The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud
- Autores
- Piatti, Andres Eduardo; Ivanov, Valentin D.; Rubele, Stefano; Marconi, Marcella; Ripepi, Vincenzo; Cioni, Maria Rosa L.; Oliveira, Joana M.; Bekki, Kenji
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We report the first search for new star clusters performed using the VISTA near-infrared YJKs Magellanic Clouds survey (VMC) data sets. We chose a pilot field of ∼0.4 deg2 located in the South-west of the Small Magelllanic Cloud bar, where the star field is among the densest and highest reddened region in the galaxy. In order to devise an appropriate automatic procedure we made use of dimensions and stellar densities observed in the VMC data sets of the known clusters in this area. We executed different kernel density estimations over a sample of more than 358 000 stars with magnitudes measured in the three YJKs filters. We analysed the new cluster candidates whose colour–magnitude diagrams (CMDs), cleaned from field star contamination, were used to assess the clusters’ reality and estimate reddenings and ages of the genuine systems. As a result 38 objects (≈ a 55 per cent increase in the known star clusters located in the surveyed field) of 0.15–0.40 arcmin (2.6–7.0 pc) in radius resulted to have near-infrared CMD features which resemble those of star clusters of young to moderate intermediate age (log(t yr−1) ∼7.5–9.0). Most of the new star cluster candidates are hardly recognizable in optical images without the help of a sound star field decontaminated CMD analysis. For highly reddened star cluster candidates (E(B − V) ≥ 0.6 mag) the VMC data sets were necessary in order to recognize them.
Fil: Piatti, Andres Eduardo. 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: Ivanov, Valentin D.. European Southern Observatory; Alemania
Fil: Rubele, Stefano. Osservatorio Astronomico di Padova; Italia. Università di Padova; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Marconi, Marcella. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Ripepi, Vincenzo. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Cioni, Maria Rosa L.. Universitat Potsdam; Alemania. University of Hertfordshire; Reino Unido
Fil: Oliveira, Joana M.. Keele University; Reino Unido
Fil: Bekki, Kenji. University of Western Australia; Australia - Materia
-
GALAXIES: INDIVIDUAL: SMC
MAGELLANIC CLOUDS
TECHNIQUES: PHOTOMETRIC - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/180869
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The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic CloudPiatti, Andres EduardoIvanov, Valentin D.Rubele, StefanoMarconi, MarcellaRipepi, VincenzoCioni, Maria Rosa L.Oliveira, Joana M.Bekki, KenjiGALAXIES: INDIVIDUAL: SMCMAGELLANIC CLOUDSTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We report the first search for new star clusters performed using the VISTA near-infrared YJKs Magellanic Clouds survey (VMC) data sets. We chose a pilot field of ∼0.4 deg2 located in the South-west of the Small Magelllanic Cloud bar, where the star field is among the densest and highest reddened region in the galaxy. In order to devise an appropriate automatic procedure we made use of dimensions and stellar densities observed in the VMC data sets of the known clusters in this area. We executed different kernel density estimations over a sample of more than 358 000 stars with magnitudes measured in the three YJKs filters. We analysed the new cluster candidates whose colour–magnitude diagrams (CMDs), cleaned from field star contamination, were used to assess the clusters’ reality and estimate reddenings and ages of the genuine systems. As a result 38 objects (≈ a 55 per cent increase in the known star clusters located in the surveyed field) of 0.15–0.40 arcmin (2.6–7.0 pc) in radius resulted to have near-infrared CMD features which resemble those of star clusters of young to moderate intermediate age (log(t yr−1) ∼7.5–9.0). Most of the new star cluster candidates are hardly recognizable in optical images without the help of a sound star field decontaminated CMD analysis. For highly reddened star cluster candidates (E(B − V) ≥ 0.6 mag) the VMC data sets were necessary in order to recognize them.Fil: Piatti, Andres Eduardo. 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: Ivanov, Valentin D.. European Southern Observatory; AlemaniaFil: Rubele, Stefano. Osservatorio Astronomico di Padova; Italia. Università di Padova; Italia. Istituto Nazionale di Astrofisica; ItaliaFil: Marconi, Marcella. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; ItaliaFil: Ripepi, Vincenzo. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; ItaliaFil: Cioni, Maria Rosa L.. Universitat Potsdam; Alemania. University of Hertfordshire; Reino UnidoFil: Oliveira, Joana M.. Keele University; Reino UnidoFil: Bekki, Kenji. University of Western Australia; AustraliaWiley Blackwell Publishing, Inc2016-07-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/180869Piatti, Andres Eduardo; Ivanov, Valentin D.; Rubele, Stefano; Marconi, Marcella; Ripepi, Vincenzo; et al.; The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 460; 1; 21-7-2016; 383-3950035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/460/1/383/2608792info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stw1000info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:25:43Zoai:ri.conicet.gov.ar:11336/180869instacron: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 10:25:44.025CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
title |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
spellingShingle |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud Piatti, Andres Eduardo GALAXIES: INDIVIDUAL: SMC MAGELLANIC CLOUDS TECHNIQUES: PHOTOMETRIC |
