Magnetic field structure in a high-mass outflow/disk system

Details Magnetic field structure in a high-mass outflow/disk system Magnetic field structure in a high-mass outflow/disk system

2010-10-18

arxiv.org/abs/1010.3635v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4-5 pages, 3 figures, accepted for ApJL

Scientific paper

To characterize the magnetic field structure of the outflow and core region within a prototypical high-mass star-forming region, we analyzed polarized CO(3-2) - for the first time observed with the Submillimeter Array -- as well as 880mum submm continuum emission from the high-mass outflow/disk system IRAS18089-1732. Both emission features with polarization degrees at a few percent level indicate that the magnetic field structure is largely aligned with the outflow/jet orientation from the small core scales to the larger outflow scales. Although quantitative estimates are crude, the analysis indicates that turbulent energy dominates over magnetic energy. The data also suggest a magnetic field strength increase from the lower-density envelope to the higher-density core.

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