Gemini spectroscopy of the outer disk star cluster BH176

Autores
Sharina, M. E.; Donzelli, Carlos Jose; Davoust, E.; Shimansky, V. V.; Charbonnel, C.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context: BH176 is an old metal-rich star cluster. It is spatially and kinematically consistent with belonging to the Monoceros Ring. It is larger in size and more distant from the Galactic plane than typical open clusters, and it does not belong to the Galactic bulge. Aims: Our aim is to determine the origin of this unique object by accurately determining its distance, metallicity, and age. The best way to reach this goal is to combine spectroscopic and photometric methods. Methods: We present medium-resolution observations of red clump and red giant branch stars in BH176 obtained with the Gemini South Multi-Object Spectrograph. We derive radial velocities, metallicities, effective temperatures, and surface gravities of the observed stars and use these parameters to distinguish member stars from field objects. Results: We determine the following parameters for BH176: Vh = 0 ± 15 km s-1, [Fe/H] = −0.1 ± 0.1, age 7 ± 0.5 Gyr, E(V − I) = 0.79 ± 0.03, distance 15.2 ± 0.2 kpc, α-element abundance [α/Fe] ~ 0.25 dex (the mean of [Mg/Fe], and [Ca/Fe]). Conclusions: BH176 is a member of old Galactic open clusters that presumably belong to the thick disk. It may have originated as a massive star cluster after the encounter of the forming thin disk with a high-velocity gas cloud or as a satellite dwarf galaxy.
Fil: Sharina, M. E.. Russian Academy of Sciences; Rusia
Fil: Donzelli, Carlos Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; Argentina
Fil: Davoust, E.. Université de Toulouse; Francia
Fil: Shimansky, V. V.. Kazan Federal University; Rusia
Fil: Charbonnel, C.. Universidad de Ginebra; Suiza
Materia
Cumulos
Globulares
Galaxia
Fotometria
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:11336/32376
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/32376
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Gemini spectroscopy of the outer disk star cluster BH176Sharina, M. E.Donzelli, Carlos JoseDavoust, E.Shimansky, V. V.Charbonnel, C.CumulosGlobularesGalaxiaFotometriahttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context: BH176 is an old metal-rich star cluster. It is spatially and kinematically consistent with belonging to the Monoceros Ring. It is larger in size and more distant from the Galactic plane than typical open clusters, and it does not belong to the Galactic bulge. Aims: Our aim is to determine the origin of this unique object by accurately determining its distance, metallicity, and age. The best way to reach this goal is to combine spectroscopic and photometric methods. Methods: We present medium-resolution observations of red clump and red giant branch stars in BH176 obtained with the Gemini South Multi-Object Spectrograph. We derive radial velocities, metallicities, effective temperatures, and surface gravities of the observed stars and use these parameters to distinguish member stars from field objects. Results: We determine the following parameters for BH176: Vh = 0 ± 15 km s-1, [Fe/H] = −0.1 ± 0.1, age 7 ± 0.5 Gyr, E(V − I) = 0.79 ± 0.03, distance 15.2 ± 0.2 kpc, α-element abundance [α/Fe] ~ 0.25 dex (the mean of [Mg/Fe], and [Ca/Fe]). Conclusions: BH176 is a member of old Galactic open clusters that presumably belong to the thick disk. It may have originated as a massive star cluster after the encounter of the forming thin disk with a high-velocity gas cloud or as a satellite dwarf galaxy.Fil: Sharina, M. E.. Russian Academy of Sciences; RusiaFil: Donzelli, Carlos Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; ArgentinaFil: Davoust, E.. Université de Toulouse; FranciaFil: Shimansky, V. V.. Kazan Federal University; RusiaFil: Charbonnel, C.. Universidad de Ginebra; SuizaEDP Sciences2014-10info: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/11336/32376Charbonnel, C.; Shimansky, V. V.; Davoust, E.; Donzelli, Carlos Jose; Sharina, M. E.; Gemini spectroscopy of the outer disk star cluster BH176; EDP Sciences; Astronomy and Astrophysics; 570; 10-2014; 48-63; A480004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1408.1629info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201423627info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2014/10/aa23627-14/aa23627-14.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:33Zoai:ri.conicet.gov.ar:11336/32376instacron: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:34982025-09-03 09:57:33.327CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Gemini spectroscopy of the outer disk star cluster BH176
title Gemini spectroscopy of the outer disk star cluster BH176
spellingShingle Gemini spectroscopy of the outer disk star cluster BH176
Sharina, M. E.
