Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å

Autores
Cincunegui, Carolina Cecilia; Mauas, Pablo Jacobo David
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a complete atomic model for Si I line synthesis. We study how the computed profiles of two blue lines of this atom 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 strongly on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not 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 confirm that irradiation by UV lines originating in the transition region above sunspot umbrae or plages strongly enhances the continuum between 1300 and 1700 Å, which is due to Si I bound-free transitions. If line fluxes typical of the impulsive phase of flares are assumed, the line profiles are also affected.
Fil: Cincunegui, Carolina Cecilia. 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: 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
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:11336/98799
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/98799
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 ÅCincunegui, Carolina CeciliaMauas, Pablo Jacobo DavidATOMIC PROCESSESLINE: FORMATIONLINE: PROFILESSTARS: CHROMOSPHERESSUN: CHROMOSPHEREhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a complete atomic model for Si I line synthesis. We study how the computed profiles of two blue lines of this atom 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 strongly on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not 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 confirm that irradiation by UV lines originating in the transition region above sunspot umbrae or plages strongly enhances the continuum between 1300 and 1700 Å, which is due to Si I bound-free transitions. If line fluxes typical of the impulsive phase of flares are assumed, the line profiles are also affected.Fil: Cincunegui, Carolina Cecilia. 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: 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; ArgentinaIOP Publishing2001-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/98799Cincunegui, Carolina Cecilia; Mauas, Pablo Jacobo David; Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å; IOP Publishing; Astrophysical Journal; 552; 2 PART 1; 5-2001; 877-8880004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1086/320566info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1086/320566info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:34:44Zoai:ri.conicet.gov.ar:11336/98799instacron: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 11:34:44.425CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
title Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
spellingShingle Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
Cincunegui, Carolina Cecilia
ATOMIC PROCESSES
LINE: FORMATION
LINE: PROFILES
STARS: CHROMOSPHERES
SUN: CHROMOSPHERE
title_short Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
title_full Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
title_fullStr Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
title_full_unstemmed Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
title_sort Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å
dc.creator.none.fl_str_mv Cincunegui, Carolina Cecilia
Mauas, Pablo Jacobo David
author Cincunegui, Carolina Cecilia
author_facet Cincunegui, Carolina Cecilia
Mauas, Pablo Jacobo David
author_role author
author2 Mauas, Pablo Jacobo David
author2_role 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 complete atomic model for Si I line synthesis. We study how the computed profiles of two blue lines of this atom 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 strongly on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not 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 confirm that irradiation by UV lines originating in the transition region above sunspot umbrae or plages strongly enhances the continuum between 1300 and 1700 Å, which is due to Si I bound-free transitions. If line fluxes typical of the impulsive phase of flares are assumed, the line profiles are also affected.
Fil: Cincunegui, Carolina Cecilia. 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: 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
description We present a complete atomic model for Si I line synthesis. We study how the computed profiles of two blue lines of this atom 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 strongly on them and are therefore useful as diagnostics of the atmospheric structure. We study which transitions need not 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 confirm that irradiation by UV lines originating in the transition region above sunspot umbrae or plages strongly enhances the continuum between 1300 and 1700 Å, which is due to Si I bound-free transitions. If line fluxes typical of the impulsive phase of flares are assumed, the line profiles are also affected.
publishDate 2001
dc.date.none.fl_str_mv 2001-05
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/11336/98799
Cincunegui, Carolina Cecilia; Mauas, Pablo Jacobo David; Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å; IOP Publishing; Astrophysical Journal; 552; 2 PART 1; 5-2001; 877-888
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/98799
identifier_str_mv Cincunegui, Carolina Cecilia; Mauas, Pablo Jacobo David; Blue lines as chromospheric diagnostics: The Si I lines at 3906 and 4103 Å; IOP Publishing; Astrophysical Journal; 552; 2 PART 1; 5-2001; 877-888
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1086/320566
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1086/320566
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
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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