VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk
- Autores
- Garro, E. R.; Minniti, D.; Gómez, M.; García Alonso, José; Barbá, Rodolfo; Barbuy, B.; Clariá, Juan José; Chené, A. N.; Dias, Bruno; Hempel, M.; Ivanov, V. D.; Lucas, P. W.; Majaess, D.; Mauro, F.; Moni Bidin, C.; Palma, Tali; Pullen, J. B.; Saito, R. K.; Smith, L.; Surot, F.; Ramírez Alegría, S.; Rejkuba, M.; Ripepi, V.; Fernández Trincado, J.
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Context. Milky Way globular clusters (GCs) are difficult to identify at low Galactic latitudes because of high differential extinction and heavy star crowding. The new deep near-infrared (IR) images and photometry from the VISTA Variables in the Via Láctea Extended Survey (VVVX) allow us to chart previously unexplored regions. Aims. Our long term aim is to complete the census of Milky Way GCs. The immediate goals are to estimate the astrophysical parameters for the newly discovered GC candidates, measuring their reddenings, extinctions, distances, total luminosities, proper motions, sizes, metallicities, and ages. Methods. We used the near-IR VVVX survey database, in combination with the optical photometry and proper motions (PMs) from Gaia Data Release 2 (DR2), and with the Two Micron All Sky Survey photometry to search for and characterise new GCs within the southern Galactic plane (|b| < 5°). Results. We report the detection of a heretofore unknown Galactic GC at RA = 14:09:00.0; Dec =-65:37:12 (J2000) corresponding to l = 310.828 deg; and b =-3.944 deg in galactic coordinates. We calculate a reddening of E(J-Ks) = (0.3 ± 0.03) mag and an extinction of AKs = (0.15 ± 0.01) mag for this new GC. Its distance modulus and corresponding distance were measured as (m-M) = (15.93 ± 0.03) mag and D = (15.5 ± 1.0) kpc, respectively. We also estimate the metallicity and age by comparison with known GCs and by fitting PARSEC and Dartmouth isochrones, finding [Fe/H] = (-0.70 ± 0.2) dex and t = (11.0 ± 1.0) Gyr. The mean GC PMs from Gaia DR2 are μα∗ = (-4.68 ± 0.47) mas yr-1 and μδ = (-1.34 ± 0.45) mas yr-1. The total luminosity of our cluster is estimated to be MKs = (-7.76 ± 0.5) mag. The core and tidal radii from the radial density profile are rc ∼ 2.1′ (4.6 pc) and rt = 6.5′ (14.6 pc) at the cluster distance. Conclusions. We have found a new low luminosity, old and metal-rich GC, situated in the far side of the Galactic disk at RG = 11.2 kpc from the Galactic centre and at z = 1.0 kpc below the plane. Interestingly, the location, metallicity, and age of this GC are coincident with the Monoceros ring structure.
