Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge

Autores
Minniti, Dante; Schlafly, Edward; Palma, Tali; Clariá, Juan José; Hempel, Maren; García Alonso, José; Bica, Eduardo; Bonatto, Charles; Braga, Vittorio; Clementini, Gisella; Garofalo, Alessia; Gómez, Matías Miguel; Ivanov, Valentin D.; Lucas, Phillip W.; Pullen, Joyce; Saito, Roberto K.; Smith, Leigh C.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We use deep near-IR photometry of the VISTA Variables in the Vía Láctea (VVV) Survey and deep DECam PlaneSurvey (DECaPS) optical photometry to confirm the physical reality of the candidate globular cluster (GC) Minni22, which is located in the Galactic bulge. This object, which was detected as a high density region in our maps ofbulge red giants, is now confirmed as a real GC based on the optical and near-IR color?magnitude diagrams. Wealso recover three known fundamental mode (ab type) RR Lyrae stars within 2 arcmin of the cluster center. Thepresence of RR Lyrae stars also seems to confirm Minni 22 as a bonafide old and metal-poor GC. We estimate acluster reddening E(J-Ks) = 0.6 mag and determine its heliocentric distance D = 7.4 ± 0.3 kpc. The opticaland near-IR color?magnitude diagrams reveal well-defined red giant branches in all cases, including a red giantbranch bump at Ks = 13.30 ± 0.05 mag. The comparison with theoretical isochrones yields a mean metallicity of[Fe/H] = −1.3 ± 0.3 dex, and age of t ∼ 11.2 Gyr. This is a good example of a new low-luminosity(M_V = −6.2 mag) GC found in the central bulge of the Milky Way. After discussing the different ways to confirmthe existence of bulge GC candidates, we find that one of the best methods is to use the CMDs from thecombination of the DECaPS + VVV photometries
Fil: Minniti, Dante. Universidad Andrés Bello; Chile
Fil: Schlafly, Edward. Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Palma, Tali. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina
Fil: Hempel, Maren. Pontificia Universidad Católica de Chile; Chile
Fil: García Alonso, José. Universidad de Antofagasta; Chile
Fil: Bica, Eduardo. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Bonatto, Charles. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Braga, Vittorio. Universidad Andrés Bello; Chile
Fil: Clementini, Gisella. Osservatorio Astronomico di Bologna; Italia
Fil: Garofalo, Alessia. Osservatorio Astronomico di Bologna; Italia
Fil: Gómez, Matías Miguel. Universidad Andrés Bello; Chile
Fil: Ivanov, Valentin D.. European Southern Observatory Chile.; Chile
Fil: Lucas, Phillip W.. University Of Hertfordshire; Reino Unido
Fil: Pullen, Joyce. Instituto Milenio de Astrofísica; Chile
Fil: Saito, Roberto K.. Universidade Federal de Santa Catarina; Brasil
Fil: Smith, Leigh C.. University of Cambridge; Reino Unido. European Southern Observatory; Alemania
Materia
BULGE
EVOLUTION
GLOBULAR CLUSTERS
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:11336/102838

id CONICETDig_86ff8015dc8343273f4d62b094b41152
oai_identifier_str oai:ri.conicet.gov.ar:11336/102838
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Confirmation of a New Metal-poor Globular Cluster in the Galactic BulgeMinniti, DanteSchlafly, EdwardPalma, TaliClariá, Juan JoséHempel, MarenGarcía Alonso, JoséBica, EduardoBonatto, CharlesBraga, VittorioClementini, GisellaGarofalo, AlessiaGómez, Matías MiguelIvanov, Valentin D.Lucas, Phillip W.Pullen, JoyceSaito, Roberto K.Smith, Leigh C.BULGEEVOLUTIONGLOBULAR CLUSTERShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We use deep near-IR photometry of the VISTA Variables in the Vía Láctea (VVV) Survey and deep DECam PlaneSurvey (DECaPS) optical photometry to confirm the physical reality of the candidate globular cluster (GC) Minni22, which is located in the Galactic bulge. This object, which was detected as a high density region in our maps ofbulge red giants, is now confirmed as a real GC based on the optical and near-IR color?magnitude diagrams. Wealso recover three known fundamental mode (ab type) RR Lyrae stars within 2 arcmin