Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars

Autores: Chené, A. N.; Borissova, J.; Bonatto, C.; Majaess, D. J.; Baume, Gustavo Luis; Clarke, J. R. A.; Kurtev, R.; Schnurr, O.; Bouret, J. C.; Catelan, M.; Emerson, J. P.; Feinstein Baigorri, Carlos; Geisler, D.; de Grijs, R.; Hervé, A.; Ivanov, V. D.; Kumar, M. S. N.; Lucas, P.; Mahy, L.; Martins, F.; Mauro, F.; Minniti, Dante; Moni Bidin, C.
Año de publicación: 2013
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: Context. The ESO Public Survey “VISTA Variables in the Vía Láctea” (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Nearly 150 new open clusters and cluster candidates have been discovered in this survey. Aims. This is the second in a series of papers about young, massive open clusters observed using the VVV survey. We present the first study of six recently discovered clusters. These clusters contain at least one newly discovered Wolf-Rayet (WR) star. Methods. Following the methodology presented in the first paper of the series, wide-field, deep JHKs VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters for a subset of clusters. Results. We find that the six studied stellar groups are real young (2–7 Myr) and massive (between 0.8 and 2.2 × 103 M) clusters. They are highly obscured (AV ∼ 5−24 mag) and compact (1–2 pc). In addition to WR stars, two of the six clusters also contain at least one red supergiant star, and one of these two clusters also contains a blue supergiant. We claim the discovery of 8 new WR stars, and 3 stars showing WR-like emission lines which could be classified WR or OIf. Preliminary analysis provides initial masses of ∼30–50 M for the WR stars. Finally, we discuss the spiral structure of the Galaxy using the six new clusters as tracers, together with the previously studied VVV clusters.
Fil: Chené, A. N.. Universidad de Valparaíso; Chile
Fil: Borissova, J.. Universidad de Valparaíso; Chile
Fil: Bonatto, C.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Majaess, D. J.. Saint Mary’s University; Canadá
Fil: Baume, Gustavo Luis. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Clarke, J. R. A.. Universidad de Valparaíso; Chile
Fil: Kurtev, R.. Universidad de Valparaíso; Chile
Fil: Schnurr, O.. Leibniz Institut für Astrophysik Potsdam; Alemania
Fil: Bouret, J. C.. Laboratoire d’Astrophysique de Marseille; Francia
Fil: Catelan, M.. The Milky Way Millennium Nucleus; Chile
Fil: Emerson, J. P.. Queen Mary University of London; Reino Unido
Fil: Feinstein Baigorri, Carlos. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica la Plata; Argentina
Fil: Geisler, D.. Universidad de Concepción; Chile
Fil: de Grijs, R.. Peking University; China
Fil: Hervé, A.. Universite de Liege; Bélgica
Fil: Ivanov, V. D.. European Southern Observatory; Chile
Fil: Kumar, M. S. N.. Centro de Astrofisica da Universidade do Porto; Portugal
Fil: Lucas, P.. University Of Hertfordshire; Reino Unido
Fil: Mahy, L.. Peking University; China
Fil: Martins, F.. Universite Montpellier II; Francia
Fil: Mauro, F.. Universidad de Concepción; Chile
Fil: Minniti, Dante. The Milky Way Millennium Nucleus; Chile
Fil: Moni Bidin, C.. Universidad de Concepción; Chile
Materia: Open clusters
Infrared stars
Asscociations
Wolf rayet stars
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:11336/18554