Fil: Garro, E. R.. Universidad Andrés Bello; Chile
Fil: Minniti, D.. Universidad Andrés Bello; Chile. Vatican Observatory; Italia
Fil: Gómez, M.. Universidad Andrés Bello; Chile
Fil: García Alonso, José. Universidad de Antofagasta; Chile. Millennium Institute of Astrophysics; Chile
Fil: Barbá, Rodolfo. Universidad de La Serena; Chile
Fil: Barbuy, B.. Universidade de Sao Paulo; Brasil
Fil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Chené, A. N.. Observatorio Gemini; Chile
Fil: Dias, Bruno. Universidad de Tarapaca. Instituto de Alta Investigacion.; Chile
Fil: Hempel, M.. Universidad Andrés Bello; Chile
Fil: Ivanov, V. D.. European Southern Observatory; Alemania
Fil: Lucas, P. W.. University of Hertfordshire; Reino Unido
Fil: Majaess, D.. Mount Saint Vincent University; Canadá. Saint Mary's University. School of Environmental Studies; Canadá
Fil: Mauro, F.. Universidad Católica del Norte; Chile
Fil: Moni Bidin, C.. Universidad Católica del Norte; Chile
Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Pullen, J. B.. Universidad Andrés Bello; Chile
Fil: Saito, R. K.. Universidade Federal de Santa Catarina; Brasil
Fil: Smith, L.. University of Cambridge; Reino Unido
Fil: Surot, F.. Instituto de Astrofísica de Canarias; España
Fil: Ramírez Alegría, S.. Universidad de Antofagasta; Chile
Fil: Rejkuba, M.. University of Hertfordshire; Reino Unido
Fil: Ripepi, V.. Osservatorio Astronomico Di Capodimonte; Italia
Fil: Fernández Trincado, J.. Universidad de Atacama.; Chile - Materia
-
GALAXY: DISK
GALAXY: STELLAR CONTENT
GLOBULAR CLUSTERS: GENERAL
INFRARED: STARS
SURVEYS - 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:11336/144839
Ver los metadatos del registro completo
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VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way diskGarro, E. R.Minniti, D.Gómez, M.García Alonso, JoséBarbá, RodolfoBarbuy, B.Clariá, Juan JoséChené, A. N.Dias, BrunoHempel, M.Ivanov, V. D.Lucas, P. W.Majaess, D.Mauro, F.Moni Bidin, C.Palma, TaliPullen, J. B.Saito, R. K.Smith, L.Surot, F.Ramírez Alegría, S.Rejkuba, M.Ripepi, V.Fernández Trincado, J.GALAXY: DISKGALAXY: STELLAR CONTENTGLOBULAR CLUSTERS: GENERALINFRARED: STARSSURVEYShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. Milky Way globular clusters (GCs) are difficult to identify at low Galactic latitudes because of high differential extinction and heavy star crowding. The new deep near-infrared (IR) images and photometry from the VISTA Variables in the Via Láctea Extended Survey (VVVX) allow us to chart previously unexplored regions. Aims. Our long term aim is to complete the census of Milky Way GCs. The immediate goals are to estimate the astrophysical parameters for the newly discovered GC candidates, measuring their reddenings, extinctions, distances, total luminosities, proper motions, sizes, metallicities, and ages. Methods. We used the near-IR VVVX survey database, in combination with the optical photometry and proper motions (PMs) from Gaia Data Release 2 (DR2), and with the Two Micron All Sky Survey photometry to search for and characterise new GCs within the southern Galactic plane (|b| < 5°). Results. We report the detection of a heretofore unknown Galactic GC at RA = 14:09:00.0; Dec =-65:37:12 (J2000) corresponding to l = 310.828 deg; and b =-3.944 deg in galactic coordinates. We calculate a reddening of E(J-Ks) = (0.3 ± 0.03) mag and an extinction of AKs = (0.15 ± 0.01) mag for this new GC. Its distance modulus and corresponding distance were measured as (m-M) = (15.93 ± 0.03) mag and D = (15.5 ± 1.0) kpc, respectively. We also estimate the metallicity and age by comparison with known GCs and by fitting PARSEC and Dartmouth isochrones, finding [Fe/H] = (-0.70 ± 0.2) dex and t = (11.0 ± 1.0) Gyr. The mean GC PMs from Gaia DR2 are