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Article: A spitzer/infrared spectrograph spectral study of a sample of galactic carbon-rich proto-planetary nebulae

TitleA spitzer/infrared spectrograph spectral study of a sample of galactic carbon-rich proto-planetary nebulae
Authors
KeywordsCircumstellar matter
Infrared:stars
Post-AGB
Stars:AGB
Issue Date2010
PublisherInstitute 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?
AbstractRecent 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 Identifierhttp://hdl.handle.net/10722/135357
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
Funding AgencyGrant Number
Council of the Hong Kong Special Administrative Region, ChinaHKU 7020/08P
Seed Funding Programme for Basic Research in HKU200909159007
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).

References

 

DC FieldValueLanguage
dc.contributor.authorZhang, Yen_HK
dc.contributor.authorKwok, Sen_HK
dc.contributor.authorHrivnak, BJen_HK
dc.date.accessioned2011-07-27T01:34:08Z-
dc.date.available2011-07-27T01:34:08Z-
dc.date.issued2010en_HK
dc.identifier.citationAstrophysical Journal Letters, 2010, v. 725 n. 1, p. 990-1001en_HK
dc.identifier.issn2041-8205en_HK
dc.identifier.urihttp://hdl.handle.net/10722/135357-
dc.description.abstractRecent 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.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_HK
dc.relation.ispartofAstrophysical Journal Lettersen_HK
dc.rightsThe Astrophysical Journal. Copyright © Institute of Physics Publishing, Inc.-
dc.subjectCircumstellar matteren_HK
dc.subjectInfrared:starsen_HK
dc.subjectPost-AGBen_HK
dc.subjectStars:AGBen_HK
dc.titleA spitzer/infrared spectrograph spectral study of a sample of galactic carbon-rich proto-planetary nebulaeen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://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.emailZhang, Y: zhangy96@hku.hken_HK
dc.identifier.emailKwok, S: deannote@hku.hken_HK
dc.identifier.authorityZhang, Y=rp00841en_HK
dc.identifier.authorityKwok, S=rp00716en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0004-637X/725/1/990en_HK
dc.identifier.scopuseid_2-s2.0-78650021713en_HK
dc.identifier.hkuros186110en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650021713&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume725en_HK
dc.identifier.issue1en_HK
dc.identifier.spage990en_HK
dc.identifier.epage1001en_HK
dc.identifier.eissn1538-4357-
dc.identifier.isiWOS:000284576700104-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridZhang, Y=23768446500en_HK
dc.identifier.scopusauthoridKwok, S=22980498300en_HK
dc.identifier.scopusauthoridHrivnak, BJ=35613962100en_HK

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