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dc.contributor.authorCoudé, Simon
dc.contributor.authorBastien, Pierre
dc.contributor.authorHoude, Martin
dc.contributor.authorSadavoy, Sarah
dc.contributor.authorFriesen, Rachel
dc.contributor.authorFrancesco, James Di
dc.contributor.authorJohnstone, Doug
dc.contributor.authorMairs, Steve
dc.contributor.authorHasegawa, Tetsuo
dc.contributor.authorKwon, Woojin
dc.contributor.authorLai, Shih-Ping
dc.contributor.authorQiu, Keping
dc.contributor.authorWard-Thompson, Derek
dc.contributor.authorBerry, David
dc.contributor.authorChen, Michael Chun-Yuan
dc.contributor.authorFiege, Jason
dc.contributor.authorFranzmann, Erica
dc.contributor.authorHatchell, Jennifer
dc.contributor.authorLacaille, Kevin
dc.contributor.authorMatthews, Brenda C.
dc.contributor.authorMoriarty-Schieven, Gerald H.
dc.contributor.authorPon, Andy
dc.contributor.authorAndré, Philippe
dc.contributor.authorArzoumanian, Doris
dc.contributor.authorAso, Yusuke
dc.contributor.authorByun, Do-Young
dc.contributor.authorChakali, Eswaraiah
dc.contributor.authorChen, Huei-Ru
dc.contributor.authorChen, Wen Ping
dc.contributor.authorChing, Tao-Chung
dc.contributor.authorCho, Jungyeon
dc.contributor.authorChoi, Minho
dc.contributor.authorChrysostomou, Antonio
dc.contributor.authorChung, Eun Jung
dc.contributor.authorDoi, Yasuo
dc.contributor.authorDrabek-Maunder, Emily
dc.contributor.authorDowell, C. Darren
dc.contributor.authorEyres, Stewart P. S.
dc.contributor.authorFalle, Sam
dc.contributor.authorFriberg, Per
dc.contributor.authorFuller, Gary
dc.contributor.authorFuruya, Ray S.
dc.contributor.authorGledhill, Tim
dc.contributor.authorGraves, Sarah F.
dc.contributor.authorGreaves, Jane S.
dc.contributor.authorGriffin, Matt J.
dc.contributor.authorGu, Qilao
dc.contributor.authorHayashi, Saeko S.
dc.contributor.authorHoang, Thiem
dc.contributor.authorParsons, Harriet
dc.date.accessioned2019-08-01T16:19:22Z
dc.date.available2019-08-01T16:19:22Z
dc.date.issued2019-05-29
dc.identifier.citationBISTRO 2019 , ' The JCMT BISTRO Survey : The Magnetic Field of the Barnard 1 Star-Forming Region ' , The Astrophysical Journal , vol. 877 , no. 2 , 88 . https://doi.org/10.3847/1538-4357/ab1b23
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 16669962
dc.identifier.otherPURE UUID: 00c1ad84-3f66-4381-8d1a-cc034b90e422
dc.identifier.otherArXiv: http://arxiv.org/abs/1904.07221v2
dc.identifier.otherScopus: 85068818980
dc.identifier.otherORCID: /0000-0002-2859-4600/work/62748439
dc.identifier.urihttp://hdl.handle.net/2299/21535
dc.description22 pages, 7 figures, accepted in the Astrophysical Journal
dc.description.abstractWe present the POL-2 850 μm linear polarization map of the Barnard 1 clump in the Perseus molecular cloud complex from the B-fields In STar-forming Region Observations survey at the James Clerk Maxwell Telescope. We find a trend of decreasing polarization fraction as a function of total intensity, which we link to depolarization effects toward higher-density regions of the cloud. We then use the polarization data at 850 μm to infer the plane-of-sky orientation of the large-scale magnetic field in Barnard 1. This magnetic field runs north-south across most of the cloud, with the exception of B1-c, where it turns more east-west. From the dispersion of polarization angles, we calculate a turbulence correlation length of 5.0 ±2.″5 (1500 au) and a turbulent-to-total magnetic energy ratio of 0.5 ±0.3 inside the cloud. We combine this turbulent-to-total magnetic energy ratio with observations of NH 3 molecular lines from the Green Bank Ammonia Survey to estimate the strength of the plane-of-sky component of the magnetic field through the Davis-Chandrasekhar-Fermi method. With a plane-of-sky amplitude of 120 ±60 μG and a criticality criterion λ c = 3.0 ±1.5, we find that Barnard 1 is a supercritical molecular cloud with a magnetic field nearly dominated by its turbulent component.en
dc.format.extent17
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rightsOpen
dc.subjectISM: clouds
dc.subjectISM: individual objects (Barnard 1)
dc.subjectISM: magnetic fields
dc.subjectpolarization
dc.subjectstars: formation
dc.subjectsubmillimeter: ISM
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleThe JCMT BISTRO Survey : The Magnetic Field of the Barnard 1 Star-Forming Regionen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85068818980&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2019-05-29
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/ab1b23
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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