title_short |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
title_full |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
title_fullStr |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
title_full_unstemmed |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
title_sort |
The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud |
dc.creator.none.fl_str_mv |
Piatti, Andres Eduardo Ivanov, Valentin D. Rubele, Stefano Marconi, Marcella Ripepi, Vincenzo Cioni, Maria Rosa L. Oliveira, Joana M. Bekki, Kenji |
author |
Piatti, Andres Eduardo |
author_facet |
Piatti, Andres Eduardo Ivanov, Valentin D. Rubele, Stefano Marconi, Marcella Ripepi, Vincenzo Cioni, Maria Rosa L. Oliveira, Joana M. Bekki, Kenji |
author_role |
author |
author2 |
Ivanov, Valentin D. Rubele, Stefano Marconi, Marcella Ripepi, Vincenzo Cioni, Maria Rosa L. Oliveira, Joana M. Bekki, Kenji |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
GALAXIES: INDIVIDUAL: SMC MAGELLANIC CLOUDS TECHNIQUES: PHOTOMETRIC |
topic |
GALAXIES: INDIVIDUAL: SMC MAGELLANIC CLOUDS TECHNIQUES: PHOTOMETRIC |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.7 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We report the first search for new star clusters performed using the VISTA near-infrared YJKs Magellanic Clouds survey (VMC) data sets. We chose a pilot field of ∼0.4 deg2 located in the South-west of the Small Magelllanic Cloud bar, where the star field is among the densest and highest reddened region in the galaxy. In order to devise an appropriate automatic procedure we made use of dimensions and stellar densities observed in the VMC data sets of the known clusters in this area. We executed different kernel density estimations over a sample of more than 358 000 stars with magnitudes measured in the three YJKs filters. We analysed the new cluster candidates whose colour–magnitude diagrams (CMDs), cleaned from field star contamination, were used to assess the clusters’ reality and estimate reddenings and ages of the genuine systems. As a result 38 objects (≈ a 55 per cent increase in the known star clusters located in the surveyed field) of 0.15–0.40 arcmin (2.6–7.0 pc) in radius resulted to have near-infrared CMD features which resemble those of star clusters of young to moderate intermediate age (log(t yr−1) ∼7.5–9.0). Most of the new star cluster candidates are hardly recognizable in optical images without the help of a sound star field decontaminated CMD analysis. For highly reddened star cluster candidates (E(B − V) ≥ 0.6 mag) the VMC data sets were necessary in order to recognize them. Fil: Piatti, Andres Eduardo. 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: Ivanov, Valentin D.. European Southern Observatory; Alemania Fil: Rubele, Stefano. Osservatorio Astronomico di Padova; Italia. Università di Padova; Italia. Istituto Nazionale di Astrofisica; Italia Fil: Marconi, Marcella. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia Fil: Ripepi, Vincenzo. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia Fil: Cioni, Maria Rosa L.. Universitat Potsdam; Alemania. University of Hertfordshire; Reino Unido Fil: Oliveira, Joana M.. Keele University; Reino Unido Fil: Bekki, Kenji. University of Western Australia; Australia |
description |
We report the first search for new star clusters performed using the VISTA near-infrared YJKs Magellanic Clouds survey (VMC) data sets. We chose a pilot field of ∼0.4 deg2 located in the South-west of the Small Magelllanic Cloud bar, where the star field is among the densest and highest reddened region in the galaxy. In order to devise an appropriate automatic procedure we made use of dimensions and stellar densities observed in the VMC data sets of the known clusters in this area. We executed different kernel density estimations over a sample of more than 358 000 stars with magnitudes measured in the three YJKs filters. We analysed the new cluster candidates whose colour–magnitude diagrams (CMDs), cleaned from field star contamination, were used to assess the clusters’ reality and estimate reddenings and ages of the genuine systems. As a result 38 objects (≈ a 55 per cent increase in the known star clusters located in the surveyed field) of 0.15–0.40 arcmin (2.6–7.0 pc) in radius resulted to have near-infrared CMD features which resemble those of star clusters of young to moderate intermediate age (log(t yr−1) ∼7.5–9.0). Most of the new star cluster candidates are hardly recognizable in optical images without the help of a sound star field decontaminated CMD analysis. For highly reddened star cluster candidates (E(B − V) ≥ 0.6 mag) the VMC data sets were necessary in order to recognize them. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07-21 |
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/11336/180869 Piatti, Andres Eduardo; Ivanov, Valentin D.; Rubele, Stefano; Marconi, Marcella; Ripepi, Vincenzo; et al.; The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 460; 1; 21-7-2016; 383-395 0035-8711 1365-2966 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/180869 |
identifier_str_mv |
Piatti, Andres Eduardo; Ivanov, Valentin D.; Rubele, Stefano; Marconi, Marcella; Ripepi, Vincenzo; et al.; The VMC Survey - XXI. New star cluster candidates discovered from infrared photometry in the Small Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 460; 1; 21-7-2016; 383-395 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/url/https://academic.oup.com/mnras/article/460/1/383/2608792 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stw1000 |
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 |
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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1844614256486514688 |
score |
13.070432 |