Polarization Measures of Comet Arend-Roland (1956h) and Comet Mrkos (1957d)
Open Access
- 1 February 1960
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 120 (2) , 152-162
- https://doi.org/10.1093/mnras/120.2.152
Abstract
Measurements of polarization of Comet Arend-Roland and of Comet Mrkos made photoelectrically, using interference filters and conventional B, V filters are given. The interference filters were chosen to isolate the Na emission at 5890 A and the continuum at 4800 A and 4300 A. The polarization at 4800 A in both comets is similar yielding a mean value of 20.1 per cent computed for a phase angle of 90°. This indicates that the agencies responsible for the continuum were identical in both comets. The polarization of Na emission calculated for a phase angle of 90° for Comet Mrkos was 37.4 per cent in agreement with the theoretical value for Na resonance radiation.Keywords
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