Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172

Autores
Ennis, Ana Inés; Caso, Juan Pablo; Bassino, Lilia Patricia; Salinas, Ricardo; Gómez, Matías
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a wide-field study of the globular cluster system (GCS) of the field lenticular galaxy NGC 1172, based on observations from GMOS/Gemini (optical), FourStar/Magellan (NIR), and archival data from ACS/HST (optical). This analysis covers the full extension of the GCS, and results in a value of specific frequency (S_N=8.6 ± 1.5) peculiarly high for an intermediate-mass galaxy in a low-density environment such as this one. We find that the GCS appears to be bimodal, although the colour distribution is narrow and does not allow for an accurate separation of the subpopulations. However, the combination of optical and NIR filters allows us to obtain an estimation of the metallicity distribution based on the photometry, which supports bimodality. We conclude that the presence of a large fraction of metal-poor globular clusters (GCs) and the high specific frequency point to NGC 1172 having accreted a significant amount of GCs from low-mass satellites in the past.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Galaxies: elliptical and lenticular, cD
Galaxies: star clusters: individual: NGC 1172
Galaxies: evolution
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/125606
Acceder
id SEDICI_81213244300d5f7352eff9c7ee270b91
oai_identifier_str oai:sedici.unlp.edu.ar:10915/125606
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172Ennis, Ana InésCaso, Juan PabloBassino, Lilia PatriciaSalinas, RicardoGómez, MatíasCiencias AstronómicasGalaxies: elliptical and lenticular, cDGalaxies: star clusters: individual: NGC 1172Galaxies: evolutionWe present a wide-field study of the globular cluster system (GCS) of the field lenticular galaxy NGC 1172, based on observations from GMOS/Gemini (optical), FourStar/Magellan (NIR), and archival data from ACS/HST (optical). This analysis covers the full extension of the GCS, and results in a value of specific frequency (S_N=8.6 ± 1.5) peculiarly high for an intermediate-mass galaxy in a low-density environment such as this one. We find that the GCS appears to be bimodal, although the colour distribution is narrow and does not allow for an accurate separation of the subpopulations. However, the combination of optical and NIR filters allows us to obtain an estimation of the metallicity distribution based on the photometry, which supports bimodality. We conclude that the presence of a large fraction of metal-poor globular clusters (GCs) and the high specific frequency point to NGC 1172 having accreted a significant amount of GCs from low-mass satellites in the past.Instituto de Astrofísica de La Plata2020-09-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2554-2563http://sedici.unlp.edu.ar/handle/10915/125606enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/issn/1365-2966info:eu-repo/semantics/altIdentifier/arxiv/2009.11375info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa2967info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:29:54Zoai:sedici.unlp.edu.ar:10915/125606Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:54.725SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
title Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
spellingShingle Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
Ennis, Ana Inés
Ciencias Astronómicas
Galaxies: elliptical and lenticular, cD
Galaxies: star clusters: individual: NGC 1172
Galaxies: evolution
title_short Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
title_full Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
title_fullStr Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
title_full_unstemmed Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
title_sort Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172
dc.creator.none.fl_str_mv Ennis, Ana Inés
Caso, Juan Pablo
Bassino, Lilia Patricia
Salinas, Ricardo
Gómez, Matías
author Ennis, Ana Inés
author_facet Ennis, Ana Inés
Caso, Juan Pablo
Bassino, Lilia Patricia
Salinas, Ricardo
Gómez, Matías
author_role author
author2 Caso, Juan Pablo
Bassino, Lilia Patricia
Salinas, Ricardo
Gómez, Matías
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxies: elliptical and lenticular, cD
Galaxies: star clusters: individual: NGC 1172
Galaxies: evolution
topic Ciencias Astronómicas
Galaxies: elliptical and lenticular, cD
Galaxies: star clusters: individual: NGC 1172
Galaxies: evolution
dc.description.none.fl_txt_mv We present a wide-field study of the globular cluster system (GCS) of the field lenticular galaxy NGC 1172, based on observations from GMOS/Gemini (optical), FourStar/Magellan (NIR), and archival data from ACS/HST (optical). This analysis covers the full extension of the GCS, and results in a value of specific frequency (S_N=8.6 ± 1.5) peculiarly high for an intermediate-mass galaxy in a low-density environment such as this one. We find that the GCS appears to be bimodal, although the colour distribution is narrow and does not allow for an accurate separation of the subpopulations. However, the combination of optical and NIR filters allows us to obtain an estimation of the metallicity distribution based on the photometry, which supports bimodality. We conclude that the presence of a large fraction of metal-poor globular clusters (GCs) and the high specific frequency point to NGC 1172 having accreted a significant amount of GCs from low-mass satellites in the past.
Instituto de Astrofísica de La Plata
description We present a wide-field study of the globular cluster system (GCS) of the field lenticular galaxy NGC 1172, based on observations from GMOS/Gemini (optical), FourStar/Magellan (NIR), and archival data from ACS/HST (optical). This analysis covers the full extension of the GCS, and results in a value of specific frequency (S_N=8.6 ± 1.5) peculiarly high for an intermediate-mass galaxy in a low-density environment such as this one. We find that the GCS appears to be bimodal, although the colour distribution is narrow and does not allow for an accurate separation of the subpopulations. However, the combination of optical and NIR filters allows us to obtain an estimation of the metallicity distribution based on the photometry, which supports bimodality. We conclude that the presence of a large fraction of metal-poor globular clusters (GCs) and the high specific frequency point to NGC 1172 having accreted a significant amount of GCs from low-mass satellites in the past.
publishDate 2020
dc.date.none.fl_str_mv 2020-09-26
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/125606
url http://sedici.unlp.edu.ar/handle/10915/125606
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/issn/1365-2966
info:eu-repo/semantics/altIdentifier/arxiv/2009.11375
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa2967
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
2554-2563
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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