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Axisymmetry in protoplanetary nebulae: using imaging polarimetry to investigate envelope structure
(2001-04)
We use ground-based imaging polarimetry to detect and image the dusty circumstellar envelopes of a sample of proto-planetary nebulae (PPNe) at near-infrared wavelengths. This technique allows the scattered light from the ...
A Polarization Flare in 3C 273: A Clue to Jet Physics
(Astronomical Society of the Pacific, 2001)
We present UBVRIJHK polarization and flux density observations of the quasar 3C 273 obtained during a time of outburst over two weeks in 1988 February. We have modelled these data with two power law components, each with ...