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

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 surfa...

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Autores principales: Mercanti, Lorena Verónica, Cidale, Lydia Sonia, Torres, Andrea Fabiana, Cochetti, Yanina Roxana, Kraus, M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/166629
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-166629
record_format dspace
spelling I19-R120-10915-1666292024-05-31T20:02:11Z http://sedici.unlp.edu.ar/handle/10915/166629 Modeling of emission lines in low-ionization winds of B-type stars Mercanti, Lorena Verónica Cidale, Lydia Sonia Torres, Andrea Fabiana Cochetti, Yanina Roxana Kraus, M. 2021 2024-05-31T17:38:54Z en Ciencias Astronómicas stars: emission-line, Be circumstellar matter radiative transfer 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 Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 83-85
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
spellingShingle Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
Mercanti, Lorena Verónica
Cidale, Lydia Sonia
Torres, Andrea Fabiana
Cochetti, Yanina Roxana
Kraus, M.
Modeling of emission lines in low-ionization winds of B-type stars
topic_facet Ciencias Astronómicas
stars: emission-line, Be
circumstellar matter
radiative transfer
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.
format Articulo
Articulo
author Mercanti, Lorena Verónica
Cidale, Lydia Sonia
Torres, Andrea Fabiana
Cochetti, Yanina Roxana
Kraus, M.
author_facet Mercanti, Lorena Verónica
Cidale, Lydia Sonia
Torres, Andrea Fabiana
Cochetti, Yanina Roxana
Kraus, M.
author_sort Mercanti, Lorena Verónica
title Modeling of emission lines in low-ionization winds of B-type stars
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
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/166629
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AT cidalelydiasonia modelingofemissionlinesinlowionizationwindsofbtypestars
AT torresandreafabiana modelingofemissionlinesinlowionizationwindsofbtypestars
AT cochettiyaninaroxana modelingofemissionlinesinlowionizationwindsofbtypestars
AT krausm modelingofemissionlinesinlowionizationwindsofbtypestars
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