The sudden appearance of CO emission in LHA 115-S 65

Autores
Oksala, Mary E.; Kraus, M.; Arias, María Laura; Borges Fernandes, M.; Cidale, Lydia Sonia; Muratore, Maria Florencia; Curé, M.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Molecular emission has been detected in several Magellanic Cloud B[e] supergiants. In this Letter, we report on the detection of CO band head emission in the B[e] supergiant LHA 115-S 65, and present a K-band near-infrared spectrum obtained with the Spectrograph for INtegral Field Observation in the Near-Infrared (SINFONI; R=4500) on the ESO VLT UT4 telescope. The observed molecular band head emission in S 65 is quite surprising in light of a previous non-detection by McGregor et al. (1989), as well as a high resolution (R=50000) Gemini/Phoenix spectrum of this star taken nine months earlier showing no emission. Based on analysis of the optical spectrum by Kraus et al. (2010), we suspect that the sudden appearance of molecular emission could be due to density build up in an outflowing viscous disk, as seen for Be stars. This new discovery, combined with variability in two other similar evolved massive stars, indicates an evolutionary link between B[e] supergiants and LBVs.
Fil: Oksala, Mary E.. Academia de Ciencias de la Republica Checa (academia de Ciencias Checa); República Checa
Fil: Kraus, M.. Academia de Ciencias de la Republica Checa (academia de Ciencias Checa); República Checa
Fil: Arias, María Laura. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; Argentina
Fil: Borges Fernandes, M.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Cidale, Lydia Sonia. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; Argentina
Fil: Muratore, Maria Florencia. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; Argentina
Fil: Curé, M.. Universidad de Valparaíso; Chile
Materia
CIRCUMSTELLAR MATTER
STARS: EMISSION-LINE, BE
STARS: INDIVIDUAL: LHA 115-S 65
SUPERGIANTS
STARS: WINDS, OUTFLOWS
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:11336/275041
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The sudden appearance of CO emission in LHA 115-S 65Oksala, Mary E.Kraus, M.Arias, María LauraBorges Fernandes, M.Cidale, Lydia SoniaMuratore, Maria FlorenciaCuré, M.CIRCUMSTELLAR MATTERSTARS: EMISSION-LINE, BESTARS: INDIVIDUAL: LHA 115-S 65SUPERGIANTSSTARS: WINDS, OUTFLOWShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Molecular emission has been detected in several Magellanic Cloud B[e] supergiants. In this Letter, we report on the detection of CO band head emission in the B[e] supergiant LHA 115-S 65, and present a K-band near-infrared spectrum obtained with the Spectrograph for INtegral Field Observation in the Near-Infrared (SINFONI; R=4500) on the ESO VLT UT4 telescope. The observed molecular band head emission in S 65 is quite surprising in light of a previous non-detection by McGregor et al. (1989), as well as a high resolution (R=50000) Gemini/Phoenix spectrum of this star taken nine months earlier showing no emission. Based on analysis of the optical spectrum by Kraus et al. (2010), we suspect that the sudden appearance of molecular emission could be due to density build up in an outflowing viscous disk, as seen for Be stars. This new discovery, combined with variability in two other similar evolved massive stars, indicates an evolutionary link between B[e] supergiants and LBVs.Fil: Oksala, Mary E.. Academia de Ciencias de la Republica Checa (academia de Ciencias Checa); República ChecaFil: Kraus, M.. Academia de Ciencias de la Republica Checa (academia de Ciencias Checa); República ChecaFil: Arias, María Laura. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; ArgentinaFil: Borges Fernandes, M.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Cidale, Lydia Sonia. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; ArgentinaFil: Muratore, Maria Florencia. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; ArgentinaFil: Curé, M.. Universidad de Valparaíso; ChileWiley Blackwell Publishing, Inc2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/275041Oksala, Mary E.; Kraus, M.; Arias, María Laura; Borges Fernandes, M.; Cidale, Lydia Sonia; et al.; The sudden appearance of CO emission in LHA 115-S 65; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 426; 1; 10-2012; 56-600035-87111745-3933CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article/426/1/L56/988574info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1745-3933.2012.01323.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-03T08:39:54Zoai:ri.conicet.gov.ar:11336/275041instacron: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:34982025-12-03 08:39:54.802CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The sudden appearance of CO emission in LHA 115-S 65
title The sudden appearance of CO emission in LHA 115-S 65
spellingShingle The sudden appearance of CO emission in LHA 115-S 65
Oksala, Mary E.
