Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge

Autores
Palma, Tali; Minniti, Dante; Alonso García, Javier; Crestani, Juliana; Netzel, Henryka; Clariá, Juan José; Saito, Roberto; Dias, Bruno; Fernández Trincado, José G.; Kammers, Roberto; Geisler, Douglas; Gómez, Matías; Hempel, Maren; Pullen, Joyce
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion data set. CMDs were obtained, on one hand, after properly decontaminating the observed diagrams from background/foreground disc stars and other sources. On the other hand, CMDs were also obtained based upon star selection in proper motion diagrams. Taking into account our deep CMDs and LFs analyses, we find that 17 out of 22 new GC candidates may be real and should therefore be followed up, while 5 candidates were discarded from the original sample. We also search for RR Lyrae and Mira variable stars in the fields of these new GC candidates. In particular, we confirm that Minni 40 may be a real cluster. If confirmed by further follow-up analysis, it would be the closest GC to the Galactic centre in projected angular distance, located only 0.5° away from it. We consider that it is very difficult to confirm the physical reality of these small, poorly-populated bulge GCs so in many cases alternative techniques are needed to corroborate our findings.
Fil: Palma, Tali. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Minniti, Dante. Universidad Andrés Bello; Chile. Instituto Milenio de Astrofísica; Chile. Vatican Observatory; Italia
Fil: Alonso García, Javier. Instituto Milenio de Astrofísica; Chile. Universidad de Antofagasta. Centro de Astronomía; Chile
Fil: Crestani, Juliana. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Netzel, Henryka. Nicolaus Copernicus Astronomical Center; Polonia
Fil: Clariá, Juan José. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Saito, Roberto. Universidade Federal de Santa Catarina; Brasil
Fil: Dias, Bruno. Universidad Andrés Bello; Chile. European Southern Observatory Chile; Chile
Fil: Fernández Trincado, José G.. Universidad de Atacama; Chile. Universidad de Concepción; Chile. Université Bourgogne-Franche-Comté; Francia
Fil: Kammers, Roberto. Universidade Federal de Santa Catarina; Brasil
Fil: Geisler, Douglas. Universidad de Concepción; Chile. Universidad de La Serena; Chile
Fil: Gómez, Matías. Universidad Andrés Bello; Chile
Fil: Hempel, Maren. Universidad Andrés Bello; Chile
Fil: Pullen, Joyce. Universidad Andrés Bello; Chile
Materia
GALAXY: BULGE
GLOBULAR 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:11336/131700
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulgePalma, TaliMinniti, DanteAlonso García, JavierCrestani, JulianaNetzel, HenrykaClariá, Juan JoséSaito, RobertoDias, BrunoFernández Trincado, José G.Kammers, RobertoGeisler, DouglasGómez, MatíasHempel, MarenPullen, JoyceGALAXY: BULGEGLOBULAR CLUSTERS: GENERALhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion data set. CMDs were obtained, on one hand, after properly decontaminating the observed diagrams from background/foreground disc stars and other sources. On the other hand, CMDs were also obtained based upon star selection in proper motion diagrams. Taking into account our deep CMDs and LFs analyses, we find that 17 out of 22 new GC candidates may be real and should therefore be followed up, while 5 candidates were discarded from the original sample. We also search for RR Lyrae and Mira variable stars in the fields of these new GC candidates. In particular, we confirm that Minni 40 may be a real cluster. If confirmed by further follow-up analysis, it would be the closest GC to the Galactic centre in projected angular distance, located only 0.5° away from it. We consider that it is very difficult to confirm the physical reality of these small, poorly-populated bulge GCs so in many cases alternative techniques are needed to corroborate our findings.Fil: Palma, Tali. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Minniti, Dante. Universidad Andrés Bello; Chile. Instituto Milenio de Astrofísica; Chile. Vatican Observatory; ItaliaFil: Alonso García, Javier. Instituto Milenio de Astrofísica; Chile. Universidad de Antofagasta. Centro de Astronomía; ChileFil: Crestani, Juliana. Universidade Federal do Rio Grande do Sul; BrasilFil: Netzel, Henryka. Nicolaus Copernicus Astronomical Center; PoloniaFil: Clariá, Juan José. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Saito, Roberto. Universidade Federal de Santa Catarina; BrasilFil: Dias, Bruno. Universidad Andrés Bello; Chile. European Southern Observatory Chile; ChileFil: Fernández Trincado, José G.. Universidad de Atacama; Chile. Universidad de Concepción; Chile. Université Bourgogne-Franche-Comté; FranciaFil: Kammers, Roberto. Universidade Federal de Santa Catarina; BrasilFil: Geisler, Douglas. Universidad de Concepción; Chile. Universidad de La Serena; ChileFil: Gómez, Matías. Universidad Andrés Bello; ChileFil: Hempel, Maren. Universidad Andrés Bello; ChileFil: Pullen, Joyce. Universidad Andrés Bello; ChileWiley Blackwell Publishing, Inc2019-08info: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/11336/131700Palma, Tali; Minniti, Dante; Alonso García, Javier; Crestani, Juliana; Netzel, Henryka; et al.; Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 487; 3; 8-2019; 3140-31490035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz1489info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/487/3/3140/5509599info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1905.11835info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:22:49Zoai:ri.conicet.gov.ar:11336/131700instacron: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:34982025-09-10 13:22:49.235CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
title Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
spellingShingle Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
Palma, Tali
GALAXY: BULGE
GLOBULAR CLUSTERS: GENERAL
title_short Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
title_full Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
title_fullStr Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
title_full_unstemmed Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
title_sort Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge
dc.creator.none.fl_str_mv Palma, Tali
Minniti, Dante
Alonso García, Javier
Crestani, Juliana
Netzel, Henryka
Clariá, Juan José
Saito, Roberto
Dias, Bruno
Fernández Trincado, José G.