of the cluster center. Thepresence of RR Lyrae stars also seems to confirm Minni 22 as a bonafide old and metal-poor GC. We estimate acluster reddening E(J-Ks) = 0.6 mag and determine its heliocentric distance D = 7.4 ± 0.3 kpc. The opticaland near-IR color?magnitude diagrams reveal well-defined red giant branches in all cases, including a red giantbranch bump at Ks = 13.30 ± 0.05 mag. The comparison with theoretical isochrones yields a mean metallicity of[Fe/H] = −1.3 ± 0.3 dex, and age of t ∼ 11.2 Gyr. This is a good example of a new low-luminosity(M_V = −6.2 mag) GC found in the central bulge of the Milky Way. After discussing the different ways to confirmthe existence of bulge GC candidates, we find that one of the best methods is to use the CMDs from thecombination of the DECaPS + VVV photometriesFil: Minniti, Dante. Universidad Andrés Bello; ChileFil: Schlafly, Edward. Lawrence Berkeley National Laboratory; Estados UnidosFil: Palma, Tali. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Observatorio Astronomico de la Universidad Nacional de Cordoba; ArgentinaFil: Hempel, Maren. Pontificia Universidad Católica de Chile; ChileFil: García Alonso, José. Universidad de Antofagasta; ChileFil: Bica, Eduardo. Universidade Federal do Rio Grande do Sul; BrasilFil: Bonatto, Charles. Universidade Federal do Rio Grande do Sul; BrasilFil: Braga, Vittorio. Universidad Andrés Bello; ChileFil: Clementini, Gisella. Osservatorio Astronomico di Bologna; ItaliaFil: Garofalo, Alessia. Osservatorio Astronomico di Bologna; ItaliaFil: Gómez, Matías Miguel. Universidad Andrés Bello; ChileFil: Ivanov, Valentin D.. European Southern Observatory Chile.; ChileFil: Lucas, Phillip W.. University Of Hertfordshire; Reino UnidoFil: Pullen, Joyce. Instituto Milenio de Astrofísica; ChileFil: Saito, Roberto K.. Universidade Federal de Santa Catarina; BrasilFil: Smith, Leigh C.. University of Cambridge; Reino Unido. European Southern Observatory; AlemaniaIOP Publishing2018-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/102838Minniti, Dante; Schlafly, Edward; Palma, Tali; Clariá, Juan José; Hempel, Maren; et al.; Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge; IOP Publishing; Astrophysical Journal; 866; 10-2018; 12-230004-637X1538-4357CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aadd06info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aadd06info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:42:17Zoai:ri.conicet.gov.ar:11336/102838instacron: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 10:42:17.356CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
title Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
spellingShingle Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
Minniti, Dante
BULGE
EVOLUTION
GLOBULAR CLUSTERS
title_short Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
title_full Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
title_fullStr Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
title_full_unstemmed Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
title_sort Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge
dc.creator.none.fl_str_mv Minniti, Dante
Schlafly, Edward
Palma, Tali
Clariá, Juan José
Hempel, Maren
García Alonso, José
Bica, Eduardo
Bonatto, Charles
Braga, Vittorio
Clementini, Gisella
Garofalo, Alessia
Gómez, Matías Miguel
Ivanov, Valentin D.
Lucas, Phillip W.
Pullen, Joyce
Saito, Roberto K.
Smith, Leigh C.
author Minniti, Dante
author_facet Minniti, Dante
Schlafly, Edward
Palma, Tali
Clariá, Juan José
Hempel, Maren
García Alonso, José
Bica, Eduardo
Bonatto, Charles
Braga, Vittorio
Clementini, Gisella
Garofalo, Alessia
Gómez, Matías Miguel
Ivanov, Valentin D.
Lucas, Phillip W.
Pullen, Joyce
Saito, Roberto K.
Smith, Leigh C.
author_role author
author2 Schlafly, Edward
Palma, Tali
Clariá, Juan José
Hempel, Maren
García Alonso, José
Bica, Eduardo
Bonatto, Charles
Braga, Vittorio
Clementini, Gisella
Garofalo, Alessia
Gómez, Matías Miguel
Ivanov, Valentin D.
Lucas, Phillip W.
Pullen, Joyce
Saito, Roberto K.