μα∗ = (-4.68 ± 0.47) mas yr-1 and μδ = (-1.34 ± 0.45) mas yr-1. The total luminosity of our cluster is estimated to be MKs = (-7.76 ± 0.5) mag. The core and tidal radii from the radial density profile are rc ∼ 2.1′ (4.6 pc) and rt = 6.5′ (14.6 pc) at the cluster distance. Conclusions. We have found a new low luminosity, old and metal-rich GC, situated in the far side of the Galactic disk at RG = 11.2 kpc from the Galactic centre and at z = 1.0 kpc below the plane. Interestingly, the location, metallicity, and age of this GC are coincident with the Monoceros ring structure.Fil: Garro, E. R.. Universidad Andrés Bello; ChileFil: Minniti, D.. Universidad Andrés Bello; Chile. Vatican Observatory; ItaliaFil: Gómez, M.. Universidad Andrés Bello; ChileFil: García Alonso, José. Universidad de Antofagasta; Chile. Millennium Institute of Astrophysics; ChileFil: Barbá, Rodolfo. Universidad de La Serena; ChileFil: Barbuy, B.. Universidade de Sao Paulo; BrasilFil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Chené, A. N.. Observatorio Gemini; ChileFil: Dias, Bruno. Universidad de Tarapaca. Instituto de Alta Investigacion.; ChileFil: Hempel, M.. Universidad Andrés Bello; ChileFil: Ivanov, V. D.. European Southern Observatory; AlemaniaFil: Lucas, P. W.. University of Hertfordshire; Reino UnidoFil: Majaess, D.. Mount Saint Vincent University; Canadá. Saint Mary's University. School of Environmental Studies; CanadáFil: Mauro, F.. Universidad Católica del Norte; ChileFil: Moni Bidin, C.. Universidad Católica del Norte; ChileFil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Pullen, J. B.. Universidad Andrés Bello; ChileFil: Saito, R. K.. Universidade Federal de Santa Catarina; BrasilFil: Smith, L.. University of Cambridge; Reino UnidoFil: Surot, F.. Instituto de Astrofísica de Canarias; EspañaFil: Ramírez Alegría, S.. Universidad de Antofagasta; ChileFil: Rejkuba, M.. University of Hertfordshire; Reino UnidoFil: Ripepi, V.. Osservatorio Astronomico Di Capodimonte; ItaliaFil: Fernández Trincado, J.. Universidad de Atacama.; ChileEDP Sciences2020-10info: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/11336/144839Garro, E. R.; Minniti, D.; Gómez, M.; García Alonso, José; Barbá, Rodolfo; et al.; VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk; EDP Sciences; Astronomy and Astrophysics; 642; 10-2020; 1-80004-63611432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2020/10/aa39233-20/aa39233-20.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202039233info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:41:05Zoai:ri.conicet.gov.ar:11336/144839instacron: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 09:41:05.893CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| title |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| spellingShingle |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk Garro, E. R. GALAXY: DISK GALAXY: STELLAR CONTENT GLOBULAR CLUSTERS: GENERAL INFRARED: STARS SURVEYS |
| title_short |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| title_full |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| title_fullStr |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| title_full_unstemmed |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| title_sort |
VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk |
| dc.creator.none.fl_str_mv |
Garro, E. R. Minniti, D. Gómez, M. García Alonso, José Barbá, Rodolfo Barbuy, B. Clariá, Juan José Chené, A. N. Dias, Bruno Hempel, M. Ivanov, V. D. Lucas, P. W. Majaess, D. Mauro, F. Moni Bidin, C. Palma, Tali Pullen, J. B. Saito, R. K. Smith, L. Surot, F. Ramírez Alegría, S. Rejkuba, M. Ripepi, V. Fernández Trincado, J. |
| author |
Garro, E. R. |
| author_facet |
