Optical and near-infrared polarimetric study of the RCW121 galactic H II region

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dc.creatorJacqueline Carolina Serón Navarrete
dc.creatorAlexandre Roman Lopes
dc.creatorFábio Pereira Santos
dc.creatorGabriel Armando Pellegatti Franco
dc.creatorWilson Reis Junior
dc.date.accessioned2023-09-11T17:14:46Z
dc.date.accessioned2025-09-09T01:27:32Z
dc.date.available2023-09-11T17:14:46Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1093/mnras/stw1666
dc.identifier.issn1365-2966
dc.identifier.urihttps://hdl.handle.net/1843/58552
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsAcesso Aberto
dc.subjectPolarimetria
dc.subjectAstrofísica
dc.subjectMeio interestelar
dc.subjectPolarização (Luz)
dc.subject.otherStars
dc.subject.otherOptics
dc.subject.otherNear-infrared polarimetric study
dc.titleOptical and near-infrared polarimetric study of the RCW121 galactic H II region
dc.typeArtigo de periódico
local.citation.epage2274
local.citation.issue2
local.citation.spage2266
local.citation.volume462
local.description.resumoWe 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.
local.identifier.orcidhttps://orcid.org/0000-0002-1379-4204
local.identifier.orcidhttps://orcid.org/0000-0003-2020-2649
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://academic.oup.com/mnras/article/462/2/2266/2589405

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