Acceder

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repository_id_str	3498
network_name_str	CONICET Digital (CONICET)
spelling	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet starsChené, A. N.Borissova, J.Bonatto, C.Majaess, D. J.Baume, Gustavo LuisClarke, J. R. A.Kurtev, R.Schnurr, O.Bouret, J. C.Catelan, M.Emerson, J. P.Feinstein Baigorri, CarlosGeisler, D.de Grijs, R.Hervé, A.Ivanov, V. D.Kumar, M. S. N.Lucas, P.Mahy, L.Martins, F.Mauro, F.Minniti, DanteMoni Bidin, C.Open clustersInfrared starsAsscociationsWolf rayet starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. The ESO Public Survey “VISTA Variables in the Vía Láctea” (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Nearly 150 new open clusters and cluster candidates have been discovered in this survey. Aims. This is the second in a series of papers about young, massive open clusters observed using the VVV survey. We present the first study of six recently discovered clusters. These clusters contain at least one newly discovered Wolf-Rayet (WR) star. Methods. Following the methodology presented in the first paper of the series, wide-field, deep JHKs VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters for a subset of clusters. Results. We find that the six studied stellar groups are real young (2–7 Myr) and massive (between 0.8 and 2.2 × 103 M) clusters. They are highly obscured (AV ∼ 5−24 mag) and compact (1–2 pc). In addition to WR stars, two of the six clusters also contain at least one red supergiant star, and one of these two clusters also contains a blue supergiant. We claim the discovery of 8 new WR stars, and 3 stars showing WR-like emission lines which could be classified WR or OIf. Preliminary analysis provides initial masses of ∼30–50 M for the WR stars. Finally, we discuss the spiral structure of the Galaxy using the six new clusters as tracers, together with the previously studied VVV clusters.Fil: Chené, A. N.. Universidad de Valparaíso; ChileFil: Borissova, J.. Universidad de Valparaíso; ChileFil: Bonatto, C.. Universidade Federal do Rio Grande do Sul; BrasilFil: Majaess, D. J.. Saint Mary’s University; CanadáFil: Baume, Gustavo Luis. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Clarke, J. R. A.. Universidad de Valparaíso; ChileFil: Kurtev, R.. Universidad de Valparaíso; ChileFil: Schnurr, O.. Leibniz Institut für Astrophysik Potsdam; AlemaniaFil: Bouret, J. C.. Laboratoire d’Astrophysique de Marseille; FranciaFil: Catelan, M.. The Milky Way Millennium Nucleus; ChileFil: Emerson, J. P.. Queen Mary University of London; Reino UnidoFil: Feinstein Baigorri, Carlos. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica la Plata; ArgentinaFil: Geisler, D.. Universidad de Concepción; ChileFil: de Grijs, R.. Peking University; ChinaFil: Hervé, A.. Universite de Liege; BélgicaFil: Ivanov, V. D.. European Southern Observatory; ChileFil: Kumar, M. S. N.. Centro de Astrofisica da Universidade do Porto; PortugalFil: Lucas, P.. University Of Hertfordshire; Reino UnidoFil: Mahy, L.. Peking University; ChinaFil: Martins, F.. Universite Montpellier II; FranciaFil: Mauro, F.. Universidad de Concepción; ChileFil: Minniti, Dante. The Milky Way Millennium Nucleus; ChileFil: Moni Bidin, C.. Universidad de Concepción; ChileEdp Sciences S A2013-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18554Chené, A. N.; Borissova, J.; Bonatto, C.; Majaess, D. J.; Baume, Gustavo Luis; et al.; Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars; Edp Sciences S A; Astronomy And Astrophysics; 549; 98; 3-2013; 1-170004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220107info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2013/01/aa20107-12/aa20107-12.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:17:56Zoai:ri.conicet.gov.ar:11336/18554instacron: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:34982025-10-15 15:17:56.497CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
title	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
spellingShingle	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars Chené, A. N. Open clusters Infrared stars Asscociations Wolf rayet stars
title_short	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
title_full	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
title_fullStr	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
title_full_unstemmed	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
title_sort	Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars
dc.creator.none.fl_str_mv	Chené, A. N. Borissova, J. Bonatto, C. Majaess, D. J. Baume, Gustavo Luis Clarke, J. R. A. Kurtev, R. Schnurr, O. Bouret, J. C. Catelan, M. Emerson, J. P. Feinstein Baigorri, Carlos Geisler, D. de Grijs, R. Hervé, A. Ivanov, V. D. Kumar, M. S. N. Lucas, P. Mahy, L. Martins, F. Mauro, F. Minniti, Dante Moni Bidin, C.
author	Chené, A. N.
author_facet	Chené, A. N. Borissova, J. Bonatto, C. Majaess, D. J. Baume, Gustavo Luis Clarke, J. R. A. Kurtev, R. Schnurr, O. Bouret, J. C. Catelan, M. Emerson, J. P. Feinstein Baigorri, Carlos Geisler, D. de Grijs, R. Hervé, A. Ivanov, V. D. Kumar, M. S. N. Lucas, P. Mahy, L. Martins, F. Mauro, F. Minniti, Dante Moni Bidin, C.
author_role	author
author2	Borissova, J. Bonatto, C. Majaess, D. J. Baume, Gustavo Luis Clarke, J. R. A. Kurtev, R. Schnurr, O. Bouret, J. C. Catelan, M. Emerson, J. P. Feinstein Baigorri, Carlos Geisler, D. de Grijs, R. Hervé, A. Ivanov, V. D. Kumar, M. S. N. Lucas, P. Mahy, L. Martins, F. Mauro, F. Minniti, Dante Moni Bidin, C.
