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Article: A spitzer/infrared spectrograph spectral study of a sample of galactic carbon-rich proto-planetary nebulae
| Title | A spitzer/infrared spectrograph spectral study of a sample of galactic carbon-rich proto-planetary nebulae | ||||||
|---|---|---|---|---|---|---|---|
| Authors | |||||||
| Keywords | Circumstellar matter Infrared:stars Post-AGB Stars:AGB | ||||||
| Issue Date | 2010 | ||||||
| Publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205 | ||||||
| Citation | Astrophysical Journal Letters, 2010, v. 725 n. 1, p. 990-1001 How to Cite? | ||||||
| Abstract | Recent infrared spectroscopic observations have shown that proto-planetary nebulae (PPNs) are sites of active synthesis of organic compounds in the late stages of stellar evolution. This paper presents a study of Spitzer/Infrared Spectrograph spectra for a sample of carbon-rich PPNs, all except one of which show the unidentified 21μm emission feature. The strengths of the aromatic infrared band, 21μm, and 30μm features are obtained by decomposition of the spectra. The observed variations in the strengths and peak wavelengths of the features support the model that the newly synthesized organic compounds gradually change from aliphatic to aromatic characteristics as stars evolve from PPNs to planetary nebulae. © 2010. The American Astronomical Society. | ||||||
| Persistent Identifier | http://hdl.handle.net/10722/135357 | ||||||
| ISSN | 2023 Impact Factor: 8.8 2023 SCImago Journal Rankings: 2.766 | ||||||
| ISI Accession Number ID |
Funding Information: This work was supported by a grant to S.K. from the Research Grants Council of the Hong Kong Special Administrative Region, China (project no. HKU 7020/08P) and a grant to Y.Z. from the Seed Funding Programme for Basic Research in HKU (200909159007). | ||||||
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| Grants |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Zhang, Y | en_HK |
| dc.contributor.author | Kwok, S | en_HK |
| dc.contributor.author | Hrivnak, BJ | en_HK |
| dc.date.accessioned | 2011-07-27T01:34:08Z | - |
| dc.date.available | 2011-07-27T01:34:08Z | - |
| dc.date.issued | 2010 | en_HK |
| dc.identifier.citation | Astrophysical Journal Letters, 2010, v. 725 n. 1, p. 990-1001 | en_HK |
| dc.identifier.issn | 2041-8205 | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/135357 | - |
| dc.description.abstract | Recent infrared spectroscopic observations have shown that proto-planetary nebulae (PPNs) are sites of active synthesis of organic compounds in the late stages of stellar evolution. This paper presents a study of Spitzer/Infrared Spectrograph spectra for a sample of carbon-rich PPNs, all except one of which show the unidentified 21μm emission feature. The strengths of the aromatic infrared band, 21μm, and 30μm features are obtained by decomposition of the spectra. The observed variations in the strengths and peak wavelengths of the features support the model that the newly synthesized organic compounds gradually change from aliphatic to aromatic characteristics as stars evolve from PPNs to planetary nebulae. © 2010. The American Astronomical Society. | en_HK |
| dc.language | eng | en_US |
| dc.publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205 | en_HK |
| dc.relation.ispartof | Astrophysical Journal Letters | en_HK |
| dc.rights | The Astrophysical Journal. Copyright © Institute of Physics Publishing, Inc. | - |
| dc.subject | Circumstellar matter | en_HK |
| dc.subject | Infrared:stars | en_HK |
| dc.subject | Post-AGB | en_HK |
| dc.subject | Stars:AGB | en_HK |
| dc.title | A spitzer/infrared spectrograph spectral study of a sample of galactic carbon-rich proto-planetary nebulae | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=725&issue=1&spage=990&epage=1001&date=2010&atitle=A+spitzer/infrared+spectrograph+spectral+study+of+a+sample+of+galactic+carbon-rich+proto-planetary+nebulae | - |
| dc.identifier.email | Zhang, Y: zhangy96@hku.hk | en_HK |
| dc.identifier.email | Kwok, S: deannote@hku.hk | en_HK |
| dc.identifier.authority | Zhang, Y=rp00841 | en_HK |
| dc.identifier.authority | Kwok, S=rp00716 | en_HK |
| dc.description.nature | link_to_subscribed_fulltext | - |
| dc.identifier.doi | 10.1088/0004-637X/725/1/990 | en_HK |
| dc.identifier.scopus | eid_2-s2.0-78650021713 | en_HK |
| dc.identifier.hkuros | 186110 | en_US |
| dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-78650021713&selection=ref&src=s&origin=recordpage | en_HK |
| dc.identifier.volume | 725 | en_HK |
| dc.identifier.issue | 1 | en_HK |
| dc.identifier.spage | 990 | en_HK |
| dc.identifier.epage | 1001 | en_HK |
| dc.identifier.eissn | 1538-4357 | - |
| dc.identifier.isi | WOS:000284576700104 | - |
| dc.publisher.place | United Kingdom | en_HK |
| dc.relation.project | The Infrared Morphologies of Planetary Nebulae | - |
| dc.identifier.scopusauthorid | Zhang, Y=23768446500 | en_HK |
| dc.identifier.scopusauthorid | Kwok, S=22980498300 | en_HK |
| dc.identifier.scopusauthorid | Hrivnak, BJ=35613962100 | en_HK |