Garro, E. R. Minniti, D. Gómez, M. García Alonso, José Barbá, Rodolfo Barbuy, B. Clariá, Juan José Chené, A. N. Dias, Bruno Hempel, M. Ivanov, V. D. Lucas, P. W. Majaess, D. Mauro, F. Moni Bidin, C. Palma, Tali Pullen, J. B. Saito, R. K. Smith, L. Surot, F. Ramírez Alegría, S. Rejkuba, M. Ripepi, V. Fernández Trincado, J. |
| author_role |
author |
| author2 |
Minniti, D. Gómez, M. García Alonso, José Barbá, Rodolfo Barbuy, B. Clariá, Juan José Chené, A. N. Dias, Bruno Hempel, M. Ivanov, V. D. Lucas, P. W. Majaess, D. Mauro, F. Moni Bidin, C. Palma, Tali Pullen, J. B. Saito, R. K. Smith, L. Surot, F. Ramírez Alegría, S. Rejkuba, M. Ripepi, V. Fernández Trincado, J. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
GALAXY: DISK GALAXY: STELLAR CONTENT GLOBULAR CLUSTERS: GENERAL INFRARED: STARS SURVEYS |
| topic |
GALAXY: DISK GALAXY: STELLAR CONTENT GLOBULAR CLUSTERS: GENERAL INFRARED: STARS SURVEYS |
| 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. Milky Way globular clusters (GCs) are difficult to identify at low Galactic latitudes because of high differential extinction and heavy star crowding. The new deep near-infrared (IR) images and photometry from the VISTA Variables in the Via Láctea Extended Survey (VVVX) allow us to chart previously unexplored regions. Aims. Our long term aim is to complete the census of Milky Way GCs. The immediate goals are to estimate the astrophysical parameters for the newly discovered GC candidates, measuring their reddenings, extinctions, distances, total luminosities, proper motions, sizes, metallicities, and ages. Methods. We used the near-IR VVVX survey database, in combination with the optical photometry and proper motions (PMs) from Gaia Data Release 2 (DR2), and with the Two Micron All Sky Survey photometry to search for and characterise new GCs within the southern Galactic plane (|b| < 5°). Results. We report the detection of a heretofore unknown Galactic GC at RA = 14:09:00.0; Dec =-65:37:12 (J2000) corresponding to l = 310.828 deg; and b =-3.944 deg in galactic coordinates. We calculate a reddening of E(J-Ks) = (0.3 ± 0.03) mag and an extinction of AKs = (0.15 ± 0.01) mag for this new GC. Its distance modulus and corresponding distance were measured as (m-M) = (15.93 ± 0.03) mag and D = (15.5 ± 1.0) kpc, respectively. We also estimate the metallicity and age by comparison with known GCs and by fitting PARSEC and Dartmouth isochrones, finding [Fe/H] = (-0.70 ± 0.2) dex and t = (11.0 ± 1.0) Gyr. The mean GC PMs from Gaia DR2 are μα∗ = (-4.68 ± 0.47) mas yr-1 and μδ = (-1.34 ± 0.45) mas yr-1. The total luminosity of our cluster is estimated to be MKs = (-7.76 ± 0.5) mag. The core and tidal radii from the radial density profile are rc ∼ 2.1′ (4.6 pc) and rt = 6.5′ (14.6 pc) at the cluster distance. Conclusions. We have found a new low luminosity, old and metal-rich GC, situated in the far side of the Galactic disk at RG = 11.2 kpc from the Galactic centre and at z = 1.0 kpc below the plane. Interestingly, the location, metallicity, and age of this GC are coincident with the Monoceros ring structure. Fil: Garro, E. R.. Universidad Andrés Bello; Chile Fil: Minniti, D.. Universidad Andrés Bello; Chile. Vatican Observatory; Italia Fil: Gómez, M.. Universidad Andrés Bello; Chile Fil: García Alonso, José. Universidad de Antofagasta; Chile. Millennium Institute of Astrophysics; Chile Fil: Barbá, Rodolfo. Universidad de La Serena; Chile Fil: Barbuy, B.. Universidade de Sao Paulo; Brasil Fil: Clariá, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina Fil: Chené, A. N.. Observatorio Gemini; Chile Fil: Dias, Bruno. Universidad de Tarapaca. Instituto de Alta Investigacion.; Chile Fil: Hempel, M.. Universidad Andrés Bello; Chile Fil: Ivanov, V. D.. European Southern Observatory; Alemania Fil: Lucas, P. W.. University of Hertfordshire; Reino Unido Fil: Majaess, D.. Mount Saint