Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour

Autores
Cochetti, Yanina Roxana; Granada, Anahi; Arias, María Laura; Torres, Andrea Fabiana; Arcos, Catalina
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The IR spectra of Be stars display numerous hydrogen recombination lines, constituting a great resource for obtaining information on the physical and dynamic structures of different regions within the circumstellar envelope. Nevertheless, this spectral region has not been analysed in depth, and there is a lack of synthetic spectra with which to compare observations. Therefore, we computed synthetic spectra with the HDUST code for different disc parameters. Here, we present our results on the spectral region that includes lines of the Brackett series. We discuss the dependence of the line series strengths on several parameters that describe the structure of the disc. We also compared model line profiles, fluxes, and EWs with observational data for two Be stars (MX Pup and π Aqr). Even though the synthetic spectra adequately fit our observations of both stars and allow us to constrain the parameters of the disc, there is a discrepancy with the observed data in the EW and flux measurements, especially in the case of MX Pup. It is possible that by including Brackett lines of higher terms or adding the analysis of other series, we may be able to better constrain the parameters of the observed disc.
Fil: Cochetti, Yanina Roxana. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Granada, Anahi. Universidad Nacional de Rio Negro. Sede Andina. Laboratorio de Procesamiento de Señales Aplicadas y Computacion de Alto Rendimiento.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Arias, María Laura. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Torres, Andrea Fabiana. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Arcos, Catalina. Universidad de Valparaíso; Chile
Materia
stars: early-type
stars: emission-line, Be
stars: individual: MX Pup, π Aqr
circumstellar matter
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/236247
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/236247
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviourCochetti, Yanina RoxanaGranada, AnahiArias, María LauraTorres, Andrea FabianaArcos, Catalinastars: early-typestars: emission-line, Bestars: individual: MX Pup, π Aqrcircumstellar matterhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The IR spectra of Be stars display numerous hydrogen recombination lines, constituting a great resource for obtaining information on the physical and dynamic structures of different regions within the circumstellar envelope. Nevertheless, this spectral region has not been analysed in depth, and there is a lack of synthetic spectra with which to compare observations. Therefore, we computed synthetic spectra with the HDUST code for different disc parameters. Here, we present our results on the spectral region that includes lines of the Brackett series. We discuss the dependence of the line series strengths on several parameters that describe the structure of the disc. We also compared model line profiles, fluxes, and EWs with observational data for two Be stars (MX Pup and π Aqr). Even though the synthetic spectra adequately fit our observations of both stars and allow us to constrain the parameters of the disc, there is a discrepancy with the observed data in the EW and flux measurements, especially in the case of MX Pup. It is possible that by including Brackett lines of higher terms or adding the analysis of other series, we may be able to better constrain the parameters of the observed disc.Fil: Cochetti, Yanina Roxana. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Granada, Anahi. Universidad Nacional de Rio Negro. Sede Andina. Laboratorio de Procesamiento de Señales Aplicadas y Computacion de Alto Rendimiento.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Arias, María Laura. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Torres, Andrea Fabiana. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Arcos, Catalina. Universidad de Valparaíso; ChileMDPI2023-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/236247Cochetti, Yanina Roxana; Granada, Anahi; Arias, María Laura; Torres, Andrea Fabiana; Arcos, Catalina; Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour; MDPI; Galaxies; 11; 4; 8-2023; 1-172075-4434CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-4434/11/4/90info:eu-repo/semantics/altIdentifier/doi/10.3390/galaxies11040090info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:08:19Zoai:ri.conicet.gov.ar:11336/236247instacron: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 10:08:19.247CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
title Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
spellingShingle Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
Cochetti, Yanina Roxana
stars: early-type
stars: emission-line, Be
stars: individual: MX Pup, π Aqr
circumstellar matter
