Spectroscopic variability and magnetic fields of HgMn stars

Autores
Hubrig, S.; Gonzalez, Jorge Federico; Ilyin, I.; Korhonen, H.; Savanov, I. S.; Dall, T.; Schöller, M.; Cowley, C. R.; Briquet, M.; Arlt, R.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications not only for our understanding of the formation mechanisms of stars with Hg and Mn peculiarities themselves, but also for the general understanding of B-type star formation in binary systems. The origin of the abundance anomalies observed in late B-type stars with HgMn peculiarity is still poorly understood. The connection between HgMn peculiarity and membership in binary and multiple systems is supported by our observations during the last decade. The important result achieved in our studies of a large sample of HgMn stars is the finding that most HgMn stars exhibit spectral variability of various chemical elements, proving that the presence of an inhomogeneous distribution on the surface of these stars is a rather common characteristic and not a rare phenomenon. Further, in the studied systems, we found that all components are chemically peculiar with different abundance patterns. Generally, He and Si variable Bp stars possess large-scale organised magnetic fields that in many cases appear to occur essentially in the form of a single large dipole located close to the centre of the star. The presence of magnetic fields in the atmospheres of HgMn stars has been demonstrated in several studies. In addition to the measurements of longitudinal and quadratic magnetic fields, this work also showed evidence for a relative magnetic intensification of Fe II lines produced by different magnetic desaturations induced by different Zeeman-split components.
Fil: Hubrig, S.. Leibniz-Institut für Astrophysik Potsdam; Alemania
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; Argentina
Fil: Ilyin, I.. Leibniz-Institut für Astrophysik Potsdam; Alemania
Fil: Korhonen, H.. University of Copenhagen; Dinamarca. University of Turku; Finlandia
Fil: Savanov, I. S.. Russian Academy of Sciences; Rusia
Fil: Dall, T. . European Southern Observatory; Alemania
Fil: Schöller, M. . European Southern Observatory; Alemania
Fil: Cowley, C. R. . University Of Michigan; Estados Unidos
Fil: Briquet, M. . Katholieke Universiteit Leuven; Bélgica
Fil: Arlt, R.. Leibniz-Institut für Astrophysik Potsdam; Alemania
Materia
Stars: Atmospheres
Stars: Abundances
Stars: Chemically Peculiar
Stars: Magnetic Fields
Techniques: Polarimetric
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:11336/12985
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/12985
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spectroscopic variability and magnetic fields of HgMn starsHubrig, S.Gonzalez, Jorge FedericoIlyin, I.Korhonen, H.Savanov, I. S.Dall, T. Schöller, M. Cowley, C. R. Briquet, M. Arlt, R.Stars: AtmospheresStars: AbundancesStars: Chemically PeculiarStars: Magnetic FieldsTechniques: Polarimetrichttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications not only for our understanding of the formation mechanisms of stars with Hg and Mn peculiarities themselves, but also for the general understanding of B-type star formation in binary systems. The origin of the abundance anomalies observed in late B-type stars with HgMn peculiarity is still poorly understood. The connection between HgMn peculiarity and membership in binary and multiple systems is supported by our observations during the last decade. The important result achieved in our studies of a large sample of HgMn stars is the finding that most HgMn stars exhibit spectral variability of various chemical elements, proving that the presence of an inhomogeneous distribution on the surface of these stars is a rather common characteristic and not a rare phenomenon. Further, in the studied systems, we found that all components are chemically peculiar with different abundance patterns. Generally, He and Si variable Bp stars possess large-scale organised magnetic fields that in many cases appear to occur essentially in the form of a single large dipole located close to the centre of the star. The presence of magnetic fields in the atmospheres of HgMn stars has been demonstrated in several studies. In addition to the measurements of longitudinal and quadratic magnetic fields, this work also showed evidence for a relative magnetic intensification of Fe II lines produced by different magnetic desaturations induced by different Zeeman-split components.Fil: Hubrig, S.. Leibniz-Institut für Astrophysik Potsdam; AlemaniaFil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; ArgentinaFil: Ilyin, I.. Leibniz-Institut für Astrophysik Potsdam; AlemaniaFil: Korhonen, H.. University of Copenhagen; Dinamarca. University of Turku; FinlandiaFil: Savanov, I. S.. Russian Academy of Sciences; RusiaFil: Dall, T. . European Southern Observatory; AlemaniaFil: Schöller, M. . European Southern Observatory; AlemaniaFil: Cowley, C. R. . University Of Michigan; Estados UnidosFil: Briquet, M. . Katholieke Universiteit Leuven; BélgicaFil: Arlt, R.. Leibniz-Institut für Astrophysik Potsdam; AlemaniaWiley Vch Verlag2011-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12985Hubrig, S.; Gonzalez, Jorge Federico; Ilyin, I.; Korhonen, H.; Savanov, I. S.; et al.; Spectroscopic variability and magnetic fields of HgMn stars; Wiley Vch Verlag; Astronomische Nachrichten; 332; 9-10; 12-2011; 998-10070004-6337enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/asna.201111599/abstractinfo:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1002/asna.201111599info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:22:28Zoai:ri.conicet.gov.ar:11336/12985instacron: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 10:22:28.778CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spectroscopic variability and magnetic fields of HgMn stars
title Spectroscopic variability and magnetic fields of HgMn stars
spellingShingle Spectroscopic variability and magnetic fields of HgMn stars
Hubrig, S.
