BCD spectrophotometry for massive stars in transition phases

Autores
Aidelman, Yael Judith; Borges Fernandes, M.; Cidale, Lydia Sonia; Smith Castelli, Analia Viviana; Arias, María Laura; Zorec, J.; Kraus, M.; Torres, Andrea Fabiana; Souza, T. B.; Cochetti, Yanina Roxana
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. Stars in transition phases, such as those showing the B[e] phenomenon and luminous blue variables (LBVs), undergo strong, often irregular mass ejection events. The prediction of these phases in stellar evolution models is therefore extremely difficult if not impossible. As a result, their effective temperatures, their luminosities and even their true nature are not fully known.Aims. A suitable procedure to derive the stellar parameters of these types of objects is to use the BCD spectrophotometric classification system, based on the analysis of the Balmer discontinuity. The BCD parameters (lambda_1 , D) have the advantage that they are independent of interstellar extinction and circumstellar contributions.Methods. We obtained low-resolution spectra for a sample of 14 stars with the B[e] phenomenon and LBVs. Using the BCD classification system, we derived the stellar and physical parameters. The study was complemented with information provided by the JHK colour-colour diagram.Results. For each star under investigation, the BCD system gives a complete set of fundamental parameters and related quantitiessuch as luminosity and distance. Among the 14 studied stars, we confirmed the classification of HK Ori, HD 323771 and HD 52721as pre-main sequence Herbig Ae/B[e] stars, AS 202 and HD 85567 as FS CMa-type stars, and HD 62623 as sgB[e]. We classified Hen 3-847, CD-24 5721, and HD 53367 as young B[e] stars or FS CMa-type candidates, and HD 58647 as a slightly evolved B[e] star.In addition, Hen 3-1398 is an sgB[e] and MWC 877, CPD-59 2854 and LHA 120-S 65 are LBV candidates. The stellar parameters of the latter two LBVs are determined for the first time. We also used the size-luminosity relation to estimate the inner radius of the dust disk around the pre-main and main sequence B[e] stars.Conclusions. Our results emphasise that the BCD system is an important and highly valuable tool to derive stellar parameters and physical properties of B-type stars in transition phases. This method can be combined with near-IR colour-colour diagrams to determine or confirm the evolutionary stage of emission-line stars with dust disks.
Fil: Aidelman, Yael Judith. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Borges Fernandes, M.. Observatorio Nacional de Rio de Janeiro; Brasil
Fil: Cidale, Lydia Sonia. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Smith Castelli, Analia Viviana. 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: Arias, María Laura. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Zorec, J.. Institut D'astrophysique de Paris; Francia
Fil: Kraus, M.. Astronomický Ústav; República Checa
Fil: Torres, Andrea Fabiana. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Souza, T. B.. Observatorio Nacional de Rio de Janeiro; Brasil
Fil: Cochetti, Yanina Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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
Materia
stars: early-type
stars: fundamental parameters
stars: mass-loss
stars: winds, outflows
(stars:) circumstellar matter
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/232860
Acceder
id CONICETDig_97a71c3890c5b54b3465443b461c0dee
oai_identifier_str oai:ri.conicet.gov.ar:11336/232860
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling BCD spectrophotometry for massive stars in transition phasesAidelman, Yael JudithBorges Fernandes, M.Cidale, Lydia SoniaSmith Castelli, Analia VivianaArias, María LauraZorec, J.Kraus, M.Torres, Andrea FabianaSouza, T. B.Cochetti, Yanina Roxanastars: early-typestars: fundamental parametersstars: mass-lossstars: winds, outflows(stars:) circumstellar matterhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. Stars in transition phases, such as those showing the B[e] phenomenon and luminous blue variables (LBVs), undergo strong, often irregular mass ejection events. The prediction of these phases in stellar evolution models is therefore extremely difficult if not impossible. As a result, their effective temperatures, their luminosities and even their true nature are not fully known.Aims. A suitable procedure to derive the stellar parameters of these types of objects is to use the BCD