Optical multicolor polarization observations in the region of the open cluster NGC 5749

Autores
Vergne, Maria Marcela; Feinstein Baigorri, Carlos; Martinez, Ruben Enrique
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present (UBVRI) multicolor linear polarimetric data for 31 of the brightest stars in the area of the open cluster NGC 5749 considered to study the properties of the interstellar medium (ISM) towards the cluster. Our data yield a mean polarization percentage of PV ∼ 1.7%, close to the polarization value produced by the ISM with normal efficiency (P(%) = 3.5E(B−V) 0.8 ) for a mean color excess of EB−V = 0.42. The mean angle of polarization vectors, θ = 74◦, agrees quite well with the expected angle produced by dust particles aligned in the direction of the galactic disk (and the magnetic field) in the region. Our analysis indicates that the visual absorption affecting the stars in NGC 5749 is partially produced by a dust layer located up to 300 pc from the Sun and also by a second layer of dust closer to the cluster (located at least at 700 pc). The observed photometry and our polarization data are consistent with the existence of dust within the cluster. We also show in this work how polarimetry could be an excellent technique for identifying nonmember stars.
Fil: Vergne, Maria Marcela. 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: 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: Martinez, Ruben Enrique. 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
Materia
Open clusters
Interstellar medium
Polarimetry
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:11336/44582
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Optical multicolor polarization observations in the region of the open cluster NGC 5749Vergne, Maria MarcelaFeinstein Baigorri, CarlosMartinez, Ruben EnriqueOpen clustersInterstellar mediumPolarimetryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present (UBVRI) multicolor linear polarimetric data for 31 of the brightest stars in the area of the open cluster NGC 5749 considered to study the properties of the interstellar medium (ISM) towards the cluster. Our data yield a mean polarization percentage of PV ∼ 1.7%, close to the polarization value produced by the ISM with normal efficiency (P(%) = 3.5E(B−V) 0.8 ) for a mean color excess of EB−V = 0.42. The mean angle of polarization vectors, θ = 74◦, agrees quite well with the expected angle produced by dust particles aligned in the direction of the galactic disk (and the magnetic field) in the region. Our analysis indicates that the visual absorption affecting the stars in NGC 5749 is partially produced by a dust layer located up to 300 pc from the Sun and also by a second layer of dust closer to the cluster (located at least at 700 pc). The observed photometry and our polarization data are consistent with the existence of dust within the cluster. We also show in this work how polarimetry could be an excellent technique for identifying nonmember stars.Fil: Vergne, Maria Marcela. 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: 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: Martinez, Ruben Enrique. 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; ArgentinaEDP Sciences2007-12info: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/11336/44582Vergne, Maria Marcela; Feinstein Baigorri, Carlos; Martinez, Ruben Enrique; Optical multicolor polarization observations in the region of the open cluster NGC 5749; EDP Sciences; Astronomy and Astrophysics; 462; 12-2007; 621-6260004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/ 10.1051/0004-6361:20042124info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2007/05/aa2124-04/aa2124-04.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 Técnicas2025-10-22T12:13:10Zoai:ri.conicet.gov.ar:11336/44582instacron: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 12:13:10.705CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Optical multicolor polarization observations in the region of the open cluster NGC 5749
title Optical multicolor polarization observations in the region of the open cluster NGC 5749
spellingShingle Optical multicolor polarization observations in the region of the open cluster NGC 5749
Vergne, Maria Marcela
Open clusters
Interstellar medium
Polarimetry
title_short Optical multicolor polarization observations in the region of the open cluster NGC 5749
title_full Optical multicolor polarization observations in the region of the open cluster NGC 5749
title_fullStr Optical multicolor polarization observations in the region of the open cluster NGC 5749
title_full_unstemmed Optical multicolor polarization observations in the region of the open cluster NGC 5749
title_sort Optical multicolor polarization observations in the region of the open cluster NGC 5749
dc.creator.none.fl_str_mv Vergne, Maria Marcela
Feinstein Baigorri, Carlos
Martinez, Ruben Enrique
author Vergne, Maria Marcela
author_facet Vergne, Maria Marcela
Feinstein Baigorri, Carlos
Martinez, Ruben Enrique
author_role author
author2 Feinstein Baigorri, Carlos
Martinez, Ruben Enrique
author2_role author
author
dc.subject.none.fl_str_mv Open clusters
Interstellar medium
Polarimetry
topic Open clusters
Interstellar medium
Polarimetry
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 (UBVRI) multicolor linear polarimetric data for 31 of the brightest stars in the area of the open cluster NGC 5749 considered to study the properties of the interstellar medium (ISM) towards the cluster. Our data yield a mean polarization percentage of PV ∼ 1.7%, close to the polarization value produced by the ISM with normal efficiency (P(%) = 3.5E(B−V) 0.8 ) for a mean color excess of EB−V = 0.42. The mean angle of polarization vectors, θ = 74◦, agrees quite well with the expected angle produced by dust particles aligned in the direction of the galactic disk (and the magnetic field) in the region. Our analysis indicates that the visual absorption affecting the stars in NGC 5749 is partially produced by a dust layer located up to 300 pc from the Sun and also by a second layer of dust closer to the cluster (located at least at 700 pc). The observed photometry and our polarization data are consistent with the existence of dust within the cluster. We also show in this work how polarimetry could be an excellent technique for identifying nonmember stars.
Fil: Vergne, Maria Marcela. 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: 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: Martinez, Ruben Enrique. 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
description We present (UBVRI) multicolor linear polarimetric data for 31 of the brightest stars in the area of the open cluster NGC 5749 considered to study the properties of the interstellar medium (ISM) towards the cluster. Our data yield a mean polarization percentage of PV ∼ 1.7%, close to the polarization value produced by the ISM with normal efficiency (P(%) = 3.5E(B−V) 0.8 ) for a mean color excess of EB−V = 0.42. The mean angle of polarization vectors, θ = 74◦, agrees quite well with the expected angle produced by dust particles aligned in the direction of the galactic disk (and the magnetic field) in the region. Our analysis indicates that the visual absorption affecting the stars in NGC 5749 is partially produced by a dust layer located up to 300 pc from the Sun and also by a second layer of dust closer to the cluster (located at least at 700 pc). The observed photometry and our polarization data are consistent with the existence of dust within the cluster. We also show in this work how polarimetry could be an excellent technique for identifying nonmember stars.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
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/11336/44582
Vergne, Maria Marcela; Feinstein Baigorri, Carlos; Martinez, Ruben Enrique; Optical multicolor polarization observations in the region of the open cluster NGC 5749; EDP Sciences; Astronomy and Astrophysics; 462; 12-2007; 621-626
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44582
identifier_str_mv Vergne, Maria Marcela; Feinstein Baigorri, Carlos; Martinez, Ruben Enrique; Optical multicolor polarization observations in the region of the open cluster NGC 5749; EDP Sciences; Astronomy and Astrophysics; 462; 12-2007; 621-626
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/ 10.1051/0004-6361:20042124
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2007/05/aa2124-04/aa2124-04.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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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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