Optical polarization of the cometary nebula NGC 2261

Details Optical polarization of the cometary nebula NGC 2261 Optical polarization of the cometary nebula NGC 2261

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..881g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 198, Mar. 1982, p. 881-888. Research supported by the Science Research

Astronomy and Astrophysics

Astronomy

38

Astronomical Photometry, Nebulae, Optical Polarization, Stellar Luminosity, Astronomical Maps, Cosmic Dust, Hubble Diagram, Interplanetary Magnetic Fields, Linear Polarization, Optical Reflection, Polarization Characteristics, Polarized Light, Radiant Flux Density

Scientific paper

Optical linear polarization maps in two wavebands are presented for Hubble's variable nebula, NGC 2261. The data confirm that NGC 2261 is a reflection nebula illuminated throughout by the star R Mon. Across the head of the cometary nebula and including R Mon is a band of polarization that is produced by extinction by aligned grains rather than simple scattering. It is suggested that there is an equatorial disc around R Mon and that dust grains within are aligned by a toroidal magnetic field which is a trapped remnant of the field within the cloud out of which R Mon formed.

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