Kammers, Roberto
Geisler, Douglas
Gómez, Matías
Hempel, Maren
Pullen, Joyce
author Palma, Tali
author_facet Palma, Tali
Minniti, Dante
Alonso García, Javier
Crestani, Juliana
Netzel, Henryka
Clariá, Juan José
Saito, Roberto
Dias, Bruno
Fernández Trincado, José G.
Kammers, Roberto
Geisler, Douglas
Gómez, Matías
Hempel, Maren
Pullen, Joyce
author_role author
author2 Minniti, Dante
Alonso García, Javier
Crestani, Juliana
Netzel, Henryka
Clariá, Juan José
Saito, Roberto
Dias, Bruno
Fernández Trincado, José G.
Kammers, Roberto
Geisler, Douglas
Gómez, Matías
Hempel, Maren
Pullen, Joyce
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GALAXY: BULGE
GLOBULAR CLUSTERS: GENERAL
topic GALAXY: BULGE
GLOBULAR CLUSTERS: GENERAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion data set. CMDs were obtained, on one hand, after properly decontaminating the observed diagrams from background/foreground disc stars and other sources. On the other hand, CMDs were also obtained based upon star selection in proper motion diagrams. Taking into account our deep CMDs and LFs analyses, we find that 17 out of 22 new GC candidates may be real and should therefore be followed up, while 5 candidates were discarded from the original sample. We also search for RR Lyrae and Mira variable stars in the fields of these new GC candidates. In particular, we confirm that Minni 40 may be a real cluster. If confirmed by further follow-up analysis, it would be the closest GC to the Galactic centre in projected angular distance, located only 0.5° away from it. We consider that it is very difficult to confirm the physical reality of these small, poorly-populated bulge GCs so in many cases alternative techniques are needed to corroborate our findings.
Fil: Palma, Tali. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Minniti, Dante. Universidad Andrés Bello; Chile. Instituto Milenio de Astrofísica; Chile. Vatican Observatory; Italia
Fil: Alonso García, Javier. Instituto Milenio de Astrofísica; Chile. Universidad de Antofagasta. Centro de Astronomía; Chile
Fil: Crestani, Juliana. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Netzel, Henryka. Nicolaus Copernicus Astronomical Center; Polonia
Fil: Clariá, Juan José. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Saito, Roberto. Universidade Federal de Santa Catarina; Brasil
Fil: Dias, Bruno. Universidad Andrés Bello; Chile. European Southern Observatory Chile; Chile
Fil: Fernández Trincado, José G.. Universidad de Atacama; Chile. Universidad de Concepción; Chile. Université Bourgogne-Franche-Comté; Francia
Fil: Kammers, Roberto. Universidade Federal de Santa Catarina; Brasil
Fil: Geisler, Douglas. Universidad de Concepción; Chile. Universidad de La Serena; Chile
Fil: Gómez, Matías. Universidad Andrés Bello; Chile
Fil: Hempel, Maren. Universidad Andrés Bello; Chile
Fil: Pullen, Joyce. Universidad Andrés Bello; Chile
description In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion data set. CMDs were obtained, on one hand, after properly decontaminating the observed diagrams from background/foreground disc stars and other sources. On the other hand, CMDs were also obtained based upon star selection in proper motion diagrams. Taking into account our deep CMDs and LFs analyses, we find that 17 out of 22 new GC candidates may be real and should therefore be followed up, while 5 candidates were discarded from the original sample. We also search for RR Lyrae and Mira variable stars in the fields of these new GC candidates. In particular, we confirm that Minni 40 may be a real cluster. If confirmed by further follow-up analysis, it would be the closest GC to the Galactic centre in projected angular distance, located only 0.5° away from it. We consider that it is very difficult to confirm the physical reality of these small, poorly-populated bulge GCs so in many cases alternative techniques are needed to corroborate our findings.
publishDate 2019
dc.date.none.fl_str_mv 2019-08
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/11336/131700
Palma, Tali; Minniti, Dante; Alonso García, Javier; Crestani, Juliana; Netzel, Henryka; et al.; Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 487; 3; 8-2019; 3140-3149
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/131700
identifier_str_mv Palma, Tali; Minniti, Dante; Alonso García, Javier; Crestani, Juliana; Netzel, Henryka; et al.; Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 487; 3; 8-2019; 3140-3149
0035-8711
1365-2966
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/stz1489
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/487/3/3140/5509599
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1905.11835
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 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
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 12.48226

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