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Article: Trace of planetary nebula evolution by distance-independent parameters

TitleTrace of planetary nebula evolution by distance-independent parameters
Authors
KeywordsDistance Scale
Planetary Nebulae: General
Stars: Evolution
Issue Date1993
Citation
Astrophysical Journal, Supplement Series, 1993, v. 88 n. 1, p. 137-167 How to Cite?
AbstractUsing existing infrared and radio data on a sample of 432 planetary nebulae, we have derived a number of distance-independent parameters for comparison with evolutionary models of planetary nebulae. We find that many of the observed properties of planetary nebulae can be explained by current central star evolutionary models, even if the time scales are subject to significant change by a factor of up to an order of magnitude. Specifically, we find that the evolutionary tracks are well separated in the radio surface brightness-central star temperature plane, therefore allowing us to determine the core mass of individual planetary nebulae. We also obtain the luminosity and gravity of the central stars of individual nebulae, from their temperature and core mass, without relying on the distance assumptions. We find our results of the core mass are in good agreement with those of Mendez, Kudritzki, & Herrero and Tylenda et al. A systematic, large discrepancy is found between the luminosity found in this work and that found by Gathier & Pottasch.
Persistent Identifierhttp://hdl.handle.net/10722/179633
ISSN
2015 Impact Factor: 11.257
2015 SCImago Journal Rankings: 6.522

 

DC FieldValueLanguage
dc.contributor.authorZhang, CYen_US
dc.contributor.authorKwok, Sen_US
dc.date.accessioned2012-12-19T10:02:10Z-
dc.date.available2012-12-19T10:02:10Z-
dc.date.issued1993en_US
dc.identifier.citationAstrophysical Journal, Supplement Series, 1993, v. 88 n. 1, p. 137-167en_US
dc.identifier.issn0067-0049en_US
dc.identifier.urihttp://hdl.handle.net/10722/179633-
dc.description.abstractUsing existing infrared and radio data on a sample of 432 planetary nebulae, we have derived a number of distance-independent parameters for comparison with evolutionary models of planetary nebulae. We find that many of the observed properties of planetary nebulae can be explained by current central star evolutionary models, even if the time scales are subject to significant change by a factor of up to an order of magnitude. Specifically, we find that the evolutionary tracks are well separated in the radio surface brightness-central star temperature plane, therefore allowing us to determine the core mass of individual planetary nebulae. We also obtain the luminosity and gravity of the central stars of individual nebulae, from their temperature and core mass, without relying on the distance assumptions. We find our results of the core mass are in good agreement with those of Mendez, Kudritzki, & Herrero and Tylenda et al. A systematic, large discrepancy is found between the luminosity found in this work and that found by Gathier & Pottasch.en_US
dc.languageengen_US
dc.relation.ispartofAstrophysical Journal, Supplement Seriesen_US
dc.subjectDistance Scaleen_US
dc.subjectPlanetary Nebulae: Generalen_US
dc.subjectStars: Evolutionen_US
dc.titleTrace of planetary nebula evolution by distance-independent parametersen_US
dc.typeArticleen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0000353727en_US
dc.identifier.volume88en_US
dc.identifier.issue1en_US
dc.identifier.spage137en_US
dc.identifier.epage167en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhang, CY=38260889100en_US
dc.identifier.scopusauthoridKwok, S=22980498300en_US

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