Modeling of emission lines in low-ionization winds of B-type stars

Autores
Mercanti, Lorena Verónica; Cidale, Lydia Sonia; Torres, Andrea Fabiana; Cochetti, Yanina Roxana; Kraus, M.
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Motivated by the availability of new observational material provided by Gaia mission, and focused on peculiar B-type stars, we develop a model to simulate the non-LTE line profiles of ionized elements such as Ca π and Mg II. The calculation is performed for a range of effective temperature and surface gravity, for different temperature and velocity distributions of the circumstellar material as well as different stellar mass-loss rates. The obtained synthetic profiles are capable of reproducing the general features of the observed spectral lines, such as P Cygni-type profiles.
En el contexto de la aparición del nuevo material observacional provisto por la misión espacial Gaia, y enfocado en estrellas de tipo espectral B peculiares, se desarrolla un modelo para simular el espectro de líneas de elementos una vez ionizados como Ca π y Mg π fuera del equilibrio termodinámico local. El cálculo se realiza para un rango de temperaturas efectivas y gravedades superficiales, para diferentes distribuciones de temperatura y velocidad en el material circunestelar y distintas tasas de pérdida de masa. Los perfiles sintéticos obtenidos son capaces de reproducir los rasgos generales de las líneas espectrales observadas como, por ejemplo, perfiles P Cygni.
Asociación Argentina de Astronomía
Materia
Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/166629

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Modeling of emission lines in low-ionization winds of B-type starsMercanti, Lorena VerónicaCidale, Lydia SoniaTorres, Andrea FabianaCochetti, Yanina RoxanaKraus, M.Ciencias Astronómicasstars: emission-line, Becircumstellar matterradiative transferMotivated by the availability of new observational material provided by Gaia mission, and focused on peculiar B-type stars, we develop a model to simulate the non-LTE line profiles of ionized elements such as Ca π and Mg II. The calculation is performed for a range of effective temperature and surface gravity, for different temperature and velocity distributions of the circumstellar material as well as different stellar mass-loss rates. The obtained synthetic profiles are capable of reproducing the general features of the observed spectral lines, such as P Cygni-type profiles.En el contexto de la aparición del nuevo material observacional provisto por la misión espacial Gaia, y enfocado en estrellas de tipo espectral B peculiares, se desarrolla un modelo para simular el espectro de líneas de elementos una vez ionizados como Ca π y Mg π fuera del equilibrio termodinámico local. El cálculo se realiza para un rango de temperaturas efectivas y gravedades superficiales, para diferentes distribuciones de temperatura y velocidad en el material circunestelar y distintas tasas de pérdida de masa. Los perfiles sintéticos obtenidos son capaces de reproducir los rasgos generales de las líneas espectrales observadas como, por ejemplo, perfiles P Cygni.Asociación Argentina de Astronomía2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf83-85http://sedici.unlp.edu.ar/handle/10915/166629enginfo:eu-repo/semantics/altIdentifier/issn/1669-9521info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:44:21Zoai:sedici.unlp.edu.ar:10915/166629Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:44:21.914SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Modeling of emission lines in low-ionization winds of B-type stars
title Modeling of emission lines in low-ionization winds of B-type stars
spellingShingle Modeling of emission lines in low-ionization winds of B-type stars
Mercanti, Lorena Verónica
Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
title_short Modeling of emission lines in low-ionization winds of B-type stars
title_full Modeling of emission lines in low-ionization winds of B-type stars
title_fullStr Modeling of emission lines in low-ionization winds of B-type stars
title_full_unstemmed Modeling of emission lines in low-ionization winds of B-type stars
title_sort Modeling of emission lines in low-ionization winds of B-type stars
dc.creator.none.fl_str_mv Mercanti, Lorena Verónica
Cidale, Lydia Sonia
Torres, Andrea Fabiana
Cochetti, Yanina Roxana
Kraus, M.
author Mercanti, Lorena Verónica
author_facet Mercanti, Lorena Verónica
Cidale, Lydia Sonia
Torres, Andrea Fabiana
Cochetti, Yanina Roxana
Kraus, M.
author_role author
author2 Cidale, Lydia Sonia
Torres, Andrea Fabiana
Cochetti, Yanina Roxana
Kraus, M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
topic Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
dc.description.none.fl_txt_mv Motivated by the availability of new observational material provided by Gaia mission, and focused on peculiar B-type stars, we develop a model to simulate the non-LTE line profiles of ionized elements such as Ca π and Mg II. The calculation is performed for a range of effective temperature and surface gravity, for different temperature and velocity distributions of the circumstellar material as well as different stellar mass-loss rates. The obtained synthetic profiles are capable of reproducing the general features of the observed spectral lines, such as P Cygni-type profiles.
En el contexto de la aparición del nuevo material observacional provisto por la misión espacial Gaia, y enfocado en estrellas de tipo espectral B peculiares, se desarrolla un modelo para simular el espectro de líneas de elementos una vez ionizados como Ca π y Mg π fuera del equilibrio termodinámico local. El cálculo se realiza para un rango de temperaturas efectivas y gravedades superficiales, para diferentes distribuciones de temperatura y velocidad en el material circunestelar y distintas tasas de pérdida de masa. Los perfiles sintéticos obtenidos son capaces de reproducir los rasgos generales de las líneas espectrales observadas como, por ejemplo, perfiles P Cygni.
Asociación Argentina de Astronomía
description Motivated by the availability of new observational material provided by Gaia mission, and focused on peculiar B-type stars, we develop a model to simulate the non-LTE line profiles of ionized elements such as Ca π and Mg II. The calculation is performed for a range of effective temperature and surface gravity, for different temperature and velocity distributions of the circumstellar material as well as different stellar mass-loss rates. The obtained synthetic profiles are capable of reproducing the general features of the observed spectral lines, such as P Cygni-type profiles.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/166629
url http://sedici.unlp.edu.ar/handle/10915/166629
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1669-9521
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
83-85
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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