Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint

We present the first linear multicolor polarization observations for a sample of 35 stars in the direction of the Galactic cluster NGC 6231. We have found a complex pattern in the angles of the polarimetric vectors. Near the core of this cluster the structure shows a semicircular pattern that we hav...

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Detalles Bibliográficos
Autores principales: Feinstein Baigorri, Carlos, Martínez, Rubén Enrique, Vergne, María Marcela, Baume, Gustavo Luis, Vázquez, Rubén Ángel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (NGC 6231)
Polarization
Supernova remnants
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84494
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84494
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 (NGC 6231)
Polarization
Supernova remnants
spellingShingle Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (NGC 6231)
Polarization
Supernova remnants
Feinstein Baigorri, Carlos
Martínez, Rubén Enrique
Vergne, María Marcela
Baume, Gustavo Luis
Vázquez, Rubén Ángel
Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint
topic_facet Ciencias Astronómicas
Dust, extinction
Open clusters and associations: individual (NGC 6231)
Polarization
Supernova remnants
description We present the first linear multicolor polarization observations for a sample of 35 stars in the direction of the Galactic cluster NGC 6231. We have found a complex pattern in the angles of the polarimetric vectors. Near the core of this cluster the structure shows a semicircular pattern that we have interpreted as a reorientation of the dust particles showing the morphology of the magnetic field. We propose that a supernova event occurred some time ago and produced a shock on the local ISM. We discuss in this paper independent confirmations of this event, both from the studies on the diffuse interstellar absorptions and the results of the pre-main-sequence stars. We also show that a supernova is supported by the evolutionary status of the cluster.
format Articulo
Articulo
author Feinstein Baigorri, Carlos
Martínez, Rubén Enrique
Vergne, María Marcela
Baume, Gustavo Luis
Vázquez, Rubén Ángel
author_facet Feinstein Baigorri, Carlos
Martínez, Rubén Enrique
Vergne, María Marcela
Baume, Gustavo Luis
Vázquez, Rubén Ángel
author_sort Feinstein Baigorri, Carlos
title Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint
title_short Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint
title_full Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint
title_fullStr Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint
title_full_unstemmed Optical polarization observations of NGC 6231: Evidence for a past supernova fingerprint
title_sort optical polarization observations of ngc 6231: evidence for a past supernova fingerprint
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/84494
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bdutipo_str Repositorios
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