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Article: Chemical evolution of carbonaceous materials in the last stages of stellar evolution
Title | Chemical evolution of carbonaceous materials in the last stages of stellar evolution |
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Authors | |
Keywords | Infrared: Ism: Lines And Bands Infrared: Stars Ism: Planetary Nebulae: General Stars: Agb And Post-Agb Stars: Circumstellar Matter |
Issue Date | 1999 |
Publisher | E D P Sciences. The Journal's web site is located at http://www.aanda.org |
Citation | Astronomy And Astrophysics, 1999, v. 350 n. 3, p. L35-L38 How to Cite? |
Abstract | The out-of-plane bending modes of aromatic C-H bond at 11.3, 12.1, 12.4, and 13.3 μm were detected in the ISO SWS spectra of the proto-planetary nebulae IRAS 07134+1005 and IRAS 22574+6609. In addition, unidentified emission features at 17.8, 18.9, and 19.1 μm were detected in the SWS01 and SWS06 spectra of IRAS 07134+1005. The similar strengths of the 12.1, 12.4, and 13.3 μm features relative to the 11.3 μm feature, together with the presence of strong aliphatic CH bands at 3.4 and 6.9 μm, demonstrate a lower aromaticitiy of the emitting material, compared to those at the later planetary nebulae stage. This suggests a chemical and physical evolution of the carbonaceous dust during the transition between these two phases. |
Persistent Identifier | http://hdl.handle.net/10722/179645 |
ISSN | 2023 Impact Factor: 5.4 2023 SCImago Journal Rankings: 1.896 |
References |
DC Field | Value | Language |
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dc.contributor.author | Kwok, S | en_US |
dc.contributor.author | Volk, K | en_US |
dc.contributor.author | Hrivnak, BJ | en_US |
dc.date.accessioned | 2012-12-19T10:02:14Z | - |
dc.date.available | 2012-12-19T10:02:14Z | - |
dc.date.issued | 1999 | en_US |
dc.identifier.citation | Astronomy And Astrophysics, 1999, v. 350 n. 3, p. L35-L38 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/179645 | - |
dc.description.abstract | The out-of-plane bending modes of aromatic C-H bond at 11.3, 12.1, 12.4, and 13.3 μm were detected in the ISO SWS spectra of the proto-planetary nebulae IRAS 07134+1005 and IRAS 22574+6609. In addition, unidentified emission features at 17.8, 18.9, and 19.1 μm were detected in the SWS01 and SWS06 spectra of IRAS 07134+1005. The similar strengths of the 12.1, 12.4, and 13.3 μm features relative to the 11.3 μm feature, together with the presence of strong aliphatic CH bands at 3.4 and 6.9 μm, demonstrate a lower aromaticitiy of the emitting material, compared to those at the later planetary nebulae stage. This suggests a chemical and physical evolution of the carbonaceous dust during the transition between these two phases. | en_US |
dc.language | eng | en_US |
dc.publisher | E D P Sciences. The Journal's web site is located at http://www.aanda.org | en_US |
dc.relation.ispartof | Astronomy and Astrophysics | en_US |
dc.subject | Infrared: Ism: Lines And Bands | en_US |
dc.subject | Infrared: Stars | en_US |
dc.subject | Ism: Planetary Nebulae: General | en_US |
dc.subject | Stars: Agb And Post-Agb | en_US |
dc.subject | Stars: Circumstellar Matter | en_US |
dc.title | Chemical evolution of carbonaceous materials in the last stages of stellar evolution | en_US |
dc.type | Article | en_US |
dc.identifier.email | Kwok, S: deannote@hku.hk | en_US |
dc.identifier.authority | Kwok, S=rp00716 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0011817813 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0011817813&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 350 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | L35 | en_US |
dc.identifier.epage | L38 | en_US |
dc.publisher.place | France | en_US |
dc.identifier.scopusauthorid | Kwok, S=22980498300 | en_US |
dc.identifier.scopusauthorid | Volk, K=7006571965 | en_US |
dc.identifier.scopusauthorid | Hrivnak, BJ=35613962100 | en_US |
dc.identifier.issnl | 0004-6361 | - |