SIMBAD references

2011MNRAS.411.2067L - Mon. Not. R. Astron. Soc., 411, 2067-2075 (2011/March-1)

Evidence for dynamically important magnetic fields in molecular clouds.

LI H.-B., BLUNDELL R., HEDDEN A., KAWAMURA J., PAINE S. and TONG E.

Abstract (from CDS):

Recent observational evidence that magnetic fields are dynamically important in molecular clouds, compared to self-gravity and turbulence, is reviewed and illustrated with data from the NGC 2024 region. One piece of evidence, turbulence anisotropy, was found in the diffuse envelope of a cloud (Av≈ 1; [Heyer et al. 2008]; our data further suggest turbulence anisotropy in the cloud (Av> 7) and even near the cloud core (Av∼ 100). The data also show that magnetic fields can channel gravitational contraction even for a region with supercritical N(H2)/2Blos ratio (the ratio between the observed column density and two times the line-of-sight observed field strength), a parameter which has been widely used by observers to estimate core mass-to-flux ratios. Although the mass-to-flux ratio is constant under the flux-freezing condition, we show that N(H2)/2Blos grows with time if gravitational contraction is anisotropic due to magnetic fields. The ionized gas at the centre of IC 10: a possible localized chemical pollution by Wolf-Rayet stars

Abstract Copyright: 2010 The Author Monthly Notices of the Royal Astronomical Society2010 RAS

Journal keyword(s): MHD - turbulence - stars: formation - ISM: clouds - ISM: kinematics and dynamics - ISM: magnetic fields

Simbad objects: 10

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2021.02.28-21:05:48

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