1. Repositório Institucional da UFMG
2. Publicações Científicas e Culturais
3. Artigo de Periódico

Type:	Artigo de Periódico
Title:	Optical and near-infrared polarimetric study of the RCW121 galactic H II region
Authors:	Jacqueline Carolina Serón Navarrete Alexandre Roman Lopes Fábio Pereira Santos Gabriel Armando Pellegatti Franco Wilson Reis Junior
Abstract:	We present a polarimetric study of the RCW121 star-forming region to derive the orientation of the sky-projected magnetic field component traced by the polarization vectors, the morphology of which tends to follow the cloud's structure. Individual polarization-angle values are consistent across the different bands, having a broad distribution towards the RCW121 H II region. We estimate the corresponding magnetic field orientation in the H II region to have a mean value of −12° ± 7°. RCW121 shows an elongated shape in the same direction as the magnetic field orientation, which may be evidence that magnetic pressure opposes the H II region expansion. Serkowski's relation was used to determine individual values of the total-to-selective extinction ratio (RV) distribution and a weighted mean value of RV = 3.17 ± 0.05. We derive a foreground component of the polarization degree that is consistent with the literature value for this Galactic region.
Subject:	Polarimetria Astrofísica Meio interestelar Polarização (Luz)
language:	eng
metadata.dc.publisher.country:	Brasil
Publisher:	Universidade Federal de Minas Gerais
Publisher Initials:	UFMG
metadata.dc.publisher.department:	ICX - DEPARTAMENTO DE FÍSICA
Rights:	Acesso Aberto
metadata.dc.identifier.doi:	https://doi.org/10.1093/mnras/stw1666
URI:	http://hdl.handle.net/1843/58552
Issue Date:	2016
metadata.dc.url.externa:	https://academic.oup.com/mnras/article/462/2/2266/2589405
metadata.dc.relation.ispartof:	Monthly Notices of the Royal Astronomical Society
Appears in Collections:	Artigo de Periódico

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.