Magnetic fields from filaments to cores

P. M. Koch, Y. W. Tang, N. L. Chapman, A. Duarte-Cabral, P. T.P. Ho, Giles A Novak, N. Peretto, Y. N. Su, S. Takakuwa, H. W. Yen

Research output: Contribution to journalConference article

Abstract

How important is the magnetic (B-) field when compared to gravity and turbulence in the star-formation process? Does its importance depend on scale and location? We summarize submm dust polarization observations towards the large filamentary infrared dark cloud G34 and towards a dense core in the high-mass star-forming region W51. We detect B-field orientations that are either perpendicular or parallel to the G34 filament axis. These B-field orientations further correlate with local velocity gradients. Towards three cores in G34 we find a varying importance between B-field, gravity, and turbulence that seems to dictate varying types of fragmentation. At highest resolution towards the gravity-dominated collapsing core W51 e2 we resolve new B-field features, such as converging B-field lines and possibly magnetic channels.

Original languageEnglish (US)
Pages (from-to)557-559
Number of pages3
JournalMemorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society
Volume88
Issue number4
StatePublished - Jan 1 2017
Event2017 Conference Francesco's Legacy: Star Formation in Space and Time - Firenze, Italy
Duration: Jun 5 2017Jun 9 2017

Fingerprint

Gravitation
Magnetic Fields
filaments
Magnetic fields
gravitation
Stars
Turbulence
turbulence
magnetic fields
Dust
star formation
fragmentation
dust
Polarization
Infrared radiation
stars
gradients
high resolution
polarization

Keywords

  • ISM: Individual objects: (G34,W51)
  • ISM: Magnetic field
  • Polarization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiology Nuclear Medicine and imaging
  • Astronomy and Astrophysics
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

Cite this

Koch, P. M., Tang, Y. W., Chapman, N. L., Duarte-Cabral, A., Ho, P. T. P., Novak, G. A., ... Yen, H. W. (2017). Magnetic fields from filaments to cores. Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society, 88(4), 557-559.
Koch, P. M. ; Tang, Y. W. ; Chapman, N. L. ; Duarte-Cabral, A. ; Ho, P. T.P. ; Novak, Giles A ; Peretto, N. ; Su, Y. N. ; Takakuwa, S. ; Yen, H. W. / Magnetic fields from filaments to cores. In: Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society. 2017 ; Vol. 88, No. 4. pp. 557-559.
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Koch, PM, Tang, YW, Chapman, NL, Duarte-Cabral, A, Ho, PTP, Novak, GA, Peretto, N, Su, YN, Takakuwa, S & Yen, HW 2017, 'Magnetic fields from filaments to cores', Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society, vol. 88, no. 4, pp. 557-559.

Magnetic fields from filaments to cores. / Koch, P. M.; Tang, Y. W.; Chapman, N. L.; Duarte-Cabral, A.; Ho, P. T.P.; Novak, Giles A; Peretto, N.; Su, Y. N.; Takakuwa, S.; Yen, H. W.

In: Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society, Vol. 88, No. 4, 01.01.2017, p. 557-559.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Magnetic fields from filaments to cores

AU - Koch, P. M.

AU - Tang, Y. W.

AU - Chapman, N. L.

AU - Duarte-Cabral, A.

AU - Ho, P. T.P.

AU - Novak, Giles A

AU - Peretto, N.

AU - Su, Y. N.

AU - Takakuwa, S.

AU - Yen, H. W.

PY - 2017/1/1

Y1 - 2017/1/1

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