok, Sen_US
dc.date.accessioned2011-07-27T02:28:39Z-
dc.date.available2011-07-27T02:28:39Z-
dc.date.issued2011en_US
dc.identifier.citationThe IAU Symposium 280: The Molecular Universe, Toledo, Spain, 29 May-3 June 2011. In International Astronomical Union Proceedings, 2011, v. 7 S280, p. 203-215en_US
dc.identifier.isbn978-110701980-5-
dc.identifier.issn1743-9213-
dc.identifier.urihttp://hdl.handle.net/10722/136699-
dc.description.abstractThe late stages of stellar evolution from the Asymptotic Giant Branch (AGB) to planetary nebulae represent the most active phase of molecular synthesis in a star's life. Over 60 molecular species, including inorganics, organics, radicals, chains, rings, and molecular ions have been detected in the circumstellar envelopes of evolved stars. Most interestingly, complex organic compounds of aromatic and aliphatic structures are synthesized over very short time intervals after the end of the AGB. Also appeared during the post-AGB evolution are the unidentified 21 and 30 μm emission features, which are believed to originate from carbonaceous compounds. The circumstellar environment is an ideal laboratory for the testing of theories of chemical synthesis. The distinct spectral behavior among AGB stars, proto-planetary nebulae (PPN), and planetary nebulae (PN) and the short evolutionary time scales that separate these stages pose severe constraints on models. In this paper, we will present an observational summary of the chemical synthesis in the late stages of stellar evolution, discuss chemical and physical processes at work, and speculate on the possible effects these chemical products have on the Galaxy and the Solar System.-
dc.languageengen_US
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU-
dc.relation.ispartofInternational Astronomical Union Proceedingsen_US
dc.rightsInternational Astronomical Union Proceedings. Copyright © Cambridge University Press.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleMolecular evolution from AGB stars to planetary nebulaeen_US
dc.typeConference_Paperen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1017/S1743921311024987-
dc.identifier.scopuseid_2-s2.0-84882743732-
dc.identifier.hkuros187639en_US
dc.identifier.volume7-
dc.identifier.issueS280-
dc.identifier.spage203en_US
dc.identifier.epage215en_US
dc.identifier.isiWOS:000305449300018-
dc.publisher.placeUnited Kingdom-
dc.customcontrol.immutablesml 140523-

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