The highly polarized open cluster Trumpler 27

We have carried out multicolor linear polarimetry (U BV RI) of the brightest stars in the area of the open cluster Trumpler 27. Our data show a high level of polarization in the stellar light with a considerable dispersion, from P = 4% to P = 9.5%. The polarization vectors of the cluster members app...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Feinstein Baigorri, Carlos, Baume, Gustavo Luis, Vázquez, Rubén Ángel, Niemelä, Virpi Sinikka, Cerruti, Miguel Ángel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (Trumpler 27)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84909
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84909
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (Trumpler 27)
spellingShingle Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (Trumpler 27)
Feinstein Baigorri, Carlos
Baume, Gustavo Luis
Vázquez, Rubén Ángel
Niemelä, Virpi Sinikka
Cerruti, Miguel Ángel
The highly polarized open cluster Trumpler 27
topic_facet Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (Trumpler 27)
description We have carried out multicolor linear polarimetry (U BV RI) of the brightest stars in the area of the open cluster Trumpler 27. Our data show a high level of polarization in the stellar light with a considerable dispersion, from P = 4% to P = 9.5%. The polarization vectors of the cluster members appear to be aligned. Foreground polarization was estimated from the data of some nonmember objects, for which two different components were resolved: the first one associated with a dust cloud close to the Sun producing P<SUB>λmax</SUB> = 1.3% and θ = 146°, and a second component, the main source of polarization for the cluster members, originating in another dust cloud, which polarizes the light in the direction of θ = 29°.5. From a detailed analysis, we found that the two components have associated values E<SUB>B-V</SUB> < 0.45 for the first one and E<SUB>B-V</SUB> > 0.75 for the other. Due the difference in the orientation of both polarization vectors, almost 90° (180° at the Stokes representation), the first cloud (θ ∼ 146°) depolarizes the light strongly polarized by the second one (θ ∼ 29°.5).
format Articulo
Articulo
author Feinstein Baigorri, Carlos
Baume, Gustavo Luis
Vázquez, Rubén Ángel
Niemelä, Virpi Sinikka
Cerruti, Miguel Ángel
author_facet Feinstein Baigorri, Carlos
Baume, Gustavo Luis
Vázquez, Rubén Ángel
Niemelä, Virpi Sinikka
Cerruti, Miguel Ángel
author_sort Feinstein Baigorri, Carlos
title The highly polarized open cluster Trumpler 27
title_short The highly polarized open cluster Trumpler 27
title_full The highly polarized open cluster Trumpler 27
title_fullStr The highly polarized open cluster Trumpler 27
title_full_unstemmed The highly polarized open cluster Trumpler 27
title_sort highly polarized open cluster trumpler 27
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/84909
work_keys_str_mv AT feinsteinbaigorricarlos thehighlypolarizedopenclustertrumpler27
AT baumegustavoluis thehighlypolarizedopenclustertrumpler27
AT vazquezrubenangel thehighlypolarizedopenclustertrumpler27
AT niemelavirpisinikka thehighlypolarizedopenclustertrumpler27
AT cerrutimiguelangel thehighlypolarizedopenclustertrumpler27
AT feinsteinbaigorricarlos highlypolarizedopenclustertrumpler27
AT baumegustavoluis highlypolarizedopenclustertrumpler27
AT vazquezrubenangel highlypolarizedopenclustertrumpler27
AT niemelavirpisinikka highlypolarizedopenclustertrumpler27
AT cerrutimiguelangel highlypolarizedopenclustertrumpler27
bdutipo_str Repositorios
_version_ 1764820488701345795

Ejemplares similares