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Conference Paper: Synthesis of organic compounds in planetary nebulae and proto-planetary nebulae

TitleSynthesis of organic compounds in planetary nebulae and proto-planetary nebulae
Authors
KeywordsAsymptotic giant branch stars
Infrared spectroscopy
Interstellar dust
Planetary nebulae
Issue Date2006
PublisherAmerican Institute of Physics.
Citation
ASTROCHEMISTRY: From Laboratory Studies to Astronomical Observations, v. 855, p. 154-164 How to Cite?
AbstractRecent millimeter-wave and infrared spectroscopic observations have found evidence of rapid synthesis of complex organic molecules in the late stages of stellar evolution. The chemical synthesis begins with the formation of acetylene, the first building block of benzene, in carbon stars. In the following proto-planetary nebula stage, emission features corresponding to stretching and bending modes of aliphatic compounds are detected. When these objects evolve to become planetary nebulae, aromatic C-H and C-C stretching and bending modes become strong. These results show that complex carbonaceous compounds can be produced in a circumstellar environment over a period of only a few thousand years. Isotopic analysis of meteorites and interplanetary dust collected in the upper atmosphere have revealed the presence of pre-solar grains similar to those formed in evolved stars. This provides a direct link between star dust and the solar system and raises the possibility that the early solar system was chemically enriched by stellar ejecta. © 2006 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/109790
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorKwok, Sen_HK
dc.date.accessioned2010-09-26T01:37:23Z-
dc.date.available2010-09-26T01:37:23Z-
dc.date.issued2006en_HK
dc.identifier.citationASTROCHEMISTRY: From Laboratory Studies to Astronomical Observations, v. 855, p. 154-164en_HK
dc.identifier.issn0094-243Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/109790-
dc.description.abstractRecent millimeter-wave and infrared spectroscopic observations have found evidence of rapid synthesis of complex organic molecules in the late stages of stellar evolution. The chemical synthesis begins with the formation of acetylene, the first building block of benzene, in carbon stars. In the following proto-planetary nebula stage, emission features corresponding to stretching and bending modes of aliphatic compounds are detected. When these objects evolve to become planetary nebulae, aromatic C-H and C-C stretching and bending modes become strong. These results show that complex carbonaceous compounds can be produced in a circumstellar environment over a period of only a few thousand years. Isotopic analysis of meteorites and interplanetary dust collected in the upper atmosphere have revealed the presence of pre-solar grains similar to those formed in evolved stars. This provides a direct link between star dust and the solar system and raises the possibility that the early solar system was chemically enriched by stellar ejecta. © 2006 American Institute of Physics.en_HK
dc.languageengen_HK
dc.publisherAmerican Institute of Physics.en_HK
dc.relation.ispartofAIP Conference Proceedingsen_HK
dc.rightsASTROCHEMISTRY: From Laboratory Studies to Astronomical Observations. Copyright © American Institute of Physics.en_HK
dc.subjectAsymptotic giant branch starsen_HK
dc.subjectInfrared spectroscopyen_HK
dc.subjectInterstellar dusten_HK
dc.subjectPlanetary nebulaeen_HK
dc.titleSynthesis of organic compounds in planetary nebulae and proto-planetary nebulaeen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailKwok, S: deannote@hku.hken_HK
dc.identifier.authorityKwok, S=rp00716en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.2359551en_HK
dc.identifier.scopuseid_2-s2.0-33846478675en_HK
dc.identifier.hkuros124999en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846478675&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume855en_HK
dc.identifier.spage154en_HK
dc.identifier.epage164en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridKwok, S=22980498300en_HK

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