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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/10854
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oai:ri.conicet.gov.ar:11336/10854 |
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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 Técnicas2025-09-29T10:09:56Zoai: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:34982025-09-29 10:09:57.222CONICET 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 |
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13.070432 |