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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/98799
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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 Técnicas2025-09-29T10:05:02Zoai: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:34982025-09-29 10:05:02.831CONICET 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 |
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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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13.070432 |