A K-band spectral mini-survey of Galactic B[e] stars

Autores
Liermann, A.; Schnurr, O.; Kraus, M.; Kreplin, A.; Arias, María Laura; Cidale, Lydia Sonia
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a mini-survey of Galactic B[e] stars mainly undertaken with the Large Binocular Telescope (LBT). B[e] stars show morphological features with hydrogen emission lines and an infrared excess, attributed to warm circumstellar dust. In general, these features are assumed to arise from dense, non-spherical, disk-forming circumstellar material in which molecules and dust can condensate. Due to the lack of reliable luminosities, the class of Galactic B[e] stars contains stars at very different stellar evolutionary phases like Herbig AeBe, supergiants or planetary nebulae. We took near-infrared long-slit K-band spectra for a sample of Galactic B[e] stars with the LBT-Luci I. Prominent spectral features, such as the Brackett γ line and CO band heads are identified in the spectra. The analysis shows that the stars can be characterized as evolved objects. Among others we find one LBV candidate (MWC 314), one supergiant B[e] candidate with 13CO (MWC 137) and in two cases (MWC 623 and AS 381) indications for the existence of a late-type binary companion, complementary to previous studies. For MWC 84, IR spectra were taken at different epochs with LBT-Luci I and the GNIRS spectrograph at the Gemini North telescope. The new data show the disappearance of the circumstellar CO emission around this star, previously detectable over decades. Also no signs of a recent prominent eruption leading to the formation of new CO disk emission are found during 2010 and 2013.
Fil: Liermann, A.. Max-Planck-Institut für Radioastronomie; Alemania. Astrophysikalisches Institut Potsdam; Alemania
Fil: Schnurr, O.. Astrophysikalisches Institut Potsdam; Alemania
Fil: Kraus, M.. Akademie ved Ceské republik; República Checa
Fil: Kreplin, A.. Max-Planck-Institut für Radioastronomie; Alemania
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 La Plata. Instituto de Astrofísica de La Plata; Argentina
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 La Plata. Instituto de Astrofísica de La Plata; Argentina
Materia
Circumstellar matter
Emission line
Be-supergiants
Star winds
Infrared stars
Star 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:11336/10854
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10854
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A K-band spectral mini-survey of Galactic B[e] starsLiermann, A.Schnurr, O.Kraus, M.Kreplin, A.Arias, María LauraCidale, Lydia SoniaCircumstellar matterEmission lineBe-supergiantsStar windsInfrared starsStar outflowshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a mini-survey of Galactic B[e] stars mainly undertaken with the Large Binocular Telescope (LBT). B[e] stars show morphological features with hydrogen emission lines and an infrared excess, attributed to warm circumstellar dust. In general, these features are assumed to arise from dense, non-spherical, disk-forming circumstellar material in which molecules and dust can condensate. Due to the lack of reliable luminosities, the class of Galactic B[e] stars contains stars at very different stellar evolutionary phases like Herbig AeBe, supergiants or planetary nebulae. We took near-infrared long-slit K-band spectra for a sample of Galactic B[e] stars with the LBT-Luci I. Prominent spectral features, such as the Brackett γ line and CO band heads are identified in the spectra. The analysis shows that the stars can be characterized as evolved objects. Among others we find one LBV candidate (MWC 314), one supergiant B[e] candidate with 13CO (MWC 137) and in two cases (MWC 623 and AS 381) indications for the existence of a late-type binary companion, complementary to previous studies. For MWC 84, IR spectra were taken at different epochs with LBT-Luci I and the GNIRS spectrograph at the Gemini North telescope. The new data show the disappearance of the circumstellar CO emission around this star, previously detectable over decades. Also no signs of a recent prominent eruption leading to the formation of new CO disk emission are found during 2010 and 2013.Fil: Liermann, A.. Max-Planck-Institut für Radioastronomie; Alemania. Astrophysikalisches Institut Potsdam; AlemaniaFil: Schnurr, O.. Astrophysikalisches Institut Potsdam; AlemaniaFil: Kraus, M.. Akademie ved Ceské republik; República ChecaFil: Kreplin, A.. Max-Planck-Institut für Radioastronomie; AlemaniaFil: 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 La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: 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 La Plata. Instituto de Astrofísica de La Plata; ArgentinaOxford University Press2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10854Liermann, A.; Schnurr, O.; Kraus, M.; Kreplin, A.; Arias, María Laura; et al.; A K-band spectral mini-survey of Galactic B[e] stars; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 443; 2; 9-2014; 947-9560035-87111365-2966enginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1174info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/443/2/947info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1407.3900info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:39:53Zoai:ri.conicet.gov.ar:11336/10854instacron: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:34982025-10-22 11:39:53.555CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A K-band spectral mini-survey of Galactic B[e] stars
title A K-band spectral mini-survey of Galactic B[e] stars
spellingShingle A K-band spectral mini-survey of Galactic B[e] stars
Liermann, A.