Smith, Leigh C.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BULGE
EVOLUTION
GLOBULAR CLUSTERS
topic BULGE
EVOLUTION
GLOBULAR CLUSTERS
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 use deep near-IR photometry of the VISTA Variables in the Vía Láctea (VVV) Survey and deep DECam PlaneSurvey (DECaPS) optical photometry to confirm the physical reality of the candidate globular cluster (GC) Minni22, which is located in the Galactic bulge. This object, which was detected as a high density region in our maps ofbulge red giants, is now confirmed as a real GC based on the optical and near-IR color?magnitude diagrams. Wealso recover three known fundamental mode (ab type) RR Lyrae stars within 2 arcmin of the cluster center. Thepresence of RR Lyrae stars also seems to confirm Minni 22 as a bonafide old and metal-poor GC. We estimate acluster reddening E(J-Ks) = 0.6 mag and determine its heliocentric distance D = 7.4 ± 0.3 kpc. The opticaland near-IR color?magnitude diagrams reveal well-defined red giant branches in all cases, including a red giantbranch bump at Ks = 13.30 ± 0.05 mag. The comparison with theoretical isochrones yields a mean metallicity of[Fe/H] = −1.3 ± 0.3 dex, and age of t ∼ 11.2 Gyr. This is a good example of a new low-luminosity(M_V = −6.2 mag) GC found in the central bulge of the Milky Way. After discussing the different ways to confirmthe existence of bulge GC candidates, we find that one of the best methods is to use the CMDs from thecombination of the DECaPS + VVV photometries
Fil: Minniti, Dante. Universidad Andrés Bello; Chile
Fil: Schlafly, Edward. Lawrence Berkeley National Laboratory; Estados Unidos
Fil: Palma, Tali. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina
Fil: Hempel, Maren. Pontificia Universidad Católica de Chile; Chile
Fil: García Alonso, José. Universidad de Antofagasta; Chile
Fil: Bica, Eduardo. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Bonatto, Charles. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Braga, Vittorio. Universidad Andrés Bello; Chile
Fil: Clementini, Gisella. Osservatorio Astronomico di Bologna; Italia
Fil: Garofalo, Alessia. Osservatorio Astronomico di Bologna; Italia
Fil: Gómez, Matías Miguel. Universidad Andrés Bello; Chile
Fil: Ivanov, Valentin D.. European Southern Observatory Chile.; Chile
Fil: Lucas, Phillip W.. University Of Hertfordshire; Reino Unido
Fil: Pullen, Joyce. Instituto Milenio de Astrofísica; Chile
Fil: Saito, Roberto K.. Universidade Federal de Santa Catarina; Brasil
Fil: Smith, Leigh C.. University of Cambridge; Reino Unido. European Southern Observatory; Alemania
description We use deep near-IR photometry of the VISTA Variables in the Vía Láctea (VVV) Survey and deep DECam PlaneSurvey (DECaPS) optical photometry to confirm the physical reality of the candidate globular cluster (GC) Minni22, which is located in the Galactic bulge. This object, which was detected as a high density region in our maps ofbulge red giants, is now confirmed as a real GC based on the optical and near-IR color?magnitude diagrams. Wealso recover three known fundamental mode (ab type) RR Lyrae stars within 2 arcmin of the cluster center. Thepresence of RR Lyrae stars also seems to confirm Minni 22 as a bonafide old and metal-poor GC. We estimate acluster reddening E(J-Ks) = 0.6 mag and determine its heliocentric distance D = 7.4 ± 0.3 kpc. The opticaland near-IR color?magnitude diagrams reveal well-defined red giant branches in all cases, including a red giantbranch bump at Ks = 13.30 ± 0.05 mag. The comparison with theoretical isochrones yields a mean metallicity of[Fe/H] = −1.3 ± 0.3 dex, and age of t ∼ 11.2 Gyr. This is a good example of a new low-luminosity(M_V = −6.2 mag) GC found in the central bulge of the Milky Way. After discussing the different ways to confirmthe existence of bulge GC candidates, we find that one of the best methods is to use the CMDs from thecombination of the DECaPS + VVV photometries
publishDate 2018
dc.date.none.fl_str_mv 2018-10
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/11336/102838
Minniti, Dante; Schlafly, Edward; Palma, Tali; Clariá, Juan José; Hempel, Maren; et al.; Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge; IOP Publishing; Astrophysical Journal; 866; 10-2018; 12-23
0004-637X
1538-4357
CONICET Digital
CONICET
url http://hdl.handle.net/11336/102838
identifier_str_mv Minniti, Dante; Schlafly, Edward; Palma, Tali; Clariá, Juan José; Hempel, Maren; et al.; Confirmation of a New Metal-poor Globular Cluster in the Galactic Bulge; IOP Publishing; Astrophysical Journal; 866; 10-2018; 12-23
0004-637X
1538-4357
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aadd06
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/aadd06
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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
_version_ 1844614455339515904
score 13.070432