The first Δa observations of three globular clusters

Autores
Paunzen, E.; Illienv, I.Kh.; Pintado, Olga Ines; Baum, H.; Maitzen, M.H.; Netopil, M.; Önehag., A.; Zejda, J.; Fraga, L.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Globular clusters are main astrophysical laboratories to test and modify evolutionary models. Thought to be rather homogeneous in their local elemental distribution of members, results suggest a wide variety of chemical peculiarities. Besides different main sequences, believed to be caused by different helium abundances, peculiarities of blue horizontal-branch stars and on the red giant branch were found. This whole zoo of peculiar objects has to be explained in the context of stellar formation and evolution. The tool of Δ photometry is employed in order to detect peculiar stars in the whole spectral range. This three filter narrowband system measures the flux distribution in the region from 4900 to 5600 Å in order to find any peculiarities around 5200 Å. It is highly efficient to detect classical chemically peculiar stars of the upper main sequence, Be/Ae, shell and metal-weak objects in the Milky Way and Magellanic Clouds. We present Δa photometry of 2266 stars from 109 individual frames for three globular clusters (NGC 104, NGC 6205, and NGC 7099). A comparison with published abundances, for three horizontal-branch stars, only, yields an excellent agreement. According to the 3s detection limit of each globular cluster, about 3 per cent of the stars lie in abnormal regions in the diagnostic diagrams. The first observations of three widely different aggregates give very promising results, which will serve as a solid basis for follow-up observations including photometric as well as spectroscopic studies.
Fil: Paunzen, E.. Masaryk University; República Checa
Fil: Illienv, I.Kh.. Bulgarian Academy of Sciences. Institute of Astronomy. Rozhen National Astronomical Observatory; Bulgaria
Fil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Baum, H.. Technische Universitat Wien; Austria
Fil: Maitzen, M.H.. Technische Universitat Wien; Austria
Fil: Netopil, M.. Technische Universitat Wien; Austria. Masaryk University; República Checa
Fil: Önehag., A.. Uppsala University; Suecia
Fil: Zejda, J.. Masaryk University; República Checa
Fil: Fraga, L.. Southern Observatory for Astrophysical Research,; Chile. Laboratório Nacional de Astrofísica; Brasil
Materia
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 104
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6205
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 7099
STARS: CHEMICALLY PECULIAR
STARS: HORIZONTAL BRANCH
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:11336/85801
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/85801
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The first Δa observations of three globular clustersPaunzen, E.Illienv, I.Kh.Pintado, Olga InesBaum, H.Maitzen, M.H.Netopil, M.Önehag., A.Zejda, J.Fraga, L.GLOBULAR CLUSTERS: INDIVIDUAL: NGC 104GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6205GLOBULAR CLUSTERS: INDIVIDUAL: NGC 7099STARS: CHEMICALLY PECULIARSTARS: HORIZONTAL BRANCHTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1Globular clusters are main astrophysical laboratories to test and modify evolutionary models. Thought to be rather homogeneous in their local elemental distribution of members, results suggest a wide variety of chemical peculiarities. Besides different main sequences, believed to be caused by different helium abundances, peculiarities of blue horizontal-branch stars and on the red giant branch were found. This whole zoo of peculiar objects has to be explained in the context of stellar formation and evolution. The tool of Δ photometry is employed in order to detect peculiar stars in the whole spectral range. This three filter narrowband system measures the flux distribution in the region from 4900 to 5600 Å in order to find any peculiarities around 5200 Å. It is highly efficient to detect classical chemically peculiar stars of the upper main sequence, Be/Ae, shell and metal-weak objects in the Milky Way and Magellanic Clouds. We present Δa photometry of 2266 stars from 109 individual frames for three globular clusters (NGC 104, NGC 6205, and NGC 7099). A comparison with published abundances, for three horizontal-branch stars, only, yields an excellent agreement. According to the 3s detection limit of each globular cluster, about 3 per cent of the stars lie in abnormal regions in the diagnostic diagrams. The first observations of three widely different aggregates give very promising results, which will serve as a solid basis for follow-up observations including photometric as well as spectroscopic studies.Fil: Paunzen, E.. Masaryk University; República ChecaFil: Illienv, I.Kh.. Bulgarian Academy of Sciences. Institute of Astronomy. Rozhen National Astronomical Observatory; BulgariaFil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Baum, H.. Technische Universitat Wien; AustriaFil: Maitzen, M.H.. Technische Universitat Wien; AustriaFil: Netopil, M.. Technische Universitat Wien; Austria. Masaryk University; República ChecaFil: Önehag., A.. Uppsala University; SueciaFil: Zejda, J.. Masaryk University; República ChecaFil: Fraga, L.. Southern Observatory for Astrophysical Research,; Chile. Laboratório Nacional de Astrofísica; BrasilWiley Blackwell Publishing, Inc2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/85801Paunzen, E.; Illienv, I.Kh.; Pintado, Olga Ines; Baum, H.; Maitzen, M.H.; et al.; The first Δa observations of three globular clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 443; 3; 9-2014; 2492-24980035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1276info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/443/3/2492/1748808info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:06:02Zoai:ri.conicet.gov.ar:11336/85801instacron: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 12:06:02.409CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The first Δa observations of three globular clusters
title The first Δa observations of three globular clusters
spellingShingle The first Δa observations of three globular clusters
Paunzen, E.
