Artículos de revistas
Optical Polarization Observations of NGC 6231: Evidence for a Past Supernova Fingerprint
Fecha
2003-11Registro en:
Feinstein Baigorri, Carlos; Martínez, R. E.; Vergne, Maria Marcela; Baume, Gustavo Luis; Vazquez, Ruben Angel; Optical Polarization Observations of NGC 6231: Evidence for a Past Supernova Fingerprint; IOP Publishing; Astrophysical Journal; 598; 11-2003; 349-356
0004-637X
CONICET Digital
CONICET
Autor
Feinstein Baigorri, Carlos
Martínez, R. E.
Vergne, Maria Marcela
Baume, Gustavo Luis
Vazquez, Ruben Angel
Resumen
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.