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Resource Record Summary

Catalog Service:
NGC6334 850um I, Q, U Stokes parameter maps

Short name: J/A+A/647/A78
IVOA Identifier: ivo://CDS.VizieR/J/A+A/647/A78
DOI (Digital Object Identifier): 10.26093/cds/vizier.36470078
Publisher: CDSivo://CDS[Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/647/A78
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2021 Mar 11 10:27:46Z
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Description


Molecular filaments and hubs have received special attention recently thanks to new studies showing their key role in star formation. While the (column) density and velocity structures of both filaments and hubs have been carefully studied, their magnetic field (B-field) properties have yet to be characterized. Consequently, the role of B-fields in the formation and evolution of hub-filament systems is not well constrained. We aim to understand the role of the B-field and its interplay with turbulence and gravity in the dynamical evolution of the NGC 6334 filament network that harbours cluster-forming hubs and high-mass star formation. We present new observations of the dust polarized emission at 850mum toward the 2pcx10pc map of NGC 6334 at a spatial resolution of 0.09pc obtained with the James Clerk Maxwell Telescope (JCMT) as part of the B-field In STar-forming Region Observations (BISTRO) survey. We study the distribution and dispersion of the polarized intensity (PI), the polarization fraction (PF), and the plane-of-the-sky (POS) B-field angle ({chi}B_POS_) toward the whole region, along the 10pc-long ridge and along the sub-filaments connected to the ridge and the hubs. We derived the power spectra of the intensity and {chi}B_POS_ along the ridge crest and compared them with the results obtained from simulated filaments. The observations span ~3 orders of magnitude in I and PI and ~2 orders of magnitude in PF (from ~0.2% to ~20%). A large scatter in PI and PF is observed for a given value of I. Our analyzes show a complex B-field structure when observed over the whole region (~10pc); however, at smaller scales (~1pc), {chi}B_POS_ varies coherently along the crests of the filament network. The observed power spectrum of {chi}B_POS_ can be well represented with a power law function with a slope of -1.33+/-0.23, which is ~20% shallower than that of I. We find that this result is compatible with the properties of simulated filaments and may indicate the physical processes at play in the formation and evolution of star-forming filaments. Along the sub-filaments, {chi}B_POS_ rotates from being mostly perpendicular or randomly oriented with respect to the crests to mostly parallel as the sub-filaments merge with the ridge and hubs. This variation of the B-field structure along the sub-filaments may be tracing local velocity flows of infalling matter in the ridge and hubs. Our analysis also suggests a variation in the energy balance along the crests of these sub-filaments, from magnetically critical or supercritical at their far ends to magnetically subcritical near the ridge and hubs. We also detect an increase in PF toward the high-column density (N_H2_>~10^23^cm^-2^) star cluster-forming hubs. These latter large PF values may be explained by the increase in grain alignment efficiency due to stellar radiation from the newborn stars, combined with an ordered B-field structure. These observational results reveal for the first time the characteristics of the small-scale (down to ~0.1pc) B-field structure of a 10pc-long hub-filament system. Our analyzes show variations in the polarization properties along the sub-filaments that may be tracing the evolution of their physical properties during their interaction with the ridge and hubs. We also detect an impact of feedback from young high-mass stars on the local B-field structure and the polarization properties, which could put constraints on possible models for dust grain alignment and provide important hints as to the interplay between the star formation activity and interstellar B-fields.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

Publisher: CDSivo://CDS[Pub. ID]

