Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18
- Autores
- Torres, Andrea Fabiana; Kraus, M.; Cidale, Lydia Sonia; Barba, Rodolfo Hector; Borges Fernandes, M.; Brandi, E.
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- LHA 115-S 18 is a very peculiar emission-line star exhibiting the B[e] phenomenon. Located in the Small Magellanic Cloud, its spectrum shows features of an extremely wide range of excitation and ionization stages, extending from highly ionized atomic lines (Si IV, CIV, HeII) in the ultraviolet and optical regions to molecular emission bands of CO and TiO in the optical and infrared regions. The most distinguishing spectral characteristic of LHA 115-S 18 is the high variability detected in the He II λ4686 emission line, which can be a very conspicuous or completely invisible feature. In thiswork,we report on another peculiarity ofLHA115-S 18. From high-resolution optical spectra taken between 2000 and 2008, we discovered the appearance and strengthening of two emission features at λλ6825 and 7082Å, which we have identified as Raman-scattered lines. This is the first time that these lines have been detected in the spectrum of a massive luminous B[e] star. As the classification of LHA 115-S 18 is highly controversial, we discuss how the discovery of the appearance of Raman-scattered lines in this peculiar star might help us to solve this puzzle.
Fil: Torres, Andrea Fabiana. 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: Kraus, M.. Akademie věd České Republiky; República Checa
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
Fil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Borges Fernandes, M.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Brandi, E.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina - Materia
-
CIRCUMSTELLAR MATTER
STARS: INDIVIDUAL: LHA 115-S 18
STARS: MASSIVE
STARS: PECULIAR
SUPERGIANTS - 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:11336/82539
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/82539 |
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CONICET Digital (CONICET) |
spelling |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18Torres, Andrea FabianaKraus, M.Cidale, Lydia SoniaBarba, Rodolfo HectorBorges Fernandes, M.Brandi, E.CIRCUMSTELLAR MATTERSTARS: INDIVIDUAL: LHA 115-S 18STARS: MASSIVESTARS: PECULIARSUPERGIANTShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1LHA 115-S 18 is a very peculiar emission-line star exhibiting the B[e] phenomenon. Located in the Small Magellanic Cloud, its spectrum shows features of an extremely wide range of excitation and ionization stages, extending from highly ionized atomic lines (Si IV, CIV, HeII) in the ultraviolet and optical regions to molecular emission bands of CO and TiO in the optical and infrared regions. The most distinguishing spectral characteristic of LHA 115-S 18 is the high variability detected in the He II λ4686 emission line, which can be a very conspicuous or completely invisible feature. In thiswork,we report on another peculiarity ofLHA115-S 18. From high-resolution optical spectra taken between 2000 and 2008, we discovered the appearance and strengthening of two emission features at λλ6825 and 7082Å, which we have identified as Raman-scattered lines. This is the first time that these lines have been detected in the spectrum of a massive luminous B[e] star. As the classification of LHA 115-S 18 is highly controversial, we discuss how the discovery of the appearance of Raman-scattered lines in this peculiar star might help us to solve this puzzle.Fil: Torres, Andrea Fabiana. 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: Kraus, M.. Akademie věd České Republiky; República ChecaFil: 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; ArgentinaFil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Borges Fernandes, M.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Brandi, E.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaWiley Blackwell Publishing, Inc2012-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/82539Torres, Andrea Fabiana; Kraus, M.; Cidale, Lydia Sonia; Barba, Rodolfo Hector; Borges Fernandes, M.; et al.; Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 427; 1; 11-2012; 80-840035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1745-3933.2012.01349.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article/427/1/L80/1003671info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:05:44Zoai:ri.conicet.gov.ar:11336/82539instacron: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 10:05:44.548CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
title |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
spellingShingle |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 Torres, Andrea Fabiana CIRCUMSTELLAR MATTER STARS: INDIVIDUAL: LHA 115-S 18 STARS: MASSIVE STARS: PECULIAR SUPERGIANTS |
