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dc.contributor.authorSoam, Archana
dc.contributor.authorPattle, Kate
dc.contributor.authorWard-Thompson, Derek
dc.contributor.authorLee, Chang Won
dc.contributor.authorSadavoy, Sarah
dc.contributor.authorKoch, Patrick M.
dc.contributor.authorKim, Gwanjeong
dc.contributor.authorKwon, Jungmi
dc.contributor.authorKwon, Woojin
dc.contributor.authorArzoumanian, Doris
dc.contributor.authorBerry, David
dc.contributor.authorHoang, Thiem
dc.contributor.authorTamura, Motohide
dc.contributor.authorLee, Sang-Sung
dc.contributor.authorLiu, Tie
dc.contributor.authorKim, Kee-Tae
dc.contributor.authorJohnstone, Doug
dc.contributor.authorNakamura, Fumitaka
dc.contributor.authorLyo, A-Ran
dc.contributor.authorOnaka, Takashi
dc.contributor.authorKim, Jongsoo
dc.contributor.authorFuruya, Ray S.
dc.contributor.authorHasegawa, Tetsuo
dc.contributor.authorLai, Shih-Ping
dc.contributor.authorBastien, Pierre
dc.contributor.authorChung, Eun Jung
dc.contributor.authorKim, Shinyoung
dc.contributor.authorParsons, Harriet
dc.contributor.authorRawlings, Mark
dc.contributor.authorMairs, Steve
dc.contributor.authorGraves, Sarah F.
dc.contributor.authorRobitaille, J. -F.
dc.contributor.authorLiu, Hong-Li
dc.contributor.authorWhitworth, Anthony P.
dc.contributor.authorEswaraiah, Chakali
dc.contributor.authorRao, Ramprasad
dc.contributor.authorYoo, Hyunju
dc.contributor.authorHoude, Martin
dc.contributor.authorKang, Ji-hyun
dc.contributor.authorDoi, Yasuo
dc.contributor.authorChoi, Minho
dc.contributor.authorKang, Miju
dc.contributor.authorCoude, Simon
dc.contributor.authorLi, Hua-bai
dc.contributor.authorMatsumura, Masafumi
dc.contributor.authorMatthews, Brenda C.
dc.contributor.authorPon, Andy
dc.contributor.authorFrancesco, James Di
dc.contributor.authorHayashi, Saeko S.
dc.contributor.authorChrysostomou, Antonio
dc.contributor.authorGledhill, Timothy
dc.date.accessioned2018-07-31T12:33:19Z
dc.date.available2018-07-31T12:33:19Z
dc.date.issued2018-07-01
dc.identifier.citationBISTRO & Gledhill , T 2018 , ' Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements ' , The Astrophysical Journal , vol. 861 , no. 1 , 65 . https://doi.org/10.3847/1538-4357/aac4a6
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 14910213
dc.identifier.otherPURE UUID: 3578e962-8259-4fd0-828a-45243922a545
dc.identifier.otherArXiv: http://arxiv.org/abs/1805.06131v2
dc.identifier.otherScopus: 85049927027
dc.identifier.otherORCID: /0000-0002-2859-4600/work/54896472
dc.identifier.urihttp://hdl.handle.net/2299/20305
dc.description© 2018 The American Astronomical Society. All rights reserved. 17 pages, 10 figures, Accepted for publication in ApJ
dc.description.abstractWe present the results of dust emission polarization measurements of Ophiuchus-B (Oph-B) carried out using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) camera with its associated polarimeter (POL-2) on the James Clerk Maxwell Telescope in Hawaii. This work is part of the B-fields in Star-forming Region Observations survey initiated to understand the role of magnetic fields in star formation for nearby star-forming molecular clouds. We present a first look at the geometry and strength of magnetic fields in Oph-B. The field geometry is traced over ∼0.2 pc, with clear detection of both of the sub-clumps of Oph-B. The field pattern appears significantly disordered in sub-clump Oph-B1. The field geometry in Oph-B2 is more ordered, with a tendency to be along the major axis of the clump, parallel to the filamentary structure within which it lies. The degree of polarization decreases systematically toward the dense core material in the two sub-clumps. The field lines in the lower density material along the periphery are smoothly joined to the large-scale magnetic fields probed by NIR polarization observations. We estimated a magnetic field strength of 630 ± 410 μG in the Oph-B2 sub-clump using a Davis-Chandrasekhar-Fermi analysis. With this magnetic field strength, we find a mass-to-flux ratio λ = 1.6 ± 1.1, which suggests that the Oph-B2 clump is slightly magnetically supercritical.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rightsEmbargoed
dc.subjectISM: individual objects (Ophiuchus)
dc.subjectISM: structure
dc.subjectpolarization
dc.subjectradio continuum: ISM
dc.subjectstars: formation
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleMagnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurementsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.date.embargoedUntil2019-07-03
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85049927027&partnerID=8YFLogxK
dc.identifier.urlhttps://arxiv.org/abs/1805.06131
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2018-07-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/aac4a6
rioxxterms.licenseref.uriOther
rioxxterms.licenseref.startdate2019-07-03
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.date.embargo2019-07-03
herts.rights.accesstypeEmbargoed


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