On the incidence of chemically peculiar stars in the Large Magellanic Cloud

Autores
Paunzen, E.; Pintado, Olga Ines; Maitzen, H. M.; Claret Dos Santos, Antonio
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
With the aim to corroborate the result of a search for chemically peculiar stars in the Large Magellanic Cloud (LMC), we present measurements obtained from CCD imaging of two fields, one containing a young open cluster (NGC 1711). While for the latter field, including its surrounding we obtain a contribution of 3 per cent of chemically peculiar stars detectable by Δa photometry (i.e. the magnetic objects of this group), the second field yields about half of this value in good accordance with Maitzen et al.'s finding for NGC 1866, the surrounding field of which has been found to exhibit a very low value of such stars (0.3 per cent). Thus, we are faced with the fact that our incipient impression about a substantially lower appearance of magnetic chemically peculiar stars in the LMC as compared to the Galaxy continues to be valid. Most of the photometrically identified peculiar stars (from their historical origin denominated Ap stars) are located in the domain of the B-type stars. However, this is a selection effect due to the limiting magnitude of our observing conditions impeding the observation of fainter main-sequence stars. In addition to objects showing up as positive deviators in Δa photometry, we also discuss nine stars which appear opposite the main line of normal stars, and hence are negative deviators. For most of them, the interpretation as emission stars of B-type seems to be appropriate. The statistically relevant number of observations obtained so far in the LMC supports the view that the formation of magnetic peculiar stars has occurred there at a significantly lower rate.
Fil: Paunzen, E.. Universidad de Viena; Austria
Fil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Maitzen, H. M.. Universidad de Viena; Austria
Fil: Claret Dos Santos, Antonio. Instituto de Astrofísica de Andalucía; España. Consejo Superior de Investigaciones Científicas; España
Materia
MAGELLANIC CLOUDS
STARS: CHEMICALLY PECULIAR
STARS: STATISTICS
TECHNIQUES: PHOTOMETRIC
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:11336/100280
Acceder
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network_name_str CONICET Digital (CONICET)
spelling On the incidence of chemically peculiar stars in the Large Magellanic CloudPaunzen, E.Pintado, Olga InesMaitzen, H. M.Claret Dos Santos, AntonioMAGELLANIC CLOUDSSTARS: CHEMICALLY PECULIARSTARS: STATISTICSTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1With the aim to corroborate the result of a search for chemically peculiar stars in the Large Magellanic Cloud (LMC), we present measurements obtained from CCD imaging of two fields, one containing a young open cluster (NGC 1711). While for the latter field, including its surrounding we obtain a contribution of 3 per cent of chemically peculiar stars detectable by Δa photometry (i.e. the magnetic objects of this group), the second field yields about half of this value in good accordance with Maitzen et al.'s finding for NGC 1866, the surrounding field of which has been found to exhibit a very low value of such stars (0.3 per cent). Thus, we are faced with the fact that our incipient impression about a substantially lower appearance of magnetic chemically peculiar stars in the LMC as compared to the Galaxy continues to be valid. Most of the photometrically identified peculiar stars (from their historical origin denominated Ap stars) are located in the domain of the B-type stars. However, this is a selection effect due to the limiting magnitude of our observing conditions impeding the observation of fainter main-sequence stars. In addition to objects showing up as positive deviators in Δa photometry, we also discuss nine stars which appear opposite the main line of normal stars, and hence are negative deviators. For most of them, the interpretation as emission stars of B-type seems to be appropriate. The statistically relevant number of observations obtained so far in the LMC supports the view that the formation of magnetic peculiar stars has occurred there at a significantly lower rate.Fil: Paunzen, E.. Universidad de Viena; AustriaFil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; ArgentinaFil: Maitzen, H. M.. Universidad de Viena; AustriaFil: Claret Dos Santos, Antonio. Instituto de Astrofísica de Andalucía; España. Consejo Superior de Investigaciones Científicas; EspañaOxford University Press2005-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100280Paunzen, E.; Pintado, Olga Ines; Maitzen, H. M.; Claret Dos Santos, Antonio; On the incidence of chemically peculiar stars in the Large Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 362; 3; 9-2005; 1025-10300035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2005.09371.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/362/3/1025/976364info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/astro-ph/0507564info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:26:25Zoai:ri.conicet.gov.ar:11336/100280instacron: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 11:26:26.05CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the incidence of chemically peculiar stars in the Large Magellanic Cloud
title On the incidence of chemically peculiar stars in the Large Magellanic Cloud
spellingShingle On the incidence of chemically peculiar stars in the Large Magellanic Cloud
Paunzen, E.
