CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant

Autores
Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Parisi, Maria Celeste; Ahumada, Andrea Veronica
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present CCD photometry in the Washington system C and T1 passbands down to T1 ~ 19.5 mag in the fields of Czernik 26, Czernik 30, and Haffner 11, three poorly studied open clusters located in the third Galactic quadrant. We measured T1 magnitudes and C-T1 colors for a total of 6472 stars distributed throughout cluster areas of 13.6´ x 13.6´ each. Cluster radii were estimated from star counts in appropriate-sized boxes distributed throughout the entire observed fields. Based on the best fits of isochrones computed by the Padova group to the (C-T_1,T_1) color-magnitude diagrams (CMDs), we  derived color excesses, heliocentric distances and ages for the three clusters. These are characterized by a relatively small angular size and by a high field star contamination. We performed a firm analysis of  the field star contamination of the CMDs and examined different relationships between the position in the
Galaxy of known open clusters located within 1 kpc around the three studied ones, their age and their interstellar  visual absorption. We confirm previous results in the sense that the closer the cluster birthplace to the Galactic plane, the higher the interstellar visual absorption. We also found that the space velocity dispersion perpendicular to the Galactic plane diminishes as the clusters are younger.  The positions, interstellar visual absorptions,
ages, and metallicities of the three studied clusters favor the hypothesis that they were not born in the recently discovered Canis Major (CMa) dwarf galaxy before it was accreted by the Milky Way.
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: Parisi, Maria Celeste. 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
Galaxy: Open Clusters And Associations: General
Galaxy: Open Clusters And Associations: Individual (Czernik 26, Czernik 30, Haffner 11)
Techniques: Photometric
Galaxies: Dwarf
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21899
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21899
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrantPiatti, Andres EduardoClaria Olmedo, Juan JoseParisi, Maria CelesteAhumada, Andrea VeronicaGalaxy: Open Clusters And Associations: GeneralGalaxy: Open Clusters And Associations: Individual (Czernik 26, Czernik 30, Haffner 11)Techniques: PhotometricGalaxies: Dwarfhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present CCD photometry in the Washington system C and T1 passbands down to T1 ~ 19.5 mag in the fields of Czernik 26, Czernik 30, and Haffner 11, three poorly studied open clusters located in the third Galactic quadrant. We measured T1 magnitudes and C-T1 colors for a total of 6472 stars distributed throughout cluster areas of 13.6´ x 13.6´ each. Cluster radii were estimated from star counts in appropriate-sized boxes distributed throughout the entire observed fields. Based on the best fits of isochrones computed by the Padova group to the (C-T_1,T_1) color-magnitude diagrams (CMDs), we  derived color excesses, heliocentric distances and ages for the three clusters. These are characterized by a relatively small angular size and by a high field star contamination. We performed a firm analysis of  the field star contamination of the CMDs and examined different relationships between the position in the <br />Galaxy of known open clusters located within 1 kpc around the three studied ones, their age and their interstellar  visual absorption. We confirm previous results in the sense that the closer the cluster birthplace to the Galactic plane, the higher the interstellar visual absorption. We also found that the space velocity dispersion perpendicular to the Galactic plane diminishes as the clusters are younger.  The positions, interstellar visual absorptions,<br />ages, and metallicities of the three studied clusters favor the hypothesis that they were not born in the recently discovered Canis Major (CMa) dwarf galaxy before it was accreted by the Milky Way.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: Parisi, Maria Celeste. 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; ArgentinaElsevier Science2009-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21899Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Parisi, Maria Celeste; Ahumada, Andrea Veronica; CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant; Elsevier Science; New Astronomy; 14; 1; 1-2009; 97-1081384-1076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.newast.2008.05.006info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1384107608000717info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:29:22Zoai:ri.conicet.gov.ar:11336/21899instacron: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 11:29:22.872CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
title CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
spellingShingle CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
Piatti, Andres Eduardo
Galaxy: Open Clusters And Associations: General
Galaxy: Open Clusters And Associations: Individual (Czernik 26, Czernik 30, Haffner 11)
Techniques: Photometric
Galaxies: Dwarf
title_short CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
