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dc.contributor.author
Liermann, A.
dc.contributor.author
Schnurr, O.
dc.contributor.author
Kraus, M.
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Kreplin, A.
dc.contributor.author
Arias, María Laura
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dc.contributor.author
Cidale, Lydia Sonia
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dc.date.available
2017-01-04T21:12:06Z
dc.date.issued
2014-09
dc.identifier.citation
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
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/10854
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Circumstellar Matter
dc.subject
Emission Line
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Be-Supergiants
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Star Winds
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Infrared Stars
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Star Outflows
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
A K-band spectral mini-survey of Galactic B[e] stars
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-01-02T18:36:31Z
dc.identifier.eissn
1365-2966
dc.journal.volume
443
dc.journal.number
2
dc.journal.pagination
947-956
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Liermann, A.. Max-Planck-Institut für Radioastronomie; Alemania. Astrophysikalisches Institut Potsdam; Alemania
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Fil: Schnurr, O.. Astrophysikalisches Institut Potsdam; Alemania
dc.description.fil
Fil: Kraus, M.. Akademie ved Ceské republik; República Checa
dc.description.fil
Fil: Kreplin, A.. Max-Planck-Institut für Radioastronomie; Alemania
dc.description.fil
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
dc.description.fil
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
dc.journal.title
Monthly Notices Of The Royal Astronomical Society
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stu1174
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/443/2/947
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1407.3900
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