Polarization observations of DQ Her stars and other cataclysmic variables
Open Access
- 1 September 1986
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 222 (2) , 225-233
- https://doi.org/10.1093/mnras/222.2.225
Abstract
Linear and circular polarizations are presented for the DO Her stars FO Aqr, AE Aqr, EX Hya, AO Psc and V1223 Sgr and for 17 other cataclysmic variables. Upper limits (∼0.1 per cent in circular) are set to any periodic variations in the polarization for the DQ Her stars. The source of the large periodic intensity variations in some of these stars is investigated in the light of the null results. Cyclotron radiation is ruled out. AE Aqr may be circularly polarized at the 0.05±0.01 per cent level. Previous claims for the detection of circular polarization in HL CMa and V603 Aql are not confirmed.Keywords
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