spectrophotometric classification system, based on the analysis of the Balmer discontinuity. The BCD parameters (lambda_1 , D) have the advantage that they are independent of interstellar extinction and circumstellar contributions.Methods. We obtained low-resolution spectra for a sample of 14 stars with the B[e] phenomenon and LBVs. Using the BCD classification system, we derived the stellar and physical parameters. The study was complemented with information provided by the JHK colour-colour diagram.Results. For each star under investigation, the BCD system gives a complete set of fundamental parameters and related quantitiessuch as luminosity and distance. Among the 14 studied stars, we confirmed the classification of HK Ori, HD 323771 and HD 52721as pre-main sequence Herbig Ae/B[e] stars, AS 202 and HD 85567 as FS CMa-type stars, and HD 62623 as sgB[e]. We classified Hen 3-847, CD-24 5721, and HD 53367 as young B[e] stars or FS CMa-type candidates, and HD 58647 as a slightly evolved B[e] star.In addition, Hen 3-1398 is an sgB[e] and MWC 877, CPD-59 2854 and LHA 120-S 65 are LBV candidates. The stellar parameters of the latter two LBVs are determined for the first time. We also used the size-luminosity relation to estimate the inner radius of the dust disk around the pre-main and main sequence B[e] stars.Conclusions. Our results emphasise that the BCD system is an important and highly valuable tool to derive stellar parameters and physical properties of B-type stars in transition phases. This method can be combined with near-IR colour-colour diagrams to determine or confirm the evolutionary stage of emission-line stars with dust disks.Fil: Aidelman, Yael Judith. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Borges Fernandes, M.. Observatorio Nacional de Rio de Janeiro; BrasilFil: Cidale, Lydia Sonia. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Smith Castelli, Analia Viviana. 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: Arias, María Laura. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Zorec, J.. Institut D'astrophysique de Paris; FranciaFil: Kraus, M.. Astronomický Ústav; República ChecaFil: Torres, Andrea Fabiana. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Souza, T. B.. Observatorio Nacional de Rio de Janeiro; BrasilFil: Cochetti, Yanina Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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; ArgentinaEDP Sciences2023-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/232860Aidelman, Yael Judith; Borges Fernandes, M.; Cidale, Lydia Sonia; Smith Castelli, Analia Viviana; Arias, María Laura; et al.; BCD spectrophotometry for massive stars in transition phases; EDP Sciences; Astronomy and Astrophysics; 678; A21; 7-2023; 1-220004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/10.1051/0004-6361/202244938info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202244938info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:14Zoai:ri.conicet.gov.ar:11336/232860instacron: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 10:21:14.939CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv BCD spectrophotometry for massive stars in transition phases
title BCD spectrophotometry for massive stars in transition phases
spellingShingle BCD spectrophotometry for massive stars in transition phases
Aidelman, Yael Judith
stars: early-type
stars: fundamental parameters
stars: mass-loss
stars: winds, outflows
(stars:) circumstellar matter
title_short BCD spectrophotometry for massive stars in transition phases
title_full BCD spectrophotometry for massive stars in transition phases
title_fullStr BCD spectrophotometry for massive stars in transition phases
title_full_unstemmed BCD spectrophotometry for massive stars in transition phases
title_sort BCD spectrophotometry for massive stars in transition phases
dc.creator.none.fl_str_mv Aidelman, Yael Judith
Borges Fernandes, M.
Cidale, Lydia Sonia
Smith Castelli, Analia Viviana
Arias, María Laura
Zorec, J.
Kraus, M.
Torres, Andrea Fabiana
Souza, T. B.
Cochetti, Yanina Roxana
author Aidelman, Yael Judith
author_facet Aidelman, Yael Judith
Borges Fernandes, M.
Cidale, Lydia Sonia
Smith Castelli, Analia Viviana
Arias, María Laura
Zorec, J.
Kraus, M.
Torres, Andrea Fabiana
Souza, T. B.
Cochetti, Yanina Roxana
author_role author
author2 Borges Fernandes, M.
Cidale, Lydia Sonia
Smith Castelli, Analia Viviana
Arias, María Laura
Zorec, J.
Kraus, M.
Torres, Andrea Fabiana
Souza, T. B.