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 104
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6205
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 7099
STARS: CHEMICALLY PECULIAR
STARS: HORIZONTAL BRANCH
TECHNIQUES: PHOTOMETRIC
title_short The first Δa observations of three globular clusters
title_full The first Δa observations of three globular clusters
title_fullStr The first Δa observations of three globular clusters
title_full_unstemmed The first Δa observations of three globular clusters
title_sort The first Δa observations of three globular clusters
dc.creator.none.fl_str_mv Paunzen, E.
Illienv, I.Kh.
Pintado, Olga Ines
Baum, H.
Maitzen, M.H.
Netopil, M.
Önehag., A.
Zejda, J.
Fraga, L.
author Paunzen, E.
author_facet Paunzen, E.
Illienv, I.Kh.
Pintado, Olga Ines
Baum, H.
Maitzen, M.H.
Netopil, M.
Önehag., A.
Zejda, J.
Fraga, L.
author_role author
author2 Illienv, I.Kh.
Pintado, Olga Ines
Baum, H.
Maitzen, M.H.
Netopil, M.
Önehag., A.
Zejda, J.
Fraga, L.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GLOBULAR CLUSTERS: INDIVIDUAL: NGC 104
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6205
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 7099
STARS: CHEMICALLY PECULIAR
STARS: HORIZONTAL BRANCH
TECHNIQUES: PHOTOMETRIC
topic GLOBULAR CLUSTERS: INDIVIDUAL: NGC 104
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6205
GLOBULAR CLUSTERS: INDIVIDUAL: NGC 7099
STARS: CHEMICALLY PECULIAR
STARS: HORIZONTAL BRANCH
TECHNIQUES: PHOTOMETRIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Globular clusters are main astrophysical laboratories to test and modify evolutionary models. Thought to be rather homogeneous in their local elemental distribution of members, results suggest a wide variety of chemical peculiarities. Besides different main sequences, believed to be caused by different helium abundances, peculiarities of blue horizontal-branch stars and on the red giant branch were found. This whole zoo of peculiar objects has to be explained in the context of stellar formation and evolution. The tool of Δ photometry is employed in order to detect peculiar stars in the whole spectral range. This three filter narrowband system measures the flux distribution in the region from 4900 to 5600 Å in order to find any peculiarities around 5200 Å. It is highly efficient to detect classical chemically peculiar stars of the upper main sequence, Be/Ae, shell and metal-weak objects in the Milky Way and Magellanic Clouds. We present Δa photometry of 2266 stars from 109 individual frames for three globular clusters (NGC 104, NGC 6205, and NGC 7099). A comparison with published abundances, for three horizontal-branch stars, only, yields an excellent agreement. According to the 3s detection limit of each globular cluster, about 3 per cent of the stars lie in abnormal regions in the diagnostic diagrams. The first observations of three widely different aggregates give very promising results, which will serve as a solid basis for follow-up observations including photometric as well as spectroscopic studies.
Fil: Paunzen, E.. Masaryk University; República Checa
Fil: Illienv, I.Kh.. Bulgarian Academy of Sciences. Institute of Astronomy. Rozhen National Astronomical Observatory; Bulgaria
Fil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Baum, H.. Technische Universitat Wien; Austria
Fil: Maitzen, M.H.. Technische Universitat Wien; Austria
Fil: Netopil, M.. Technische Universitat Wien; Austria. Masaryk University; República Checa
Fil: Önehag., A.. Uppsala University; Suecia
Fil: Zejda, J.. Masaryk University; República Checa
Fil: Fraga, L.. Southern Observatory for Astrophysical Research,; Chile. Laboratório Nacional de Astrofísica; Brasil
description Globular clusters are main astrophysical laboratories to test and modify evolutionary models. Thought to be rather homogeneous in their local elemental distribution of members, results suggest a wide variety of chemical peculiarities. Besides different main sequences, believed to be caused by different helium abundances, peculiarities of blue horizontal-branch stars and on the red giant branch were found. This whole zoo of peculiar objects has to be explained in the context of stellar formation and evolution. The tool of Δ photometry is employed in order to detect peculiar stars in the whole spectral range. This three filter narrowband system measures the flux distribution in the region from 4900 to 5600 Å in order to find any peculiarities around 5200 Å. It is highly efficient to detect classical chemically peculiar stars of the upper main sequence, Be/Ae, shell and metal-weak objects in the Milky Way and Magellanic Clouds. We present Δa photometry of 2266 stars from 109 individual frames for three globular clusters (NGC 104, NGC 6205, and NGC 7099). A comparison with published abundances, for three horizontal-branch stars, only, yields an excellent agreement. According to the 3s detection limit of each globular cluster, about 3 per cent of the stars lie in abnormal regions in the diagnostic diagrams. The first observations of three widely different aggregates give very promising results, which will serve as a solid basis for follow-up observations including photometric as well as spectroscopic studies.
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/11336/85801
Paunzen, E.; Illienv, I.Kh.; Pintado, Olga Ines; Baum, H.; Maitzen, M.H.; et al.; The first Δa observations of three globular clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 443; 3; 9-2014; 2492-2498
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/85801
identifier_str_mv Paunzen, E.; Illienv, I.Kh.; Pintado, Olga Ines; Baum, H.; Maitzen, M.H.; et al.; The first Δa observations of three globular clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 443; 3; 9-2014; 2492-2498
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/10.1093/mnras/stu1276
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/443/3/2492/1748808
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 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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score 12.982451

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