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Conference Paper: Aromatic, aliphatic, and the unidentified 21 micron emission features in proto-planetary nebulae
Title | Aromatic, aliphatic, and the unidentified 21 micron emission features in proto-planetary nebulae |
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Authors | |
Keywords | Astrochemistry Circumstellar matter Infrared: ISM ISM: lines and bands Planetary nebulae: general Stars: AGB and post-AGB |
Issue Date | 2008 |
Publisher | Cambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU |
Citation | The International Astronomical Union (IAU) Symposium S251: Organic Matter in Space, Hong Kong, 18-22 February 2008. How to Cite? |
Abstract | Aromatic features at 3.3, 6.2, 7.7, 8.6, 11.3 m are observed in proto-planetary nebulae (PPNe) as well as in PNe and H ii regions. Aliphatic features at 3.4 and 6.9 m are also observed; however, these features are often stronger in PPNe than in PNe. These observations suggest an evolution in the features from simple molecules (C2H2) in AGB stars to aliphatics in PPNe to aromatics in PNe. In the same carbon-rich PPNe, a strong, broad, unidentified 21 m emission feature has been found. We will present recent observations of the aromatic, aliphatic, and 21 m emission features, along with C2H2 (13.7 m) and a new feature at 15.8 m, and discuss correlations among them and other properties of these PPNe. © 2008 International Astronomical Union. |
Description | Proceedings of the International Astronomical Union, 2008, v. 4 n. S251, p. 213-214 |
Persistent Identifier | http://hdl.handle.net/10722/128486 |
ISSN | 2023 SCImago Journal Rankings: 0.121 |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hrivnak, BJ | en_HK |
dc.contributor.author | Volk, K | en_HK |
dc.contributor.author | Geballe, TR | en_HK |
dc.contributor.author | Kwok, S | en_HK |
dc.date.accessioned | 2010-10-31T14:30:52Z | - |
dc.date.available | 2010-10-31T14:30:52Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | The International Astronomical Union (IAU) Symposium S251: Organic Matter in Space, Hong Kong, 18-22 February 2008. | en_HK |
dc.identifier.issn | 1743-9213 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/128486 | - |
dc.description | Proceedings of the International Astronomical Union, 2008, v. 4 n. S251, p. 213-214 | - |
dc.description.abstract | Aromatic features at 3.3, 6.2, 7.7, 8.6, 11.3 m are observed in proto-planetary nebulae (PPNe) as well as in PNe and H ii regions. Aliphatic features at 3.4 and 6.9 m are also observed; however, these features are often stronger in PPNe than in PNe. These observations suggest an evolution in the features from simple molecules (C2H2) in AGB stars to aliphatics in PPNe to aromatics in PNe. In the same carbon-rich PPNe, a strong, broad, unidentified 21 m emission feature has been found. We will present recent observations of the aromatic, aliphatic, and 21 m emission features, along with C2H2 (13.7 m) and a new feature at 15.8 m, and discuss correlations among them and other properties of these PPNe. © 2008 International Astronomical Union. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Cambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU | en_HK |
dc.relation.ispartof | Proceedings of the International Astronomical Union | en_HK |
dc.rights | International Astronomical Union Proceedings. Copyright © Cambridge University Press. | en_HK |
dc.subject | Astrochemistry | en_HK |
dc.subject | Circumstellar matter | en_HK |
dc.subject | Infrared: ISM | en_HK |
dc.subject | ISM: lines and bands | en_HK |
dc.subject | Planetary nebulae: general | en_HK |
dc.subject | Stars: AGB and post-AGB | en_HK |
dc.title | Aromatic, aliphatic, and the unidentified 21 micron emission features in proto-planetary nebulae | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1743-9213&volume=4&issue=S251&spage=213&epage=214&date=2008&atitle=Aromatic,+aliphatic,+and+the+unidentified+21+micron+emission+features+in+proto-planetary+nebulae | - |
dc.identifier.email | Kwok, S: deannote@hku.hk | en_HK |
dc.identifier.authority | Kwok, S=rp00716 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1017/S1743921308021583 | en_HK |
dc.identifier.scopus | eid_2-s2.0-53349117820 | en_HK |
dc.identifier.hkuros | 181604 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-53349117820&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 4 | en_HK |
dc.identifier.issue | S251 | en_HK |
dc.identifier.spage | 213 | en_HK |
dc.identifier.epage | 214 | en_HK |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Hrivnak, BJ=35613962100 | en_HK |
dc.identifier.scopusauthorid | Volk, K=7006571965 | en_HK |
dc.identifier.scopusauthorid | Geballe, TR=7103289480 | en_HK |
dc.identifier.scopusauthorid | Kwok, S=22980498300 | en_HK |
dc.identifier.issnl | 1743-9213 | - |