Circumstellar matter
Emission line
Be-supergiants
Star winds
Infrared stars
Star outflows
title_short A K-band spectral mini-survey of Galactic B[e] stars
title_full A K-band spectral mini-survey of Galactic B[e] stars
title_fullStr A K-band spectral mini-survey of Galactic B[e] stars
title_full_unstemmed A K-band spectral mini-survey of Galactic B[e] stars
title_sort A K-band spectral mini-survey of Galactic B[e] stars
dc.creator.none.fl_str_mv Liermann, A.
Schnurr, O.
Kraus, M.
Kreplin, A.
Arias, María Laura
Cidale, Lydia Sonia
author Liermann, A.
author_facet Liermann, A.
Schnurr, O.
Kraus, M.
Kreplin, A.
Arias, María Laura
Cidale, Lydia Sonia
author_role author
author2 Schnurr, O.
Kraus, M.
Kreplin, A.
Arias, María Laura
Cidale, Lydia Sonia
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Circumstellar matter
Emission line
Be-supergiants
Star winds
Infrared stars
Star outflows
topic Circumstellar matter
Emission line
Be-supergiants
Star winds
Infrared stars
Star 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 We present a mini-survey of Galactic B[e] stars mainly undertaken with the Large Binocular Telescope (LBT). B[e] stars show morphological features with hydrogen emission lines and an infrared excess, attributed to warm circumstellar dust. In general, these features are assumed to arise from dense, non-spherical, disk-forming circumstellar material in which molecules and dust can condensate. Due to the lack of reliable luminosities, the class of Galactic B[e] stars contains stars at very different stellar evolutionary phases like Herbig AeBe, supergiants or planetary nebulae. We took near-infrared long-slit K-band spectra for a sample of Galactic B[e] stars with the LBT-Luci I. Prominent spectral features, such as the Brackett γ line and CO band heads are identified in the spectra. The analysis shows that the stars can be characterized as evolved objects. Among others we find one LBV candidate (MWC 314), one supergiant B[e] candidate with 13CO (MWC 137) and in two cases (MWC 623 and AS 381) indications for the existence of a late-type binary companion, complementary to previous studies. For MWC 84, IR spectra were taken at different epochs with LBT-Luci I and the GNIRS spectrograph at the Gemini North telescope. The new data show the disappearance of the circumstellar CO emission around this star, previously detectable over decades. Also no signs of a recent prominent eruption leading to the formation of new CO disk emission are found during 2010 and 2013.
Fil: Liermann, A.. Max-Planck-Institut für Radioastronomie; Alemania. Astrophysikalisches Institut Potsdam; Alemania
Fil: Schnurr, O.. Astrophysikalisches Institut Potsdam; Alemania
Fil: Kraus, M.. Akademie ved Ceské republik; República Checa
Fil: Kreplin, A.. Max-Planck-Institut für Radioastronomie; Alemania
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 La Plata. Instituto de Astrofísica de La Plata; Argentina
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 La Plata. Instituto de Astrofísica de La Plata; Argentina
description We present a mini-survey of Galactic B[e] stars mainly undertaken with the Large Binocular Telescope (LBT). B[e] stars show morphological features with hydrogen emission lines and an infrared excess, attributed to warm circumstellar dust. In general, these features are assumed to arise from dense, non-spherical, disk-forming circumstellar material in which molecules and dust can condensate. Due to the lack of reliable luminosities, the class of Galactic B[e] stars contains stars at very different stellar evolutionary phases like Herbig AeBe, supergiants or planetary nebulae. We took near-infrared long-slit K-band spectra for a sample of Galactic B[e] stars with the LBT-Luci I. Prominent spectral features, such as the Brackett γ line and CO band heads are identified in the spectra. The analysis shows that the stars can be characterized as evolved objects. Among others we find one LBV candidate (MWC 314), one supergiant B[e] candidate with 13CO (MWC 137) and in two cases (MWC 623 and AS 381) indications for the existence of a late-type binary companion, complementary to previous studies. For MWC 84, IR spectra were taken at different epochs with LBT-Luci I and the GNIRS spectrograph at the Gemini North telescope. The new data show the disappearance of the circumstellar CO emission around this star, previously detectable over decades. Also no signs of a recent prominent eruption leading to the formation of new CO disk emission are found during 2010 and 2013.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
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/11336/10854
Liermann, A.; Schnurr, O.; Kraus, M.; Kreplin, A.; Arias, María Laura; et al.; A K-band spectral mini-survey of Galactic B[e] stars; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 443; 2; 9-2014; 947-956
0035-8711
1365-2966
url http://hdl.handle.net/11336/10854
identifier_str_mv Liermann, A.; Schnurr, O.; Kraus, M.; Kreplin, A.; Arias, María Laura; et al.; A K-band spectral mini-survey of Galactic B[e] stars; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 443; 2; 9-2014; 947-956
0035-8711
1365-2966
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1174
info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/443/2/947
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1407.3900
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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
_version_ 1846782066201460736
score 12.982451

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