Mid-infrared studies of eta Carinae-II. Polarimetric imaging at 12.5 μm and the magnetic field structure

Details Mid-infrared studies of eta Carinae-II. Polarimetric imaging at 12.5 μm and the magnetic field structure Mid-infrared studies of eta Carinae-II. Polarimetric imaging at 12.5 μm and the magnetic field structure

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.273..359a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 273, Issue 2, pp. 359-366.

Astronomy and Astrophysics

Astronomy

30

Magnetic Fields-Polarization-Techniques, Polarimetric-Stars, Individual, Eta Carinae-Dust, Extinction-Infrared, Stars.

Scientific paper

Subarcsecond imaging polarimetry of eta Carinae in the mid-infrared has revealed organized grain alignment within the shells which define the homunculus. The grain alignment is discussed in terms of the combined effect of radiation-driven streaming of grains through gas and a swept-up magnetic field. It is proposed that the present structure of eta Carinae is the result of an outburst from within a dense, magnetized disc which may be a relic of an earlier collapse phase.

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