CIRCUMSTELLAR MATTER
STARS: EMISSION-LINE, BE
STARS: INDIVIDUAL: LHA 115-S 65
SUPERGIANTS
STARS: WINDS, OUTFLOWS
title_short The sudden appearance of CO emission in LHA 115-S 65
title_full The sudden appearance of CO emission in LHA 115-S 65
title_fullStr The sudden appearance of CO emission in LHA 115-S 65
title_full_unstemmed The sudden appearance of CO emission in LHA 115-S 65
title_sort The sudden appearance of CO emission in LHA 115-S 65
dc.creator.none.fl_str_mv Oksala, Mary E.
Kraus, M.
Arias, María Laura
Borges Fernandes, M.
Cidale, Lydia Sonia
Muratore, Maria Florencia
Curé, M.
author Oksala, Mary E.
author_facet Oksala, Mary E.
Kraus, M.
Arias, María Laura
Borges Fernandes, M.
Cidale, Lydia Sonia
Muratore, Maria Florencia
Curé, M.
author_role author
author2 Kraus, M.
Arias, María Laura
Borges Fernandes, M.
Cidale, Lydia Sonia
Muratore, Maria Florencia
Curé, M.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv CIRCUMSTELLAR MATTER
STARS: EMISSION-LINE, BE
STARS: INDIVIDUAL: LHA 115-S 65
SUPERGIANTS
STARS: WINDS, OUTFLOWS
topic CIRCUMSTELLAR MATTER
STARS: EMISSION-LINE, BE
STARS: INDIVIDUAL: LHA 115-S 65
SUPERGIANTS
STARS: WINDS, OUTFLOWS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Molecular emission has been detected in several Magellanic Cloud B[e] supergiants. In this Letter, we report on the detection of CO band head emission in the B[e] supergiant LHA 115-S 65, and present a K-band near-infrared spectrum obtained with the Spectrograph for INtegral Field Observation in the Near-Infrared (SINFONI; R=4500) on the ESO VLT UT4 telescope. The observed molecular band head emission in S 65 is quite surprising in light of a previous non-detection by McGregor et al. (1989), as well as a high resolution (R=50000) Gemini/Phoenix spectrum of this star taken nine months earlier showing no emission. Based on analysis of the optical spectrum by Kraus et al. (2010), we suspect that the sudden appearance of molecular emission could be due to density build up in an outflowing viscous disk, as seen for Be stars. This new discovery, combined with variability in two other similar evolved massive stars, indicates an evolutionary link between B[e] supergiants and LBVs.
Fil: Oksala, Mary E.. Academia de Ciencias de la Republica Checa (academia de Ciencias Checa); República Checa
Fil: Kraus, M.. Academia de Ciencias de la Republica Checa (academia de Ciencias Checa); República Checa
Fil: Arias, María Laura. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; Argentina
Fil: Borges Fernandes, M.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Cidale, Lydia Sonia. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; Argentina
Fil: Muratore, Maria Florencia. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Dinámica Estelar; Argentina
Fil: Curé, M.. Universidad de Valparaíso; Chile
description Molecular emission has been detected in several Magellanic Cloud B[e] supergiants. In this Letter, we report on the detection of CO band head emission in the B[e] supergiant LHA 115-S 65, and present a K-band near-infrared spectrum obtained with the Spectrograph for INtegral Field Observation in the Near-Infrared (SINFONI; R=4500) on the ESO VLT UT4 telescope. The observed molecular band head emission in S 65 is quite surprising in light of a previous non-detection by McGregor et al. (1989), as well as a high resolution (R=50000) Gemini/Phoenix spectrum of this star taken nine months earlier showing no emission. Based on analysis of the optical spectrum by Kraus et al. (2010), we suspect that the sudden appearance of molecular emission could be due to density build up in an outflowing viscous disk, as seen for Be stars. This new discovery, combined with variability in two other similar evolved massive stars, indicates an evolutionary link between B[e] supergiants and LBVs.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
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/11336/275041
Oksala, Mary E.; Kraus, M.; Arias, María Laura; Borges Fernandes, M.; Cidale, Lydia Sonia; et al.; The sudden appearance of CO emission in LHA 115-S 65; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 426; 1; 10-2012; 56-60
0035-8711
1745-3933
CONICET Digital
CONICET
url http://hdl.handle.net/11336/275041
identifier_str_mv Oksala, Mary E.; Kraus, M.; Arias, María Laura; Borges Fernandes, M.; Cidale, Lydia Sonia; et al.; The sudden appearance of CO emission in LHA 115-S 65; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 426; 1; 10-2012; 56-60
0035-8711
1745-3933
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://academic.oup.com/mnrasl/article/426/1/L56/988574
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1745-3933.2012.01323.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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 13.227901

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