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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/166629
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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) |
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application/pdf 83-85 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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