A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ
- Autores
- Orsatti, Ana María; Vega, Ema Irene; Marraco, Hugo Gustavo
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present UBVRI polarimetric observations of stars belonging to the small open cluster Lyngå 6 and of TW Nor, a Cepheid which can be seen near the center of the grouping. The wavelength of maximum polarization is computed and then analyzed in the context of its relation to the optical properties and characteristics particle size distribution of the grains responsible for the polarization. The amount and direction of linear polarization is also computed. Results indicate a mean polarization efficiency close to the value found for the interstellar medium. Two out of seven members of Lyngå 6 present indications of intrinsic polarization in their measures. We conclude that part of the polarization detected in the light from members of the cluster comes from a dust cloud located in the Local arm, at a distance of about 1 kpc. In general, polarization measurements do not support the membership of TW Nor to Lyngå 6.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
Cepheids
ISM: dust, extinction
Open clusters and associations: individual (Lyngå 6)
Stars: individual (TW Nor) - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/83590
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A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW NormæOrsatti, Ana MaríaVega, Ema IreneMarraco, Hugo GustavoCiencias AstronómicasCepheidsISM: dust, extinctionOpen clusters and associations: individual (Lyngå 6)Stars: individual (TW Nor)We present UBVRI polarimetric observations of stars belonging to the small open cluster Lyngå 6 and of TW Nor, a Cepheid which can be seen near the center of the grouping. The wavelength of maximum polarization is computed and then analyzed in the context of its relation to the optical properties and characteristics particle size distribution of the grains responsible for the polarization. The amount and direction of linear polarization is also computed. Results indicate a mean polarization efficiency close to the value found for the interstellar medium. Two out of seven members of Lyngå 6 present indications of intrinsic polarization in their measures. We conclude that part of the polarization detected in the light from members of the cluster comes from a dust cloud located in the Local arm, at a distance of about 1 kpc. In general, polarization measurements do not support the membership of TW Nor to Lyngå 6.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf130-136http://sedici.unlp.edu.ar/handle/10915/83590enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20011350info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:50Zoai:sedici.unlp.edu.ar:10915/83590Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:50.999SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
title |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
spellingShingle |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ Orsatti, Ana María Ciencias Astronómicas Cepheids ISM: dust, extinction Open clusters and associations: individual (Lyngå 6) Stars: individual (TW Nor) |
title_short |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
title_full |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
title_fullStr |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
title_full_unstemmed |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
title_sort |
A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
dc.creator.none.fl_str_mv |
Orsatti, Ana María Vega, Ema Irene Marraco, Hugo Gustavo |
author |
Orsatti, Ana María |
author_facet |
Orsatti, Ana María Vega, Ema Irene Marraco, Hugo Gustavo |
author_role |
author |
author2 |
Vega, Ema Irene Marraco, Hugo Gustavo |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas Cepheids ISM: dust, extinction Open clusters and associations: individual (Lyngå 6) Stars: individual (TW Nor) |
topic |
Ciencias Astronómicas Cepheids ISM: dust, extinction Open clusters and associations: individual (Lyngå 6) Stars: individual (TW Nor) |
dc.description.none.fl_txt_mv |
We present UBVRI polarimetric observations of stars belonging to the small open cluster Lyngå 6 and of TW Nor, a Cepheid which can be seen near the center of the grouping. The wavelength of maximum polarization is computed and then analyzed in the context of its relation to the optical properties and characteristics particle size distribution of the grains responsible for the polarization. The amount and direction of linear polarization is also computed. Results indicate a mean polarization efficiency close to the value found for the interstellar medium. Two out of seven members of Lyngå 6 present indications of intrinsic polarization in their measures. We conclude that part of the polarization detected in the light from members of the cluster comes from a dust cloud located in the Local arm, at a distance of about 1 kpc. In general, polarization measurements do not support the membership of TW Nor to Lyngå 6. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata |
description |
We present UBVRI polarimetric observations of stars belonging to the small open cluster Lyngå 6 and of TW Nor, a Cepheid which can be seen near the center of the grouping. The wavelength of maximum polarization is computed and then analyzed in the context of its relation to the optical properties and characteristics particle size distribution of the grains responsible for the polarization. The amount and direction of linear polarization is also computed. Results indicate a mean polarization efficiency close to the value found for the interstellar medium. Two out of seven members of Lyngå 6 present indications of intrinsic polarization in their measures. We conclude that part of the polarization detected in the light from members of the cluster comes from a dust cloud located in the Local arm, at a distance of about 1 kpc. In general, polarization measurements do not support the membership of TW Nor to Lyngå 6. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/83590 |
url |
http://sedici.unlp.edu.ar/handle/10915/83590 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0004-6361 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20011350 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 130-136 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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SEDICI (UNLP) |
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Universidad Nacional de La Plata |
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UNLP |
repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
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