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1989•Monthly Notices of the Royal Astronomical SocietyOpen access

The nature of the optical nebulosity near GL 989

S. M. Scarrott, Rodney F. Warren-Smith

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Abstract

The small nebula near GL989 does not show the optical polarization features of a simple reflection nebula illuminated by a nearby source and we suggest the polarization arises from dichroic extinction by aligned grains. We propose that the nebula is the first visible sign of the formation of a cometary/bipolar nebula created by collimated outflows from the IR source.

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The small nebula near GL989 does not show the optical polarization features of a simple reflection nebula illuminated by a nearby source and we suggest the polarization arises from dichroic extinction by aligned grains. We propose that the nebula is the first visible sign of the formation of a cometary/bipolar nebula created by collimated outflows from the IR source.

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Available abstract

The small nebula near GL989 does not show the optical polarization features of a simple reflection nebula illuminated by a nearby source and we suggest the polarization arises from dichroic extinction by aligned grains. We propose that the nebula is the first visible sign of the formation of a cometary/bipolar nebula created by collimated outflows from the IR source.

Key concepts: Physics, Nebula, Reflection nebula, Emission nebula, Polarization (electrochemistry), Astrophysics, Collimated light, Protoplanetary nebula

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