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Article: Probing the nebular thermal structure using the he i recombination spectrum and evidence against temperature fluctuations and density inhomogeneities

TitleProbing the nebular thermal structure using the he i recombination spectrum and evidence against temperature fluctuations and density inhomogeneities
Authors
Issue Date2006
Citation
Eso Astrophysics Symposia, 2006, v. 2006, p. 190-191 How to Cite?
AbstractA long-standing problem in nebular astrophysics has been that heavy element abundances derived from collisionally excited lines (CELs) are systematically lower than those derived from optical recombination lines (ORLs). A chemically homogeneous nebula with temperature and density variations fails to account for the discrepancy (c.f. [3]). Instead detailed multi-waveband analyses of a large sample point to the presence of H-deficient condensations embedded in diffuse nebulae [2,8,9]. The 2-abundance model, first proposed by Liu et al. [4], predicts that 2006 Springer.
Persistent Identifierhttp://hdl.handle.net/10722/175034
ISSN
2012 SCImago Journal Rankings: 0.102
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, Yen_US
dc.contributor.authorLiu, XWen_US
dc.contributor.authorLiu, Yen_US
dc.date.accessioned2012-11-26T08:48:52Z-
dc.date.available2012-11-26T08:48:52Z-
dc.date.issued2006en_US
dc.identifier.citationEso Astrophysics Symposia, 2006, v. 2006, p. 190-191en_US
dc.identifier.issn1431-2433en_US
dc.identifier.urihttp://hdl.handle.net/10722/175034-
dc.description.abstractA long-standing problem in nebular astrophysics has been that heavy element abundances derived from collisionally excited lines (CELs) are systematically lower than those derived from optical recombination lines (ORLs). A chemically homogeneous nebula with temperature and density variations fails to account for the discrepancy (c.f. [3]). Instead detailed multi-waveband analyses of a large sample point to the presence of H-deficient condensations embedded in diffuse nebulae [2,8,9]. The 2-abundance model, first proposed by Liu et al. [4], predicts that 2006 Springer.en_US
dc.languageengen_US
dc.relation.ispartofESO Astrophysics Symposiaen_US
dc.titleProbing the nebular thermal structure using the he i recombination spectrum and evidence against temperature fluctuations and density inhomogeneitiesen_US
dc.typeArticleen_US
dc.identifier.emailZhang, Y: zhangy96@hku.hken_US
dc.identifier.authorityZhang, Y=rp00841en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/3-540-34270-2_24en_US
dc.identifier.scopuseid_2-s2.0-33748904548en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33748904548&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume2006en_US
dc.identifier.spage190en_US
dc.identifier.epage191en_US
dc.publisher.placeGermanyen_US
dc.identifier.scopusauthoridZhang, Y=23768446500en_US
dc.identifier.scopusauthoridLiu, XW=7409287288en_US
dc.identifier.scopusauthoridLiu, Y=36064406700en_US
dc.identifier.citeulike798162-

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