Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506

Detalhes bibliográficos
Autor(a) principal: Fábio Pereira Santos
Data de Publicação: 2016
Outros Autores: Gemma Busquet Rico, Gabriel Armando Pellegatti Franco, Josep Miquel Girart, Qizhou Zhang
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFMG
Texto Completo: https://doi.org/10.3847/0004-637X/832/2/186
http://hdl.handle.net/1843/58549
https://orcid.org/0000-0002-9650-3619
https://orcid.org/0000-0002-2189-6278
https://orcid.org/0000-0002-3829-5591
https://orcid.org/0000-0003-2384-6589
Resumo: CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
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spelling 2023-09-11T15:50:57Z2023-09-11T15:50:57Z20168322115https://doi.org/10.3847/0004-637X/832/2/1861538-4357http://hdl.handle.net/1843/58549https://orcid.org/0000-0002-9650-3619https://orcid.org/0000-0002-2189-6278https://orcid.org/0000-0002-3829-5591https://orcid.org/0000-0003-2384-6589CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThe infrared dark cloud G14.225-0.506 (IRDC G14.2) displays a remarkable complex of parallel dense molecular filaments projected on the plane of the sky. Previous studies of dust emission and molecular lines have speculated whether magnetic fields could have played an important role in the formation of such elongated structures, which are hosts to numerous young stellar sources. In this work we have conducted a vast polarimetric survey at optical and near-infrared wavelengths in order to study the morphology of magnetic field lines in IRDC G14.2 through the observation of background stars. The orientation of interstellar polarization, which traces magnetic field lines, is perpendicular to most of the filamentary features within the cloud. Additionally, the larger-scale molecular cloud as a whole exhibits an elongated shape also perpendicular to magnetic fields. Estimates of magnetic field strengths indicate values in the range 320–550 μG, which allow sub-alfvénic conditions, but do not prevent the gravitational collapse of hub–filament structures, which in general are close to the critical state. These characteristics suggest that magnetic fields played the main role in regulating the collapse from large to small scales, leading to the formation of series of parallel elongated structures. The morphology is also consistent with numerical simulations that show how gravitational instabilities develop when subjected to strong magnetic fields. Finally, the results corroborate the hypothesis that strong support from internal magnetic fields might explain why the cloud seems to be contracting on a timescale 2–3 times longer than what is expected from a free-fall collapse.engUniversidade Federal de Minas GeraisUFMGBrasilICX - DEPARTAMENTO DE FÍSICAThe Astrophysical JournalCampos magnéticosPolarimetriaMeio interestelarStarsMagnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://iopscience.iop.org/article/10.3847/0004-637X/832/2/186Fábio Pereira SantosGemma Busquet RicoGabriel Armando Pellegatti FrancoJosep Miquel GirartQizhou Zhangapplication/pdfinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/58549/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALMAGNETICALLY DOMINATED PARALLEL INTERSTELLAR FILAMENTS IN THE INFRARED DARK.pdfMAGNETICALLY DOMINATED PARALLEL INTERSTELLAR FILAMENTS IN THE INFRARED DARK.pdfapplication/pdf3687741https://repositorio.ufmg.br/bitstream/1843/58549/2/MAGNETICALLY%20DOMINATED%20PARALLEL%20INTERSTELLAR%20FILAMENTS%20IN%20THE%20INFRARED%20DARK.pdfdc277ae168d6e5e066e1b7a60fb9ccbbMD521843/585492023-09-11 18:46:28.128oai:repositorio.ufmg.br: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Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-09-11T21:46:28Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false
dc.title.pt_BR.fl_str_mv Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
title Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
spellingShingle Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
Fábio Pereira Santos
Stars
Campos magnéticos
Polarimetria
Meio interestelar
title_short Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
title_full Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
title_fullStr Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
title_full_unstemmed Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
title_sort Magnetically dominated parallel interstellar filaments in the infrared dark cloud G14.225-0.506
author Fábio Pereira Santos
author_facet Fábio Pereira Santos
Gemma Busquet Rico
Gabriel Armando Pellegatti Franco
Josep Miquel Girart
Qizhou Zhang
author_role author
author2 Gemma Busquet Rico
Gabriel Armando Pellegatti Franco
Josep Miquel Girart
Qizhou Zhang
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Fábio Pereira Santos
Gemma Busquet Rico
Gabriel Armando Pellegatti Franco
Josep Miquel Girart
Qizhou Zhang
dc.subject.por.fl_str_mv Stars
topic Stars
Campos magnéticos
Polarimetria
Meio interestelar
dc.subject.other.pt_BR.fl_str_mv Campos magnéticos
Polarimetria
Meio interestelar
description CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
publishDate 2016
dc.date.issued.fl_str_mv 2016
dc.date.accessioned.fl_str_mv 2023-09-11T15:50:57Z
dc.date.available.fl_str_mv 2023-09-11T15:50:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1843/58549
dc.identifier.doi.pt_BR.fl_str_mv https://doi.org/10.3847/0004-637X/832/2/186
dc.identifier.issn.pt_BR.fl_str_mv 1538-4357
dc.identifier.orcid.pt_BR.fl_str_mv https://orcid.org/0000-0002-9650-3619
https://orcid.org/0000-0002-2189-6278
https://orcid.org/0000-0002-3829-5591
https://orcid.org/0000-0003-2384-6589
url https://doi.org/10.3847/0004-637X/832/2/186
http://hdl.handle.net/1843/58549
https://orcid.org/0000-0002-9650-3619
https://orcid.org/0000-0002-2189-6278
https://orcid.org/0000-0002-3829-5591
https://orcid.org/0000-0003-2384-6589
identifier_str_mv 1538-4357
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.none.fl_str_mv The Astrophysical Journal
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Minas Gerais
dc.publisher.initials.fl_str_mv UFMG
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv ICX - DEPARTAMENTO DE FÍSICA
publisher.none.fl_str_mv Universidade Federal de Minas Gerais
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFMG
instname:Universidade Federal de Minas Gerais (UFMG)
instacron:UFMG
instname_str Universidade Federal de Minas Gerais (UFMG)
instacron_str UFMG
institution UFMG
reponame_str Repositório Institucional da UFMG
collection Repositório Institucional da UFMG
bitstream.url.fl_str_mv https://repositorio.ufmg.br/bitstream/1843/58549/1/License.txt
https://repositorio.ufmg.br/bitstream/1843/58549/2/MAGNETICALLY%20DOMINATED%20PARALLEL%20INTERSTELLAR%20FILAMENTS%20IN%20THE%20INFRARED%20DARK.pdf
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