Creators:
Arzoumanian D.Furuya R.Hasegawa T.Tahani M.Sadavoy S.Hull C.L.H.Johnstone D.Koch P.M.Inutsuka S.Doi Y.Hoang T.Onaka T.Iwasaki K.Shimajiri Y.Inoue T.Peretto N.Andre P.Bastien P.Berry D.Chen H.-R.V.Di Francesco J.Eswaraiah C.Fanciullo L.Fissel L.M.Hwang J.Kang J.-h.Kim G.Kim K.-T.Kirchschlager F.Kwon W.Lee C.W.Liu H.-L.Lyo A.-R.Pattle K.Soam A.Tang X.Whitworth A.Ching T.-C.Coude S.Wang J.-W.Ward-Thompson D.Lai S.-P.Qiu K.Bourke T.L.Byun D.-Y.Chen M.Chen Z.Chen W.P.Cho J.Choi Y.Choi M.Chrysostomou A.Chung E.J.Dai S.Diep P.N.Duan H.-Y.Duan Y.Eden D.Fiege J.Franzmann E.Friberg P.Fuller G.Gledhill T.Graves S.Greaves J.Griffin M.Gu Q.Han I.Hatchell J.Hayashi S.Houde M.Jeong I.-G.Kang M.Kang S.-J.Kataoka A.Kawabata K.Kemper F.Kim M.-R.Kim K.H.Kim J.Kim S.Kirk J.Kobayashi M.I.N.Konyves V.Kusune T.Kwon J.Lacaille K.Law C.-Y.Lee C.-F.Lee Y.-H.Lee S.-S.Lee H.Lee J.-E.Li H.-b.Li D.Liu J.Liu T.Liu S.-Y.Lu X.Mairs S.Matsumura M.Matthews B.Moriarty-Schieven G.Nagata T.Nakamura F.Nakanishi H.Ngoc N.B.Ohashi N.Park G.Parsons H.Pyo T.-S.Qian L.Rao R.Rawlings J.Rawlings M.Retter B.Richer J.Rigby A.Saito H.Savini G.Scaife A.Seta M.Shinnaga H.Tamura M.Tang Y.-W.Tomisaka K.Tram L.N.Tsukamoto Y.Viti S.Wang H.Xie J.Yen H.-W.Yoo H.Yuan J.Yun H.-S.Zenko T.Zhang G.Zhang C.-P.Zhang Y.Zhou J.Zhu L.de Looze I.Dowell C.D.Eyres S.Falle S.Friesen R.Robitaille J.-F.van Loo S.

Contact Information:
X CDS support team
Email: cds-question at unistra.fr
Address: CDS
Observatoire de Strasbourg
11 rue de l'Universite
F-67000 Strasbourg
France

Status of This Resource

This section provides some status information: the resource version, availability, and relevant dates.

Version: n/a
Availability: This is an active resource.
  • This service provides only public data.
Relevant dates for this Resource:
  • Updated: 2021 Jul 05 08:37:41Z
  • Created: 2021 Mar 11 10:27:46Z

This resource was registered on: 2021 Mar 11 10:27:46Z
This resource description was last updated on: 2021 Oct 21 00:00:00Z

What This Resource is About

This section describes what the resource is, what it contains, and how it might be relevant.

Resource Class: CatalogService
This resource is a service that provides access to catalog data. You can extract data from the catalog by issuing a query, and the matching data is returned as a table.
Resource type keywords:
  • Catalog
Subject keywords:
  • H II regions
  • Polarimetry
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/647/A78 Literature Reference: 2021A&A...647A..78A

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]
Conesearch service(IsServedBy)

Data Coverage Information

This section describes the data's coverage over the sky, frequency, and time.

Rights and Usage Information

This section describes the rights and usage information for this data.

Rights:

Available Service Interfaces

Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for this service interface:
Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for this service interface:
  • URL-based interface: http://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/647/A78
Table Access Protocol - Auxiliary ServiceXX

This is a standard IVOA service that takes as input an ADQL or PQL query and returns tabular data.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for the standard interface:
  • http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Simple Cone SearchXXSearch Me

This is a standard IVOA service that takes as input a position in the sky and a radius and returns catalog records with positions within that radius.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:
Cone search capability for table J/A+A/647/A78/list (List of fits files)
Available endpoints for the standard interface:
  • http://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/647/A78/list?
Maximum search radius accepted: 180.0 degrees
Maximum number of matching records returned: 50000
This service supports the VERB input parameter:
Use VERB=1 to minimize the returned columns or VERB=3 to maximize.
Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:
Associated data
Available endpoints for this service interface:


Developed with the support of the National Science Foundation
under Cooperative Agreement AST0122449 with the Johns Hopkins University
The NAVO project is a member of the International Virtual Observatory Alliance

This NAVO Application is hosted by the Space Telescope Science Institute

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