The globular cluster system of NGC 1316 II. The extraordinary object SH2

Autores
Richtler, T.; Kumar, B.; Bassino, Lilia Patricia; Dirsch, B.; Romanowsky, A. J.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context: SH2 has been described as an isolated HII-region, located about 6.5 south of the nucleus of NGC 1316 (Fornax A), a merger remnant in the the outskirts of the Fornax cluster of galaxies. Aims: We give a first, preliminary description of the stellar content and environment of this remarkable object. Methods: We used photometric data in the Washington system and HST photometry from the Hubble Legacy Archive for a morphological description and preliminary aperture photometry. Low-resolution spectroscopy provides radial velocities of the brightest star cluster in SH2 and a nearby intermediate-age cluster. Results: SH2 is not a normal HII-region, ionized by very young stars. It contains a multitude of star clusters with ages of approximately 108 yr. A ring-like morphology is striking. SH2 seems to be connected to an intermediate-age massive globular cluster with a similar radial velocity, which itself is the main object of a group of fainter clusters. Metallicity estimates from emission lines remain ambiguous. Conclusions: The present data do not yet allow firm conclusions about the nature or origin of SH2. It might be a dwarf galaxy that has experienced a burst of extremely clustered star formation. We may witness how globular clusters are donated to a parent galaxy.
Fil: Richtler, T.. Universidad de Concepción; Chile
Fil: Kumar, B.. Aryabhatta Research Institute of Observational Sciences; India
Fil: Bassino, Lilia Patricia. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Dirsch, B.. Friedrich Ebert Gymnasium; Alemania
Fil: Romanowsky, A. J. . University of California; Estados Unidos
Materia
GALAXIES
STAR CLUSTERS
PECULIAR
ISM
NGC 1316
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:11336/10595
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10595
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The globular cluster system of NGC 1316 II. The extraordinary object SH2Richtler, T.Kumar, B.Bassino, Lilia PatriciaDirsch, B.Romanowsky, A. J. GALAXIESSTAR CLUSTERSPECULIARISMNGC 1316https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context: SH2 has been described as an isolated HII-region, located about 6.5 south of the nucleus of NGC 1316 (Fornax A), a merger remnant in the the outskirts of the Fornax cluster of galaxies. Aims: We give a first, preliminary description of the stellar content and environment of this remarkable object. Methods: We used photometric data in the Washington system and HST photometry from the Hubble Legacy Archive for a morphological description and preliminary aperture photometry. Low-resolution spectroscopy provides radial velocities of the brightest star cluster in SH2 and a nearby intermediate-age cluster. Results: SH2 is not a normal HII-region, ionized by very young stars. It contains a multitude of star clusters with ages of approximately 108 yr. A ring-like morphology is striking. SH2 seems to be connected to an intermediate-age massive globular cluster with a similar radial velocity, which itself is the main object of a group of fainter clusters. Metallicity estimates from emission lines remain ambiguous. Conclusions: The present data do not yet allow firm conclusions about the nature or origin of SH2. It might be a dwarf galaxy that has experienced a burst of extremely clustered star formation. We may witness how globular clusters are donated to a parent galaxy.Fil: Richtler, T.. Universidad de Concepción; ChileFil: Kumar, B.. Aryabhatta Research Institute of Observational Sciences; IndiaFil: Bassino, Lilia Patricia. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Dirsch, B.. Friedrich Ebert Gymnasium; AlemaniaFil: Romanowsky, A. J. . University of California; Estados UnidosEdp Sciences2012-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10595Richtler, T.; Kumar, B.; Bassino, Lilia Patricia; Dirsch, B.; Romanowsky, A. J. ; The globular cluster system of NGC 1316 II. The extraordinary object SH2; Edp Sciences; Astronomy And Astrophysics; 543; 7-2012; 1-40004-6361enginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201219075info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2012/07/aa19075-12/aa19075-12.htmlinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1203.2463info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:41:04Zoai:ri.conicet.gov.ar:11336/10595instacron: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 09:41:04.622CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The globular cluster system of NGC 1316 II. The extraordinary object SH2
title The globular cluster system of NGC 1316 II. The extraordinary object SH2
spellingShingle The globular cluster system of NGC 1316 II. The extraordinary object SH2
Richtler, T.
