Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud

Autores
Piatti, Andres Eduardo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present spectroscopic and photometric results for the Small Magellanic Cloud (SMC) cluster Bruck 88. From the comparison of the cluster integrated spectrum with template cluster spectra, we found that the Milky Way globular cluster template spectra are the ones which best resemble it. However, the extracted cluster colour–magnitude diagram reveals that Bruck 88 is a young cluster (log(t) = 8.1 ± 0.1). The derived cluster age is compatible with the presence of a bright red giant (BRG) star located ∼2.6 arcsec in the sky from the cluster centre. We serendipitously observed HW 33, a star cluster located ≈3 arcmin to the south-east from Bruck 88. We obtained for the cluster the same age than Bruck 88 and surprisingly, a BRG star located within the cluster radius also appears to be compatible with the cluster age. We estimated the MK type of the BRG star in the Bruck 88 field to be in the range G9 II/Ib–K1 III. By combining the spectrum of a star within this MK type range with a 100–150 Myr template cluster integrated spectrum, we found that a proportion 85/15 in the sense BRG/template results in a spectrum which best resembles that of Bruck 88. This result confirms that a BRG star dominates the cluster integrated spectrum, so that it causes the globular cluster appearance of its integrated light.
Fil: Piatti, Andres Eduardo. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
techniques: photometric
techniques: spectroscopic
galaxies: individual
SMC
Magellanic Clouds
galaxies: star clusters: general
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:11336/34973
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/34973
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic CloudPiatti, Andres Eduardotechniques: photometrictechniques: spectroscopicgalaxies: individualSMCMagellanic Cloudsgalaxies: star clusters: generalhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present spectroscopic and photometric results for the Small Magellanic Cloud (SMC) cluster Bruck 88. From the comparison of the cluster integrated spectrum with template cluster spectra, we found that the Milky Way globular cluster template spectra are the ones which best resemble it. However, the extracted cluster colour–magnitude diagram reveals that Bruck 88 is a young cluster (log(t) = 8.1 ± 0.1). The derived cluster age is compatible with the presence of a bright red giant (BRG) star located ∼2.6 arcsec in the sky from the cluster centre. We serendipitously observed HW 33, a star cluster located ≈3 arcmin to the south-east from Bruck 88. We obtained for the cluster the same age than Bruck 88 and surprisingly, a BRG star located within the cluster radius also appears to be compatible with the cluster age. We estimated the MK type of the BRG star in the Bruck 88 field to be in the range G9 II/Ib–K1 III. By combining the spectrum of a star within this MK type range with a 100–150 Myr template cluster integrated spectrum, we found that a proportion 85/15 in the sense BRG/template results in a spectrum which best resembles that of Bruck 88. This result confirms that a BRG star dominates the cluster integrated spectrum, so that it causes the globular cluster appearance of its integrated light.Fil: Piatti, Andres Eduardo. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaOxford University Press2014-10info: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/11336/34973Piatti, Andres Eduardo; Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 445; 3; 10-2014; 2302-23120035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1917info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/445/3/2302/1046886info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1409.3772info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:12:44Zoai:ri.conicet.gov.ar:11336/34973instacron: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 10:12:45.213CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
title Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
spellingShingle Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
Piatti, Andres Eduardo
techniques: photometric
techniques: spectroscopic
galaxies: individual
SMC
Magellanic Clouds
galaxies: star clusters: general
title_short Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
title_full Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
title_fullStr Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
title_full_unstemmed Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
title_sort Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
author_role author
dc.subject.none.fl_str_mv techniques: photometric
techniques: spectroscopic
galaxies: individual
SMC
Magellanic Clouds
galaxies: star clusters: general
topic techniques: photometric
techniques: spectroscopic
galaxies: individual
SMC
Magellanic Clouds
galaxies: star clusters: general
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present spectroscopic and photometric results for the Small Magellanic Cloud (SMC) cluster Bruck 88. From the comparison of the cluster integrated spectrum with template cluster spectra, we found that the Milky Way globular cluster template spectra are the ones which best resemble it. However, the extracted cluster colour–magnitude diagram reveals that Bruck 88 is a young cluster (log(t) = 8.1 ± 0.1). The derived cluster age is compatible with the presence of a bright red giant (BRG) star located ∼2.6 arcsec in the sky from the cluster centre. We serendipitously observed HW 33, a star cluster located ≈3 arcmin to the south-east from Bruck 88. We obtained for the cluster the same age than Bruck 88 and surprisingly, a BRG star located within the cluster radius also appears to be compatible with the cluster age. We estimated the MK type of the BRG star in the Bruck 88 field to be in the range G9 II/Ib–K1 III. By combining the spectrum of a star within this MK type range with a 100–150 Myr template cluster integrated spectrum, we found that a proportion 85/15 in the sense BRG/template results in a spectrum which best resembles that of Bruck 88. This result confirms that a BRG star dominates the cluster integrated spectrum, so that it causes the globular cluster appearance of its integrated light.
Fil: Piatti, Andres Eduardo. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description We present spectroscopic and photometric results for the Small Magellanic Cloud (SMC) cluster Bruck 88. From the comparison of the cluster integrated spectrum with template cluster spectra, we found that the Milky Way globular cluster template spectra are the ones which best resemble it. However, the extracted cluster colour–magnitude diagram reveals that Bruck 88 is a young cluster (log(t) = 8.1 ± 0.1). The derived cluster age is compatible with the presence of a bright red giant (BRG) star located ∼2.6 arcsec in the sky from the cluster centre. We serendipitously observed HW 33, a star cluster located ≈3 arcmin to the south-east from Bruck 88. We obtained for the cluster the same age than Bruck 88 and surprisingly, a BRG star located within the cluster radius also appears to be compatible with the cluster age. We estimated the MK type of the BRG star in the Bruck 88 field to be in the range G9 II/Ib–K1 III. By combining the spectrum of a star within this MK type range with a 100–150 Myr template cluster integrated spectrum, we found that a proportion 85/15 in the sense BRG/template results in a spectrum which best resembles that of Bruck 88. This result confirms that a BRG star dominates the cluster integrated spectrum, so that it causes the globular cluster appearance of its integrated light.
publishDate 2014
dc.date.none.fl_str_mv 2014-10
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/11336/34973
Piatti, Andres Eduardo; Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 445; 3; 10-2014; 2302-2312
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/34973
identifier_str_mv Piatti, Andres Eduardo; Bruck 88: a young star cluster with an old age resemblance in the outskirts of the Small Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 445; 3; 10-2014; 2302-2312
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/stu1917
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/445/3/2302/1046886
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1409.3772
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 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
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score 13.070432

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