Cochetti, Yanina Roxana
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv stars: early-type
stars: fundamental parameters
stars: mass-loss
stars: winds, outflows
(stars:) circumstellar matter
topic stars: early-type
stars: fundamental parameters
stars: mass-loss
stars: winds, outflows
(stars:) 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 Context. Stars in transition phases, such as those showing the B[e] phenomenon and luminous blue variables (LBVs), undergo strong, often irregular mass ejection events. The prediction of these phases in stellar evolution models is therefore extremely difficult if not impossible. As a result, their effective temperatures, their luminosities and even their true nature are not fully known.Aims. A suitable procedure to derive the stellar parameters of these types of objects is to use the BCD spectrophotometric classification system, based on the analysis of the Balmer discontinuity. The BCD parameters (lambda_1 , D) have the advantage that they are independent of interstellar extinction and circumstellar contributions.Methods. We obtained low-resolution spectra for a sample of 14 stars with the B[e] phenomenon and LBVs. Using the BCD classification system, we derived the stellar and physical parameters. The study was complemented with information provided by the JHK colour-colour diagram.Results. For each star under investigation, the BCD system gives a complete set of fundamental parameters and related quantitiessuch as luminosity and distance. Among the 14 studied stars, we confirmed the classification of HK Ori, HD 323771 and HD 52721as pre-main sequence Herbig Ae/B[e] stars, AS 202 and HD 85567 as FS CMa-type stars, and HD 62623 as sgB[e]. We classified Hen 3-847, CD-24 5721, and HD 53367 as young B[e] stars or FS CMa-type candidates, and HD 58647 as a slightly evolved B[e] star.In addition, Hen 3-1398 is an sgB[e] and MWC 877, CPD-59 2854 and LHA 120-S 65 are LBV candidates. The stellar parameters of the latter two LBVs are determined for the first time. We also used the size-luminosity relation to estimate the inner radius of the dust disk around the pre-main and main sequence B[e] stars.Conclusions. Our results emphasise that the BCD system is an important and highly valuable tool to derive stellar parameters and physical properties of B-type stars in transition phases. This method can be combined with near-IR colour-colour diagrams to determine or confirm the evolutionary stage of emission-line stars with dust disks.
Fil: Aidelman, Yael Judith. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Borges Fernandes, M.. Observatorio Nacional de Rio de Janeiro; Brasil
Fil: Cidale, Lydia Sonia. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Smith Castelli, Analia Viviana. 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: Arias, María Laura. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Zorec, J.. Institut D'astrophysique de Paris; Francia
Fil: Kraus, M.. Astronomický Ústav; República Checa
Fil: Torres, Andrea Fabiana. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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: Souza, T. B.. Observatorio Nacional de Rio de Janeiro; Brasil
Fil: Cochetti, Yanina Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; 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
description Context. Stars in transition phases, such as those showing the B[e] phenomenon and luminous blue variables (LBVs), undergo strong, often irregular mass ejection events. The prediction of these phases in stellar evolution models is therefore extremely difficult if not impossible. As a result, their effective temperatures, their luminosities and even their true nature are not fully known.Aims. A suitable procedure to derive the stellar parameters of these types of objects is to use the BCD spectrophotometric classification system, based on the analysis of the Balmer discontinuity. The BCD parameters (lambda_1 , D) have the advantage that they are independent of interstellar extinction and circumstellar contributions.Methods. We obtained low-resolution spectra for a sample of 14 stars with the B[e] phenomenon and LBVs. Using the BCD classification system, we derived the stellar and physical parameters. The study was complemented with information provided by the JHK colour-colour diagram.Results. For each star under investigation, the BCD system gives a complete set of fundamental parameters and related quantitiessuch as luminosity and distance. Among the 14 studied stars, we confirmed the classification of HK Ori, HD 323771 and HD 52721as pre-main sequence Herbig Ae/B[e] stars, AS 202 and HD 85567 as FS CMa-type stars, and HD 62623 as sgB[e]. We classified Hen 3-847, CD-24 5721, and HD 53367 as young B[e] stars or FS CMa-type candidates, and HD 58647 as a slightly evolved B[e] star.In addition, Hen 3-1398 is an sgB[e] and MWC 877, CPD-59 2854 and LHA 120-S 65 are LBV candidates. The stellar parameters of the latter two LBVs are determined for the first time. We also used the size-luminosity relation to estimate the inner radius of the dust disk around the pre-main and main sequence B[e] stars.Conclusions. Our results emphasise that the BCD system is an important and highly valuable tool to derive stellar parameters and physical properties of B-type stars in transition phases. This method can be combined with near-IR colour-colour diagrams to determine or confirm the evolutionary stage of emission-line stars with dust disks.
publishDate 2023
dc.date.none.fl_str_mv 2023-07
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/11336/232860
Aidelman, Yael Judith; Borges Fernandes, M.; Cidale, Lydia Sonia; Smith Castelli, Analia Viviana; Arias, María Laura; et al.; BCD spectrophotometry for massive stars in transition phases; EDP Sciences; Astronomy and Astrophysics; 678; A21; 7-2023; 1-22
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/232860
identifier_str_mv Aidelman, Yael Judith; Borges Fernandes, M.; Cidale, Lydia Sonia; Smith Castelli, Analia Viviana; Arias, María Laura; et al.; BCD spectrophotometry for massive stars in transition phases; EDP Sciences; Astronomy and Astrophysics; 678; A21; 7-2023; 1-22
0004-6361
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.aanda.org/10.1051/0004-6361/202244938
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202244938
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 EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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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