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An optical and near-infrared study of the AM Herculis-type binary CW 1103+254
(1985)
All main components of the AM Herculis-type binary CW 1103 + 254 can be distinguished by means of observations encompassing optical and near-IR photometry and polarimetry, together with optical spectroscopy and spectropolarimetry. ...
Infrared spectropolarimetric observations of BNKL : the grain alignment mechanism
(1985)
Spectropolarimetric observations between 8 - 13 μm of BN, IRc 2, 3, 4 and a further region in the Orion infrared complex BNKL are presented. Apart from IRc 2, all show evidence for absorption by aligned grains and have ...
Coordinated multisite observations of the variability of BL Lac
(1985)
The authors present the results of multisite observations of the optical polarization of BL Lac, together with some flux measurements, at a time when BL Lac was relatively faint. The level of polarization varies in a manner ...