author2_role	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	Open clusters Infrared stars Asscociations Wolf rayet stars
topic	Open clusters Infrared stars Asscociations Wolf rayet stars
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. The ESO Public Survey “VISTA Variables in the Vía Láctea” (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Nearly 150 new open clusters and cluster candidates have been discovered in this survey. Aims. This is the second in a series of papers about young, massive open clusters observed using the VVV survey. We present the first study of six recently discovered clusters. These clusters contain at least one newly discovered Wolf-Rayet (WR) star. Methods. Following the methodology presented in the first paper of the series, wide-field, deep JHKs VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters for a subset of clusters. Results. We find that the six studied stellar groups are real young (2–7 Myr) and massive (between 0.8 and 2.2 × 103 M) clusters. They are highly obscured (AV ∼ 5−24 mag) and compact (1–2 pc). In addition to WR stars, two of the six clusters also contain at least one red supergiant star, and one of these two clusters also contains a blue supergiant. We claim the discovery of 8 new WR stars, and 3 stars showing WR-like emission lines which could be classified WR or OIf. Preliminary analysis provides initial masses of ∼30–50 M for the WR stars. Finally, we discuss the spiral structure of the Galaxy using the six new clusters as tracers, together with the previously studied VVV clusters. Fil: Chené, A. N.. Universidad de Valparaíso; Chile Fil: Borissova, J.. Universidad de Valparaíso; Chile Fil: Bonatto, C.. Universidade Federal do Rio Grande do Sul; Brasil Fil: Majaess, D. J.. Saint Mary’s University; Canadá Fil: Baume, Gustavo Luis. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Clarke, J. R. A.. Universidad de Valparaíso; Chile Fil: Kurtev, R.. Universidad de Valparaíso; Chile Fil: Schnurr, O.. Leibniz Institut für Astrophysik Potsdam; Alemania Fil: Bouret, J. C.. Laboratoire d’Astrophysique de Marseille; Francia Fil: Catelan, M.. The Milky Way Millennium Nucleus; Chile Fil: Emerson, J. P.. Queen Mary University of London; Reino Unido Fil: Feinstein Baigorri, Carlos. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica la Plata; Argentina Fil: Geisler, D.. Universidad de Concepción; Chile Fil: de Grijs, R.. Peking University; China Fil: Hervé, A.. Universite de Liege; Bélgica Fil: Ivanov, V. D.. European Southern Observatory; Chile Fil: Kumar, M. S. N.. Centro de Astrofisica da Universidade do Porto; Portugal Fil: Lucas, P.. University Of Hertfordshire; Reino Unido Fil: Mahy, L.. Peking University; China Fil: Martins, F.. Universite Montpellier II; Francia Fil: Mauro, F.. Universidad de Concepción; Chile Fil: Minniti, Dante. The Milky Way Millennium Nucleus; Chile Fil: Moni Bidin, C.. Universidad de Concepción; Chile
description	Context. The ESO Public Survey “VISTA Variables in the Vía Láctea” (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Nearly 150 new open clusters and cluster candidates have been discovered in this survey. Aims. This is the second in a series of papers about young, massive open clusters observed using the VVV survey. We present the first study of six recently discovered clusters. These clusters contain at least one newly discovered Wolf-Rayet (WR) star. Methods. Following the methodology presented in the first paper of the series, wide-field, deep JHKs VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters for a subset of clusters. Results. We find that the six studied stellar groups are real young (2–7 Myr) and massive (between 0.8 and 2.2 × 103 M) clusters. They are highly obscured (AV ∼ 5−24 mag) and compact (1–2 pc). In addition to WR stars, two of the six clusters also contain at least one red supergiant star, and one of these two clusters also contains a blue supergiant. We claim the discovery of 8 new WR stars, and 3 stars showing WR-like emission lines which could be classified WR or OIf. Preliminary analysis provides initial masses of ∼30–50 M for the WR stars. Finally, we discuss the spiral structure of the Galaxy using the six new clusters as tracers, together with the previously studied VVV clusters.
publishDate	2013
dc.date.none.fl_str_mv	2013-03
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/11336/18554 Chené, A. N.; Borissova, J.; Bonatto, C.; Majaess, D. J.; Baume, Gustavo Luis; et al.; Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars; Edp Sciences S A; Astronomy And Astrophysics; 549; 98; 3-2013; 1-17 0004-6361 CONICET Digital CONICET
url	http://hdl.handle.net/11336/18554
identifier_str_mv	Chené, A. N.; Borissova, J.; Bonatto, C.; Majaess, D. J.; Baume, Gustavo Luis; et al.; Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars; Edp Sciences S A; Astronomy And Astrophysics; 549; 98; 3-2013; 1-17 0004-6361 CONICET Digital CONICET
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201220107 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2013/01/aa20107-12/aa20107-12.html
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	Edp Sciences S A
publisher.none.fl_str_mv	Edp Sciences S A
dc.source.none.fl_str_mv	reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str	CONICET Digital (CONICET)
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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	13.22299

Massive open star clusters using the VVV survey: II discovery of six clusters with Wolf-Rayet stars

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