Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å

Autores
Mauas, Pablo Jacobo David; Fernández Borda, Roberto; Luoni, Maria Luisa
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a simple atomic model for the synthesis of the Al I resonance lines, near the Ca II H and K lines. We study whether the computed profiles are influenced by the choice of the atomic parameters and find that, although several cross sections are not known accurately, the line profiles do not depend on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not to be included in the model, in order to reduce as much as possible the computing time. We compare the profiles computed for a standard model of the quiet solar atmosphere with the observations and find very good agreement. We found that the inclusion of the proper line-blanketing opacity is fundamental for an accurate calculation of the ionization balance and that irradiation by UV lines originating in the transition region does not affect the AI I emission.
Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Fernández Borda, Roberto. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Luoni, Maria Luisa. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Materia
ATOMIC PROCESSES
LINE: FORMATION
LINE: PROFILES
STARS: CHROMOSPHERES
SUN: CHROMOSPHERE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/218138
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 ÅMauas, Pablo Jacobo DavidFernández Borda, RobertoLuoni, Maria LuisaATOMIC PROCESSESLINE: FORMATIONLINE: PROFILESSTARS: CHROMOSPHERESSUN: CHROMOSPHEREhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a simple atomic model for the synthesis of the Al I resonance lines, near the Ca II H and K lines. We study whether the computed profiles are influenced by the choice of the atomic parameters and find that, although several cross sections are not known accurately, the line profiles do not depend on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not to be included in the model, in order to reduce as much as possible the computing time. We compare the profiles computed for a standard model of the quiet solar atmosphere with the observations and find very good agreement. We found that the inclusion of the proper line-blanketing opacity is fundamental for an accurate calculation of the ionization balance and that irradiation by UV lines originating in the transition region does not affect the AI I emission.Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Fernández Borda, Roberto. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Luoni, Maria Luisa. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaIOP Publishing2002-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/218138Mauas, Pablo Jacobo David; Fernández Borda, Roberto; Luoni, Maria Luisa; Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å; IOP Publishing; Astrophysical Journal Supplement Series; 142; 2; 10-2002; 285-2930067-0049CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1086/342042info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1086/342042info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:52:29Zoai:ri.conicet.gov.ar:11336/218138instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:52:29.933CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
title Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
spellingShingle Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
Mauas, Pablo Jacobo David
ATOMIC PROCESSES
LINE: FORMATION
LINE: PROFILES
STARS: CHROMOSPHERES
SUN: CHROMOSPHERE
title_short Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
title_full Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
title_fullStr Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
title_full_unstemmed Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
title_sort Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å
dc.creator.none.fl_str_mv Mauas, Pablo Jacobo David
Fernández Borda, Roberto
Luoni, Maria Luisa
author Mauas, Pablo Jacobo David
author_facet Mauas, Pablo Jacobo David
Fernández Borda, Roberto
Luoni, Maria Luisa
author_role author
author2 Fernández Borda, Roberto
Luoni, Maria Luisa
author2_role author
author
dc.subject.none.fl_str_mv ATOMIC PROCESSES
LINE: FORMATION
LINE: PROFILES
STARS: CHROMOSPHERES
SUN: CHROMOSPHERE
topic ATOMIC PROCESSES
LINE: FORMATION
LINE: PROFILES
STARS: CHROMOSPHERES
SUN: CHROMOSPHERE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a simple atomic model for the synthesis of the Al I resonance lines, near the Ca II H and K lines. We study whether the computed profiles are influenced by the choice of the atomic parameters and find that, although several cross sections are not known accurately, the line profiles do not depend on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not to be included in the model, in order to reduce as much as possible the computing time. We compare the profiles computed for a standard model of the quiet solar atmosphere with the observations and find very good agreement. We found that the inclusion of the proper line-blanketing opacity is fundamental for an accurate calculation of the ionization balance and that irradiation by UV lines originating in the transition region does not affect the AI I emission.
Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Fernández Borda, Roberto. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Luoni, Maria Luisa. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
description We present a simple atomic model for the synthesis of the Al I resonance lines, near the Ca II H and K lines. We study whether the computed profiles are influenced by the choice of the atomic parameters and find that, although several cross sections are not known accurately, the line profiles do not depend on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not to be included in the model, in order to reduce as much as possible the computing time. We compare the profiles computed for a standard model of the quiet solar atmosphere with the observations and find very good agreement. We found that the inclusion of the proper line-blanketing opacity is fundamental for an accurate calculation of the ionization balance and that irradiation by UV lines originating in the transition region does not affect the AI I emission.
publishDate 2002
dc.date.none.fl_str_mv 2002-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/218138
Mauas, Pablo Jacobo David; Fernández Borda, Roberto; Luoni, Maria Luisa; Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å; IOP Publishing; Astrophysical Journal Supplement Series; 142; 2; 10-2002; 285-293
0067-0049
CONICET Digital
CONICET
url http://hdl.handle.net/11336/218138
identifier_str_mv Mauas, Pablo Jacobo David; Fernández Borda, Roberto; Luoni, Maria Luisa; Blue lines as chromospheric diagnostics: The Al I lines at 3944 and 3961 Å; IOP Publishing; Astrophysical Journal Supplement Series; 142; 2; 10-2002; 285-293
0067-0049
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1086/342042
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1086/342042
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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