Vincent University; Canadá. Saint Mary's University. School of Environmental Studies; Canadá Fil: Mauro, F.. Universidad Católica del Norte; Chile Fil: Moni Bidin, C.. Universidad Católica del Norte; Chile Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina Fil: Pullen, J. B.. Universidad Andrés Bello; Chile Fil: Saito, R. K.. Universidade Federal de Santa Catarina; Brasil Fil: Smith, L.. University of Cambridge; Reino Unido Fil: Surot, F.. Instituto de Astrofísica de Canarias; España Fil: Ramírez Alegría, S.. Universidad de Antofagasta; Chile Fil: Rejkuba, M.. University of Hertfordshire; Reino Unido Fil: Ripepi, V.. Osservatorio Astronomico Di Capodimonte; Italia Fil: Fernández Trincado, J.. Universidad de Atacama.; Chile |
| description |
Context. Milky Way globular clusters (GCs) are difficult to identify at low Galactic latitudes because of high differential extinction and heavy star crowding. The new deep near-infrared (IR) images and photometry from the VISTA Variables in the Via Láctea Extended Survey (VVVX) allow us to chart previously unexplored regions. Aims. Our long term aim is to complete the census of Milky Way GCs. The immediate goals are to estimate the astrophysical parameters for the newly discovered GC candidates, measuring their reddenings, extinctions, distances, total luminosities, proper motions, sizes, metallicities, and ages. Methods. We used the near-IR VVVX survey database, in combination with the optical photometry and proper motions (PMs) from Gaia Data Release 2 (DR2), and with the Two Micron All Sky Survey photometry to search for and characterise new GCs within the southern Galactic plane (|b| < 5°). Results. We report the detection of a heretofore unknown Galactic GC at RA = 14:09:00.0; Dec =-65:37:12 (J2000) corresponding to l = 310.828 deg; and b =-3.944 deg in galactic coordinates. We calculate a reddening of E(J-Ks) = (0.3 ± 0.03) mag and an extinction of AKs = (0.15 ± 0.01) mag for this new GC. Its distance modulus and corresponding distance were measured as (m-M) = (15.93 ± 0.03) mag and D = (15.5 ± 1.0) kpc, respectively. We also estimate the metallicity and age by comparison with known GCs and by fitting PARSEC and Dartmouth isochrones, finding [Fe/H] = (-0.70 ± 0.2) dex and t = (11.0 ± 1.0) Gyr. The mean GC PMs from Gaia DR2 are μα∗ = (-4.68 ± 0.47) mas yr-1 and μδ = (-1.34 ± 0.45) mas yr-1. The total luminosity of our cluster is estimated to be MKs = (-7.76 ± 0.5) mag. The core and tidal radii from the radial density profile are rc ∼ 2.1′ (4.6 pc) and rt = 6.5′ (14.6 pc) at the cluster distance. Conclusions. We have found a new low luminosity, old and metal-rich GC, situated in the far side of the Galactic disk at RG = 11.2 kpc from the Galactic centre and at z = 1.0 kpc below the plane. Interestingly, the location, metallicity, and age of this GC are coincident with the Monoceros ring structure. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020-10 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/144839 Garro, E. R.; Minniti, D.; Gómez, M.; García Alonso, José; Barbá, Rodolfo; et al.; VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk; EDP Sciences; Astronomy and Astrophysics; 642; 10-2020; 1-8 0004-6361 1432-0746 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/144839 |
| identifier_str_mv |
Garro, E. R.; Minniti, D.; Gómez, M.; García Alonso, José; Barbá, Rodolfo; et al.; VVVX-Gaia discovery of a low luminosity globular cluster in the Milky Way disk; EDP Sciences; Astronomy and Astrophysics; 642; 10-2020; 1-8 0004-6361 1432-0746 CONICET Digital CONICET |
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eng |
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eng |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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