NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration
- Autores
- Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Ahumada, Andrea Veronica
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We have obtained CCD photometry down to for the open cluster NGC 2309 and its surrounding field. Twenty three probable cluster members have been identified for the first time on the basis of sound photometric criteria. Because NGC 2309 is a relatively poor cluster projected onto a rich star field showing density fluctuations, the frequently used membership criteria based on stellar density profiles or proper motion measurements would not be enough to assess the star membership status if employed independently. We estimated a cluster radius of 7.9´ and a radius at half the maximum of the cluster density profile of 1.7´. Based on the best fits of isochrones computed by the Geneva group to the cluster color-magnitude and color-color diagrams, previously shifted by the cluster reddening (E(B-V)=0.32) and distance (d=2.5 kpc), we derived the cluster age (250 Myr) and metallicity ([Fe/H]=0.0). If an 8.5 kpc distance from the Sun to the center of the Galaxy is assumed, then NGC 2309 is found to be located just in front of the Perseus spiral arm.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Claria Olmedo, Juan Jose. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ahumada, Andrea Veronica. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Open Clusters
Ngc2309
Photometry - 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:11336/20262
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar ConcentrationPiatti, Andres EduardoClaria Olmedo, Juan JoseAhumada, Andrea VeronicaOpen ClustersNgc2309Photometryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have obtained CCD photometry down to for the open cluster NGC 2309 and its surrounding field. Twenty three probable cluster members have been identified for the first time on the basis of sound photometric criteria. Because NGC 2309 is a relatively poor cluster projected onto a rich star field showing density fluctuations, the frequently used membership criteria based on stellar density profiles or proper motion measurements would not be enough to assess the star membership status if employed independently. We estimated a cluster radius of 7.9´ and a radius at half the maximum of the cluster density profile of 1.7´. Based on the best fits of isochrones computed by the Geneva group to the cluster color-magnitude and color-color diagrams, previously shifted by the cluster reddening (E(B-V)=0.32) and distance (d=2.5 kpc), we derived the cluster age (250 Myr) and metallicity ([Fe/H]=0.0). If an 8.5 kpc distance from the Sun to the center of the Galaxy is assumed, then NGC 2309 is found to be located just in front of the Perseus spiral arm.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Claria Olmedo, Juan Jose. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ahumada, Andrea Veronica. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaUniversity of Chicago Press2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20262Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Ahumada, Andrea Veronica; NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration; University of Chicago Press; Publications of the Astronomical Society of the Pacific; 122; 889; 3-2010; 288-2980004-6280CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/651086info:eu-repo/semantics/altIdentifier/doi/10.1086/651086info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:44Zoai:ri.conicet.gov.ar:11336/20262instacron: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 10:37:45.075CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
title |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
spellingShingle |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration Piatti, Andres Eduardo Open Clusters Ngc2309 Photometry |
title_short |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
title_full |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
title_fullStr |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
title_full_unstemmed |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
title_sort |
NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration |
dc.creator.none.fl_str_mv |
Piatti, Andres Eduardo Claria Olmedo, Juan Jose Ahumada, Andrea Veronica |
author |
Piatti, Andres Eduardo |
author_facet |
Piatti, Andres Eduardo Claria Olmedo, Juan Jose Ahumada, Andrea Veronica |
author_role |
author |
author2 |
Claria Olmedo, Juan Jose Ahumada, Andrea Veronica |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Open Clusters Ngc2309 Photometry |
topic |
Open Clusters Ngc2309 Photometry |
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 have obtained CCD photometry down to for the open cluster NGC 2309 and its surrounding field. Twenty three probable cluster members have been identified for the first time on the basis of sound photometric criteria. Because NGC 2309 is a relatively poor cluster projected onto a rich star field showing density fluctuations, the frequently used membership criteria based on stellar density profiles or proper motion measurements would not be enough to assess the star membership status if employed independently. We estimated a cluster radius of 7.9´ and a radius at half the maximum of the cluster density profile of 1.7´. Based on the best fits of isochrones computed by the Geneva group to the cluster color-magnitude and color-color diagrams, previously shifted by the cluster reddening (E(B-V)=0.32) and distance (d=2.5 kpc), we derived the cluster age (250 Myr) and metallicity ([Fe/H]=0.0). If an 8.5 kpc distance from the Sun to the center of the Galaxy is assumed, then NGC 2309 is found to be located just in front of the Perseus spiral arm. Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina Fil: Claria Olmedo, Juan Jose. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Ahumada, Andrea Veronica. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
We have obtained CCD photometry down to for the open cluster NGC 2309 and its surrounding field. Twenty three probable cluster members have been identified for the first time on the basis of sound photometric criteria. Because NGC 2309 is a relatively poor cluster projected onto a rich star field showing density fluctuations, the frequently used membership criteria based on stellar density profiles or proper motion measurements would not be enough to assess the star membership status if employed independently. We estimated a cluster radius of 7.9´ and a radius at half the maximum of the cluster density profile of 1.7´. Based on the best fits of isochrones computed by the Geneva group to the cluster color-magnitude and color-color diagrams, previously shifted by the cluster reddening (E(B-V)=0.32) and distance (d=2.5 kpc), we derived the cluster age (250 Myr) and metallicity ([Fe/H]=0.0). If an 8.5 kpc distance from the Sun to the center of the Galaxy is assumed, then NGC 2309 is found to be located just in front of the Perseus spiral arm. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-03 |
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/11336/20262 Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Ahumada, Andrea Veronica; NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration; University of Chicago Press; Publications of the Astronomical Society of the Pacific; 122; 889; 3-2010; 288-298 0004-6280 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/20262 |
identifier_str_mv |
Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Ahumada, Andrea Veronica; NGC 2309: A Relatively Young Open Cluster Projected onto a Random Stellar Concentration; University of Chicago Press; Publications of the Astronomical Society of the Pacific; 122; 889; 3-2010; 288-298 0004-6280 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/651086 info:eu-repo/semantics/altIdentifier/doi/10.1086/651086 |
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 application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
University of Chicago Press |
publisher.none.fl_str_mv |
University of Chicago Press |
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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1844614398414422016 |
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13.070432 |