The iron abundance in galactic planetary nebulae ⃰

We constrain the iron abundance in a sample of 33 low-ionization Galactic planetary nebulae (PNe) using [Fe III] lines and correcting for the contribution of higher ionization states with ionization correction factors that take into account uncertainties in the atomic data. We find very low iron abu...

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Detalhes bibliográficos
Autores: GLORIA INMACULADA DELGADO INGLADA, Monica Rodriguez
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2009
País:México
Recursos:Instituto Nacional de Astrofísica, Óptica y Electrónica
Repositório:Repositorio Institucional del INAOE
Idioma:inglês
OAI Identifier:oai:inaoe.repositorioinstitucional.mx:1009/1367
Acesso em linha:http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1367
Access Level:Acceso aberto
Palavra-chave:info:eu-repo/classification/Inspec/Planetary nebulae: general
info:eu-repo/classification/Inspec/ISM: abundances
info:eu-repo/classification/Inspec/Dust, extinction
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/21
id MX_3ef9d1883ea556a8a434f294cc3f5e0c
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network_acronym_str MX
network_name_str México
repository_id_str
spelling The iron abundance in galactic planetary nebulae ⃰GLORIA INMACULADA DELGADO INGLADAMonica Rodriguezinfo:eu-repo/classification/Inspec/Planetary nebulae: generalinfo:eu-repo/classification/Inspec/ISM: abundancesinfo:eu-repo/classification/Inspec/Dust, extinctioninfo:eu-repo/classification/cti/1info:eu-repo/classification/cti/21info:eu-repo/classification/cti/21We constrain the iron abundance in a sample of 33 low-ionization Galactic planetary nebulae (PNe) using [Fe III] lines and correcting for the contribution of higher ionization states with ionization correction factors that take into account uncertainties in the atomic data. We find very low iron abundances in all the objects, suggesting that more than 90% of their iron atoms are condensed onto dust grains. This number is based on the solar iron abundance and implies a lower limit on the dust-to-gas mass ratio, solely due to iron, of Mdust/Mgas ≥ 1.3 × 10⁻³ for our sample. The depletion factors of different PNe cover about two orders of magnitude, probably reflecting differences in the formation, growth, or destruction of their dust grains. However, we do not find any systematic difference between the gaseous iron abundances calculated for C-rich and O-rich PNe, suggesting similar iron depletion efficiencies in both environments. The iron abundances of our sample PNe are similar to those derived following the same procedure for a group of 10 Galactic H II regions. These high depletion factors argue for high depletion efficiencies of refractory elements onto dust grains both in molecular clouds and asymptotic giant brach stars, and low dust destruction efficiencies both in interstellar and circumstellar ionized gas.The Astrophysical Journal2009info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1367reponame:Repositorio Institucional del INAOEinstname:Instituto Nacional de Astrofísica, Óptica y Electrónicainstacron:INAOEengcitation:Delgado Inglada, G. and Rodríguez, M., (2009). The iron abundance in galactic planetary nebulae ⃰, The Astrophysical Journal. Vol.694(2):1-15info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0oai:inaoe.repositorioinstitucional.mx:1009/13672024-08-28T03:22:55Z
dc.title.none.fl_str_mv The iron abundance in galactic planetary nebulae ⃰
title The iron abundance in galactic planetary nebulae ⃰
spellingShingle The iron abundance in galactic planetary nebulae ⃰
GLORIA INMACULADA DELGADO INGLADA
info:eu-repo/classification/Inspec/Planetary nebulae: general
info:eu-repo/classification/Inspec/ISM: abundances
info:eu-repo/classification/Inspec/Dust, extinction
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/21
info:eu-repo/classification/cti/21
title_short The iron abundance in galactic planetary nebulae ⃰
title_full The iron abundance in galactic planetary nebulae ⃰
title_fullStr The iron abundance in galactic planetary nebulae ⃰
title_full_unstemmed The iron abundance in galactic planetary nebulae ⃰
title_sort The iron abundance in galactic planetary nebulae ⃰
dc.creator.none.fl_str_mv GLORIA INMACULADA DELGADO INGLADA
Monica Rodriguez
author GLORIA INMACULADA DELGADO INGLADA
author_facet GLORIA INMACULADA DELGADO INGLADA
Monica Rodriguez
author_role author
author2 Monica Rodriguez
author2_role author
dc.subject.none.fl_str_mv info:eu-repo/classification/Inspec/Planetary nebulae: general
info:eu-repo/classification/Inspec/ISM: abundances
info:eu-repo/classification/Inspec/Dust, extinction
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/21
info:eu-repo/classification/cti/21
topic info:eu-repo/classification/Inspec/Planetary nebulae: general
info:eu-repo/classification/Inspec/ISM: abundances
info:eu-repo/classification/Inspec/Dust, extinction
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/21
info:eu-repo/classification/cti/21
description We constrain the iron abundance in a sample of 33 low-ionization Galactic planetary nebulae (PNe) using [Fe III] lines and correcting for the contribution of higher ionization states with ionization correction factors that take into account uncertainties in the atomic data. We find very low iron abundances in all the objects, suggesting that more than 90% of their iron atoms are condensed onto dust grains. This number is based on the solar iron abundance and implies a lower limit on the dust-to-gas mass ratio, solely due to iron, of Mdust/Mgas ≥ 1.3 × 10⁻³ for our sample. The depletion factors of different PNe cover about two orders of magnitude, probably reflecting differences in the formation, growth, or destruction of their dust grains. However, we do not find any systematic difference between the gaseous iron abundances calculated for C-rich and O-rich PNe, suggesting similar iron depletion efficiencies in both environments. The iron abundances of our sample PNe are similar to those derived following the same procedure for a group of 10 Galactic H II regions. These high depletion factors argue for high depletion efficiencies of refractory elements onto dust grains both in molecular clouds and asymptotic giant brach stars, and low dust destruction efficiencies both in interstellar and circumstellar ionized gas.
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1367
url http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1367
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv citation:Delgado Inglada, G. and Rodríguez, M., (2009). The iron abundance in galactic planetary nebulae ⃰, The Astrophysical Journal. Vol.694(2):1-15
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The Astrophysical Journal
publisher.none.fl_str_mv The Astrophysical Journal
dc.source.none.fl_str_mv reponame:Repositorio Institucional del INAOE
instname:Instituto Nacional de Astrofísica, Óptica y Electrónica
instacron:INAOE
instname_str Instituto Nacional de Astrofísica, Óptica y Electrónica
instacron_str INAOE
institution INAOE
reponame_str Repositorio Institucional del INAOE
collection Repositorio Institucional del INAOE
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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