MAGELLANIC CLOUDS
STARS: CHEMICALLY PECULIAR
STARS: STATISTICS
TECHNIQUES: PHOTOMETRIC
title_short On the incidence of chemically peculiar stars in the Large Magellanic Cloud
title_full On the incidence of chemically peculiar stars in the Large Magellanic Cloud
title_fullStr On the incidence of chemically peculiar stars in the Large Magellanic Cloud
title_full_unstemmed On the incidence of chemically peculiar stars in the Large Magellanic Cloud
title_sort On the incidence of chemically peculiar stars in the Large Magellanic Cloud
dc.creator.none.fl_str_mv Paunzen, E.
Pintado, Olga Ines
Maitzen, H. M.
Claret Dos Santos, Antonio
author Paunzen, E.
author_facet Paunzen, E.
Pintado, Olga Ines
Maitzen, H. M.
Claret Dos Santos, Antonio
author_role author
author2 Pintado, Olga Ines
Maitzen, H. M.
Claret Dos Santos, Antonio
author2_role author
author
author
dc.subject.none.fl_str_mv MAGELLANIC CLOUDS
STARS: CHEMICALLY PECULIAR
STARS: STATISTICS
TECHNIQUES: PHOTOMETRIC
topic MAGELLANIC CLOUDS
STARS: CHEMICALLY PECULIAR
STARS: STATISTICS
TECHNIQUES: PHOTOMETRIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv With the aim to corroborate the result of a search for chemically peculiar stars in the Large Magellanic Cloud (LMC), we present measurements obtained from CCD imaging of two fields, one containing a young open cluster (NGC 1711). While for the latter field, including its surrounding we obtain a contribution of 3 per cent of chemically peculiar stars detectable by Δa photometry (i.e. the magnetic objects of this group), the second field yields about half of this value in good accordance with Maitzen et al.'s finding for NGC 1866, the surrounding field of which has been found to exhibit a very low value of such stars (0.3 per cent). Thus, we are faced with the fact that our incipient impression about a substantially lower appearance of magnetic chemically peculiar stars in the LMC as compared to the Galaxy continues to be valid. Most of the photometrically identified peculiar stars (from their historical origin denominated Ap stars) are located in the domain of the B-type stars. However, this is a selection effect due to the limiting magnitude of our observing conditions impeding the observation of fainter main-sequence stars. In addition to objects showing up as positive deviators in Δa photometry, we also discuss nine stars which appear opposite the main line of normal stars, and hence are negative deviators. For most of them, the interpretation as emission stars of B-type seems to be appropriate. The statistically relevant number of observations obtained so far in the LMC supports the view that the formation of magnetic peculiar stars has occurred there at a significantly lower rate.
Fil: Paunzen, E.. Universidad de Viena; Austria
Fil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Maitzen, H. M.. Universidad de Viena; Austria
Fil: Claret Dos Santos, Antonio. Instituto de Astrofísica de Andalucía; España. Consejo Superior de Investigaciones Científicas; España
description With the aim to corroborate the result of a search for chemically peculiar stars in the Large Magellanic Cloud (LMC), we present measurements obtained from CCD imaging of two fields, one containing a young open cluster (NGC 1711). While for the latter field, including its surrounding we obtain a contribution of 3 per cent of chemically peculiar stars detectable by Δa photometry (i.e. the magnetic objects of this group), the second field yields about half of this value in good accordance with Maitzen et al.'s finding for NGC 1866, the surrounding field of which has been found to exhibit a very low value of such stars (0.3 per cent). Thus, we are faced with the fact that our incipient impression about a substantially lower appearance of magnetic chemically peculiar stars in the LMC as compared to the Galaxy continues to be valid. Most of the photometrically identified peculiar stars (from their historical origin denominated Ap stars) are located in the domain of the B-type stars. However, this is a selection effect due to the limiting magnitude of our observing conditions impeding the observation of fainter main-sequence stars. In addition to objects showing up as positive deviators in Δa photometry, we also discuss nine stars which appear opposite the main line of normal stars, and hence are negative deviators. For most of them, the interpretation as emission stars of B-type seems to be appropriate. The statistically relevant number of observations obtained so far in the LMC supports the view that the formation of magnetic peculiar stars has occurred there at a significantly lower rate.
publishDate 2005
dc.date.none.fl_str_mv 2005-09
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/11336/100280
Paunzen, E.; Pintado, Olga Ines; Maitzen, H. M.; Claret Dos Santos, Antonio; On the incidence of chemically peculiar stars in the Large Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 362; 3; 9-2005; 1025-1030
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/100280
identifier_str_mv Paunzen, E.; Pintado, Olga Ines; Maitzen, H. M.; Claret Dos Santos, Antonio; On the incidence of chemically peculiar stars in the Large Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 362; 3; 9-2005; 1025-1030
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.1365-2966.2005.09371.x
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/362/3/1025/976364
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/astro-ph/0507564
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_ 1846781822243962880
score 12.982451

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