title_short Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
title_full Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
title_fullStr Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
title_full_unstemmed Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
title_sort Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour
dc.creator.none.fl_str_mv Cochetti, Yanina Roxana
Granada, Anahi
Arias, María Laura
Torres, Andrea Fabiana
Arcos, Catalina
author Cochetti, Yanina Roxana
author_facet Cochetti, Yanina Roxana
Granada, Anahi
Arias, María Laura
Torres, Andrea Fabiana
Arcos, Catalina
author_role author
author2 Granada, Anahi
Arias, María Laura
Torres, Andrea Fabiana
Arcos, Catalina
author2_role author
author
author
author
dc.subject.none.fl_str_mv stars: early-type
stars: emission-line, Be
stars: individual: MX Pup, π Aqr
circumstellar matter
topic stars: early-type
stars: emission-line, Be
stars: individual: MX Pup, π Aqr
circumstellar matter
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The IR spectra of Be stars display numerous hydrogen recombination lines, constituting a great resource for obtaining information on the physical and dynamic structures of different regions within the circumstellar envelope. Nevertheless, this spectral region has not been analysed in depth, and there is a lack of synthetic spectra with which to compare observations. Therefore, we computed synthetic spectra with the HDUST code for different disc parameters. Here, we present our results on the spectral region that includes lines of the Brackett series. We discuss the dependence of the line series strengths on several parameters that describe the structure of the disc. We also compared model line profiles, fluxes, and EWs with observational data for two Be stars (MX Pup and π Aqr). Even though the synthetic spectra adequately fit our observations of both stars and allow us to constrain the parameters of the disc, there is a discrepancy with the observed data in the EW and flux measurements, especially in the case of MX Pup. It is possible that by including Brackett lines of higher terms or adding the analysis of other series, we may be able to better constrain the parameters of the observed disc.
Fil: Cochetti, Yanina Roxana. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Granada, Anahi. Universidad Nacional de Rio Negro. Sede Andina. Laboratorio de Procesamiento de Señales Aplicadas y Computacion de Alto Rendimiento.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Arias, María Laura. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Torres, Andrea Fabiana. Universidad Nacional de la Plata. Facultad de Cs.astronómicas y Geofísicas. Departamento de Espectrocopia Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Arcos, Catalina. Universidad de Valparaíso; Chile
description The IR spectra of Be stars display numerous hydrogen recombination lines, constituting a great resource for obtaining information on the physical and dynamic structures of different regions within the circumstellar envelope. Nevertheless, this spectral region has not been analysed in depth, and there is a lack of synthetic spectra with which to compare observations. Therefore, we computed synthetic spectra with the HDUST code for different disc parameters. Here, we present our results on the spectral region that includes lines of the Brackett series. We discuss the dependence of the line series strengths on several parameters that describe the structure of the disc. We also compared model line profiles, fluxes, and EWs with observational data for two Be stars (MX Pup and π Aqr). Even though the synthetic spectra adequately fit our observations of both stars and allow us to constrain the parameters of the disc, there is a discrepancy with the observed data in the EW and flux measurements, especially in the case of MX Pup. It is possible that by including Brackett lines of higher terms or adding the analysis of other series, we may be able to better constrain the parameters of the observed disc.
publishDate 2023
dc.date.none.fl_str_mv 2023-08
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/11336/236247
Cochetti, Yanina Roxana; Granada, Anahi; Arias, María Laura; Torres, Andrea Fabiana; Arcos, Catalina; Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour; MDPI; Galaxies; 11; 4; 8-2023; 1-17
2075-4434
CONICET Digital
CONICET
url http://hdl.handle.net/11336/236247
identifier_str_mv Cochetti, Yanina Roxana; Granada, Anahi; Arias, María Laura; Torres, Andrea Fabiana; Arcos, Catalina; Infrared spectroscopy of Be stars: influence of the envelope parameters on Brackett-Series behaviour; MDPI; Galaxies; 11; 4; 8-2023; 1-17
2075-4434
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-4434/11/4/90
info:eu-repo/semantics/altIdentifier/doi/10.3390/galaxies11040090
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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 13.070432

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