GALAXIES
STAR CLUSTERS
PECULIAR
ISM
NGC 1316
title_short The globular cluster system of NGC 1316 II. The extraordinary object SH2
title_full The globular cluster system of NGC 1316 II. The extraordinary object SH2
title_fullStr The globular cluster system of NGC 1316 II. The extraordinary object SH2
title_full_unstemmed The globular cluster system of NGC 1316 II. The extraordinary object SH2
title_sort The globular cluster system of NGC 1316 II. The extraordinary object SH2
dc.creator.none.fl_str_mv Richtler, T.
Kumar, B.
Bassino, Lilia Patricia
Dirsch, B.
Romanowsky, A. J.
author Richtler, T.
author_facet Richtler, T.
Kumar, B.
Bassino, Lilia Patricia
Dirsch, B.
Romanowsky, A. J.
author_role author
author2 Kumar, B.
Bassino, Lilia Patricia
Dirsch, B.
Romanowsky, A. J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv GALAXIES
STAR CLUSTERS
PECULIAR
ISM
NGC 1316
topic GALAXIES
STAR CLUSTERS
PECULIAR
ISM
NGC 1316
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: SH2 has been described as an isolated HII-region, located about 6.5 south of the nucleus of NGC 1316 (Fornax A), a merger remnant in the the outskirts of the Fornax cluster of galaxies. Aims: We give a first, preliminary description of the stellar content and environment of this remarkable object. Methods: We used photometric data in the Washington system and HST photometry from the Hubble Legacy Archive for a morphological description and preliminary aperture photometry. Low-resolution spectroscopy provides radial velocities of the brightest star cluster in SH2 and a nearby intermediate-age cluster. Results: SH2 is not a normal HII-region, ionized by very young stars. It contains a multitude of star clusters with ages of approximately 108 yr. A ring-like morphology is striking. SH2 seems to be connected to an intermediate-age massive globular cluster with a similar radial velocity, which itself is the main object of a group of fainter clusters. Metallicity estimates from emission lines remain ambiguous. Conclusions: The present data do not yet allow firm conclusions about the nature or origin of SH2. It might be a dwarf galaxy that has experienced a burst of extremely clustered star formation. We may witness how globular clusters are donated to a parent galaxy.
Fil: Richtler, T.. Universidad de Concepción; Chile
Fil: Kumar, B.. Aryabhatta Research Institute of Observational Sciences; India
Fil: Bassino, Lilia Patricia. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Dirsch, B.. Friedrich Ebert Gymnasium; Alemania
Fil: Romanowsky, A. J. . University of California; Estados Unidos
description Context: SH2 has been described as an isolated HII-region, located about 6.5 south of the nucleus of NGC 1316 (Fornax A), a merger remnant in the the outskirts of the Fornax cluster of galaxies. Aims: We give a first, preliminary description of the stellar content and environment of this remarkable object. Methods: We used photometric data in the Washington system and HST photometry from the Hubble Legacy Archive for a morphological description and preliminary aperture photometry. Low-resolution spectroscopy provides radial velocities of the brightest star cluster in SH2 and a nearby intermediate-age cluster. Results: SH2 is not a normal HII-region, ionized by very young stars. It contains a multitude of star clusters with ages of approximately 108 yr. A ring-like morphology is striking. SH2 seems to be connected to an intermediate-age massive globular cluster with a similar radial velocity, which itself is the main object of a group of fainter clusters. Metallicity estimates from emission lines remain ambiguous. Conclusions: The present data do not yet allow firm conclusions about the nature or origin of SH2. It might be a dwarf galaxy that has experienced a burst of extremely clustered star formation. We may witness how globular clusters are donated to a parent galaxy.
publishDate 2012
dc.date.none.fl_str_mv 2012-07
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/11336/10595
Richtler, T.; Kumar, B.; Bassino, Lilia Patricia; Dirsch, B.; Romanowsky, A. J. ; The globular cluster system of NGC 1316 II. The extraordinary object SH2; Edp Sciences; Astronomy And Astrophysics; 543; 7-2012; 1-4
0004-6361
url http://hdl.handle.net/11336/10595
identifier_str_mv Richtler, T.; Kumar, B.; Bassino, Lilia Patricia; Dirsch, B.; Romanowsky, A. J. ; The globular cluster system of NGC 1316 II. The extraordinary object SH2; Edp Sciences; Astronomy And Astrophysics; 543; 7-2012; 1-4
0004-6361
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201219075
info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/articles/aa/abs/2012/07/aa19075-12/aa19075-12.html
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1203.2463
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 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 13.070432

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