Stars: Atmospheres
Stars: Abundances
Stars: Chemically Peculiar
Stars: Magnetic Fields
Techniques: Polarimetric
title_short Spectroscopic variability and magnetic fields of HgMn stars
title_full Spectroscopic variability and magnetic fields of HgMn stars
title_fullStr Spectroscopic variability and magnetic fields of HgMn stars
title_full_unstemmed Spectroscopic variability and magnetic fields of HgMn stars
title_sort Spectroscopic variability and magnetic fields of HgMn stars
dc.creator.none.fl_str_mv Hubrig, S.
Gonzalez, Jorge Federico
Ilyin, I.
Korhonen, H.
Savanov, I. S.
Dall, T.
Schöller, M.
Cowley, C. R.
Briquet, M.
Arlt, R.
author Hubrig, S.
author_facet Hubrig, S.
Gonzalez, Jorge Federico
Ilyin, I.
Korhonen, H.
Savanov, I. S.
Dall, T.
Schöller, M.
Cowley, C. R.
Briquet, M.
Arlt, R.
author_role author
author2 Gonzalez, Jorge Federico
Ilyin, I.
Korhonen, H.
Savanov, I. S.
Dall, T.
Schöller, M.
Cowley, C. R.
Briquet, M.
Arlt, R.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Stars: Atmospheres
Stars: Abundances
Stars: Chemically Peculiar
Stars: Magnetic Fields
Techniques: Polarimetric
topic Stars: Atmospheres
Stars: Abundances
Stars: Chemically Peculiar
Stars: Magnetic Fields
Techniques: Polarimetric
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications not only for our understanding of the formation mechanisms of stars with Hg and Mn peculiarities themselves, but also for the general understanding of B-type star formation in binary systems. The origin of the abundance anomalies observed in late B-type stars with HgMn peculiarity is still poorly understood. The connection between HgMn peculiarity and membership in binary and multiple systems is supported by our observations during the last decade. The important result achieved in our studies of a large sample of HgMn stars is the finding that most HgMn stars exhibit spectral variability of various chemical elements, proving that the presence of an inhomogeneous distribution on the surface of these stars is a rather common characteristic and not a rare phenomenon. Further, in the studied systems, we found that all components are chemically peculiar with different abundance patterns. Generally, He and Si variable Bp stars possess large-scale organised magnetic fields that in many cases appear to occur essentially in the form of a single large dipole located close to the centre of the star. The presence of magnetic fields in the atmospheres of HgMn stars has been demonstrated in several studies. In addition to the measurements of longitudinal and quadratic magnetic fields, this work also showed evidence for a relative magnetic intensification of Fe II lines produced by different magnetic desaturations induced by different Zeeman-split components.
Fil: Hubrig, S.. Leibniz-Institut für Astrophysik Potsdam; Alemania
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; Argentina
Fil: Ilyin, I.. Leibniz-Institut für Astrophysik Potsdam; Alemania
Fil: Korhonen, H.. University of Copenhagen; Dinamarca. University of Turku; Finlandia
Fil: Savanov, I. S.. Russian Academy of Sciences; Rusia
Fil: Dall, T. . European Southern Observatory; Alemania
Fil: Schöller, M. . European Southern Observatory; Alemania
Fil: Cowley, C. R. . University Of Michigan; Estados Unidos
Fil: Briquet, M. . Katholieke Universiteit Leuven; Bélgica
Fil: Arlt, R.. Leibniz-Institut für Astrophysik Potsdam; Alemania
description The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications not only for our understanding of the formation mechanisms of stars with Hg and Mn peculiarities themselves, but also for the general understanding of B-type star formation in binary systems. The origin of the abundance anomalies observed in late B-type stars with HgMn peculiarity is still poorly understood. The connection between HgMn peculiarity and membership in binary and multiple systems is supported by our observations during the last decade. The important result achieved in our studies of a large sample of HgMn stars is the finding that most HgMn stars exhibit spectral variability of various chemical elements, proving that the presence of an inhomogeneous distribution on the surface of these stars is a rather common characteristic and not a rare phenomenon. Further, in the studied systems, we found that all components are chemically peculiar with different abundance patterns. Generally, He and Si variable Bp stars possess large-scale organised magnetic fields that in many cases appear to occur essentially in the form of a single large dipole located close to the centre of the star. The presence of magnetic fields in the atmospheres of HgMn stars has been demonstrated in several studies. In addition to the measurements of longitudinal and quadratic magnetic fields, this work also showed evidence for a relative magnetic intensification of Fe II lines produced by different magnetic desaturations induced by different Zeeman-split components.
publishDate 2011
dc.date.none.fl_str_mv 2011-12
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/11336/12985
Hubrig, S.; Gonzalez, Jorge Federico; Ilyin, I.; Korhonen, H.; Savanov, I. S.; et al.; Spectroscopic variability and magnetic fields of HgMn stars; Wiley Vch Verlag; Astronomische Nachrichten; 332; 9-10; 12-2011; 998-1007
0004-6337
url http://hdl.handle.net/11336/12985
identifier_str_mv Hubrig, S.; Gonzalez, Jorge Federico; Ilyin, I.; Korhonen, H.; Savanov, I. S.; et al.; Spectroscopic variability and magnetic fields of HgMn stars; Wiley Vch Verlag; Astronomische Nachrichten; 332; 9-10; 12-2011; 998-1007
0004-6337
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/asna.201111599/abstract
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1002/asna.201111599
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 Wiley Vch Verlag
publisher.none.fl_str_mv Wiley Vch Verlag
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 13.070432

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