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
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/102838
Ver los metadatos del registro completo
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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 Técnicas2025-10-22T12:14:57Zoai: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:34982025-10-22 12:14:57.866CONICET 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 |
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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 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
IOP Publishing |
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IOP Publishing |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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