title_short |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
title_full |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
title_fullStr |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
title_full_unstemmed |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
title_sort |
Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18 |
dc.creator.none.fl_str_mv |
Torres, Andrea Fabiana Kraus, M. Cidale, Lydia Sonia Barba, Rodolfo Hector Borges Fernandes, M. Brandi, E. |
author |
Torres, Andrea Fabiana |
author_facet |
Torres, Andrea Fabiana Kraus, M. Cidale, Lydia Sonia Barba, Rodolfo Hector Borges Fernandes, M. Brandi, E. |
author_role |
author |
author2 |
Kraus, M. Cidale, Lydia Sonia Barba, Rodolfo Hector Borges Fernandes, M. Brandi, E. |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
CIRCUMSTELLAR MATTER STARS: INDIVIDUAL: LHA 115-S 18 STARS: MASSIVE STARS: PECULIAR SUPERGIANTS |
topic |
CIRCUMSTELLAR MATTER STARS: INDIVIDUAL: LHA 115-S 18 STARS: MASSIVE STARS: PECULIAR SUPERGIANTS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
LHA 115-S 18 is a very peculiar emission-line star exhibiting the B[e] phenomenon. Located in the Small Magellanic Cloud, its spectrum shows features of an extremely wide range of excitation and ionization stages, extending from highly ionized atomic lines (Si IV, CIV, HeII) in the ultraviolet and optical regions to molecular emission bands of CO and TiO in the optical and infrared regions. The most distinguishing spectral characteristic of LHA 115-S 18 is the high variability detected in the He II λ4686 emission line, which can be a very conspicuous or completely invisible feature. In thiswork,we report on another peculiarity ofLHA115-S 18. From high-resolution optical spectra taken between 2000 and 2008, we discovered the appearance and strengthening of two emission features at λλ6825 and 7082Å, which we have identified as Raman-scattered lines. This is the first time that these lines have been detected in the spectrum of a massive luminous B[e] star. As the classification of LHA 115-S 18 is highly controversial, we discuss how the discovery of the appearance of Raman-scattered lines in this peculiar star might help us to solve this puzzle. Fil: Torres, Andrea Fabiana. 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: Kraus, M.. Akademie věd České Republiky; República Checa 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 Fil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina Fil: Borges Fernandes, M.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Brandi, E.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina |
description |
LHA 115-S 18 is a very peculiar emission-line star exhibiting the B[e] phenomenon. Located in the Small Magellanic Cloud, its spectrum shows features of an extremely wide range of excitation and ionization stages, extending from highly ionized atomic lines (Si IV, CIV, HeII) in the ultraviolet and optical regions to molecular emission bands of CO and TiO in the optical and infrared regions. The most distinguishing spectral characteristic of LHA 115-S 18 is the high variability detected in the He II λ4686 emission line, which can be a very conspicuous or completely invisible feature. In thiswork,we report on another peculiarity ofLHA115-S 18. From high-resolution optical spectra taken between 2000 and 2008, we discovered the appearance and strengthening of two emission features at λλ6825 and 7082Å, which we have identified as Raman-scattered lines. This is the first time that these lines have been detected in the spectrum of a massive luminous B[e] star. As the classification of LHA 115-S 18 is highly controversial, we discuss how the discovery of the appearance of Raman-scattered lines in this peculiar star might help us to solve this puzzle. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-11 |
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/11336/82539 Torres, Andrea Fabiana; Kraus, M.; Cidale, Lydia Sonia; Barba, Rodolfo Hector; Borges Fernandes, M.; et al.; Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 427; 1; 11-2012; 80-84 0035-8711 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/82539 |
identifier_str_mv |
Torres, Andrea Fabiana; Kraus, M.; Cidale, Lydia Sonia; Barba, Rodolfo Hector; Borges Fernandes, M.; et al.; Discovery of Raman-scattered lines in the massive luminous emission-line: Star LHA 115-S 18; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 427; 1; 11-2012; 80-84 0035-8711 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1745-3933.2012.01349.x info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article/427/1/L80/1003671 |
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 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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1844613897150005248 |
score |
13.070432 |