title_full CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
title_fullStr CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
title_full_unstemmed CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
title_sort CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
Claria Olmedo, Juan Jose
Parisi, Maria Celeste
Ahumada, Andrea Veronica
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
Claria Olmedo, Juan Jose
Parisi, Maria Celeste
Ahumada, Andrea Veronica
author_role author
author2 Claria Olmedo, Juan Jose
Parisi, Maria Celeste
Ahumada, Andrea Veronica
author2_role author
author
author
dc.subject.none.fl_str_mv Galaxy: Open Clusters And Associations: General
Galaxy: Open Clusters And Associations: Individual (Czernik 26, Czernik 30, Haffner 11)
Techniques: Photometric
Galaxies: Dwarf
topic Galaxy: Open Clusters And Associations: General
Galaxy: Open Clusters And Associations: Individual (Czernik 26, Czernik 30, Haffner 11)
Techniques: Photometric
Galaxies: Dwarf
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 present CCD photometry in the Washington system C and T1 passbands down to T1 ~ 19.5 mag in the fields of Czernik 26, Czernik 30, and Haffner 11, three poorly studied open clusters located in the third Galactic quadrant. We measured T1 magnitudes and C-T1 colors for a total of 6472 stars distributed throughout cluster areas of 13.6´ x 13.6´ each. Cluster radii were estimated from star counts in appropriate-sized boxes distributed throughout the entire observed fields. Based on the best fits of isochrones computed by the Padova group to the (C-T_1,T_1) color-magnitude diagrams (CMDs), we  derived color excesses, heliocentric distances and ages for the three clusters. These are characterized by a relatively small angular size and by a high field star contamination. We performed a firm analysis of  the field star contamination of the CMDs and examined different relationships between the position in the <br />Galaxy of known open clusters located within 1 kpc around the three studied ones, their age and their interstellar  visual absorption. We confirm previous results in the sense that the closer the cluster birthplace to the Galactic plane, the higher the interstellar visual absorption. We also found that the space velocity dispersion perpendicular to the Galactic plane diminishes as the clusters are younger.  The positions, interstellar visual absorptions,<br />ages, and metallicities of the three studied clusters favor the hypothesis that they were not born in the recently discovered Canis Major (CMa) dwarf galaxy before it was accreted by the Milky Way.
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: Parisi, Maria Celeste. 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 present CCD photometry in the Washington system C and T1 passbands down to T1 ~ 19.5 mag in the fields of Czernik 26, Czernik 30, and Haffner 11, three poorly studied open clusters located in the third Galactic quadrant. We measured T1 magnitudes and C-T1 colors for a total of 6472 stars distributed throughout cluster areas of 13.6´ x 13.6´ each. Cluster radii were estimated from star counts in appropriate-sized boxes distributed throughout the entire observed fields. Based on the best fits of isochrones computed by the Padova group to the (C-T_1,T_1) color-magnitude diagrams (CMDs), we  derived color excesses, heliocentric distances and ages for the three clusters. These are characterized by a relatively small angular size and by a high field star contamination. We performed a firm analysis of  the field star contamination of the CMDs and examined different relationships between the position in the <br />Galaxy of known open clusters located within 1 kpc around the three studied ones, their age and their interstellar  visual absorption. We confirm previous results in the sense that the closer the cluster birthplace to the Galactic plane, the higher the interstellar visual absorption. We also found that the space velocity dispersion perpendicular to the Galactic plane diminishes as the clusters are younger.  The positions, interstellar visual absorptions,<br />ages, and metallicities of the three studied clusters favor the hypothesis that they were not born in the recently discovered Canis Major (CMa) dwarf galaxy before it was accreted by the Milky Way.
publishDate 2009
dc.date.none.fl_str_mv 2009-01
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/11336/21899
Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Parisi, Maria Celeste; Ahumada, Andrea Veronica; CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant; Elsevier Science; New Astronomy; 14; 1; 1-2009; 97-108
1384-1076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21899
identifier_str_mv Piatti, Andres Eduardo; Claria Olmedo, Juan Jose; Parisi, Maria Celeste; Ahumada, Andrea Veronica; CCD Washington photometry of three highly field star contaminated open clusters in the third Galactic quadrant; Elsevier Science; New Astronomy; 14; 1; 1-2009; 97-108
1384-1076
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.newast.2008.05.006
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1384107608000717
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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score 12.982451

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