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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/85801
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/85801 |
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CONICET Digital (CONICET) |
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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 Técnicas2025-09-29T10:33:28Zoai: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:34982025-09-29 10:33:28.692CONICET 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 |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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1844614350212431872 |
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13.070432 |