Cumulos
Globulares
Galaxia
Fotometria
title_short Gemini spectroscopy of the outer disk star cluster BH176
title_full Gemini spectroscopy of the outer disk star cluster BH176
title_fullStr Gemini spectroscopy of the outer disk star cluster BH176
title_full_unstemmed Gemini spectroscopy of the outer disk star cluster BH176
title_sort Gemini spectroscopy of the outer disk star cluster BH176
dc.creator.none.fl_str_mv Sharina, M. E.
Donzelli, Carlos Jose
Davoust, E.
Shimansky, V. V.
Charbonnel, C.
author Sharina, M. E.
author_facet Sharina, M. E.
Donzelli, Carlos Jose
Davoust, E.
Shimansky, V. V.
Charbonnel, C.
author_role author
author2 Donzelli, Carlos Jose
Davoust, E.
Shimansky, V. V.
Charbonnel, C.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cumulos
Globulares
Galaxia
Fotometria
topic Cumulos
Globulares
Galaxia
Fotometria
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context: BH176 is an old metal-rich star cluster. It is spatially and kinematically consistent with belonging to the Monoceros Ring. It is larger in size and more distant from the Galactic plane than typical open clusters, and it does not belong to the Galactic bulge. Aims: Our aim is to determine the origin of this unique object by accurately determining its distance, metallicity, and age. The best way to reach this goal is to combine spectroscopic and photometric methods. Methods: We present medium-resolution observations of red clump and red giant branch stars in BH176 obtained with the Gemini South Multi-Object Spectrograph. We derive radial velocities, metallicities, effective temperatures, and surface gravities of the observed stars and use these parameters to distinguish member stars from field objects. Results: We determine the following parameters for BH176: Vh = 0 ± 15 km s-1, [Fe/H] = −0.1 ± 0.1, age 7 ± 0.5 Gyr, E(V − I) = 0.79 ± 0.03, distance 15.2 ± 0.2 kpc, α-element abundance [α/Fe] ~ 0.25 dex (the mean of [Mg/Fe], and [Ca/Fe]). Conclusions: BH176 is a member of old Galactic open clusters that presumably belong to the thick disk. It may have originated as a massive star cluster after the encounter of the forming thin disk with a high-velocity gas cloud or as a satellite dwarf galaxy.
Fil: Sharina, M. E.. Russian Academy of Sciences; Rusia
Fil: Donzelli, Carlos Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomia Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomia Teórica y Experimental; Argentina
Fil: Davoust, E.. Université de Toulouse; Francia
Fil: Shimansky, V. V.. Kazan Federal University; Rusia
Fil: Charbonnel, C.. Universidad de Ginebra; Suiza
description Context: BH176 is an old metal-rich star cluster. It is spatially and kinematically consistent with belonging to the Monoceros Ring. It is larger in size and more distant from the Galactic plane than typical open clusters, and it does not belong to the Galactic bulge. Aims: Our aim is to determine the origin of this unique object by accurately determining its distance, metallicity, and age. The best way to reach this goal is to combine spectroscopic and photometric methods. Methods: We present medium-resolution observations of red clump and red giant branch stars in BH176 obtained with the Gemini South Multi-Object Spectrograph. We derive radial velocities, metallicities, effective temperatures, and surface gravities of the observed stars and use these parameters to distinguish member stars from field objects. Results: We determine the following parameters for BH176: Vh = 0 ± 15 km s-1, [Fe/H] = −0.1 ± 0.1, age 7 ± 0.5 Gyr, E(V − I) = 0.79 ± 0.03, distance 15.2 ± 0.2 kpc, α-element abundance [α/Fe] ~ 0.25 dex (the mean of [Mg/Fe], and [Ca/Fe]). Conclusions: BH176 is a member of old Galactic open clusters that presumably belong to the thick disk. It may have originated as a massive star cluster after the encounter of the forming thin disk with a high-velocity gas cloud or as a satellite dwarf galaxy.
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/11336/32376
Charbonnel, C.; Shimansky, V. V.; Davoust, E.; Donzelli, Carlos Jose; Sharina, M. E.; Gemini spectroscopy of the outer disk star cluster BH176; EDP Sciences; Astronomy and Astrophysics; 570; 10-2014; 48-63; A48
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32376
identifier_str_mv Charbonnel, C.; Shimansky, V. V.; Davoust, E.; Donzelli, Carlos Jose; Sharina, M. E.; Gemini spectroscopy of the outer disk star cluster BH176; EDP Sciences; Astronomy and Astrophysics; 570; 10-2014; 48-63; A48
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1408.1629
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201423627
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2014/10/aa23627-14/aa23627-14.html
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 EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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 13.13397

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