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Optical polarimetry and infrared photometry of two AM Her binaries: 1RXS J161008.0+035222 and 1RXS J231603.9-052713
C. V. Rodrigues, F. J. Jablonski, F. D'Amico +4
We present the first optical circular and linear polarization measurements of two polar candidates from ROSAT: 1RXS J161008.0+035222 and 1RXS J231603.9-052713. We also present H ba…
Circular polarimetry of magnetic cataclysmic variables
Claudia V. Rodrigues, Deonisio Cieslinski, Francisco J. Jablonski +4
Magnetic cataclysmic variables are complex accreting binary systems with short orbital periods. Here we present circular polarimetry of five magnetic cataclysmic variable candidate…
Cyclical period changes in the dwarf novae V2051 Oph and V4140 Sgr
R. Baptista, B. W. Borges, H. E. Bond +3
We report the identification of cyclical changes in the orbital period of the eclipsing dwarf novae V2051 Ophiuchi and V4140 Sagitarii. We used sets of white dwarf mid-eclipse timi…
Optical polarization and near IR photometry of the proto-planetary nebula Hen 3-1475
Claudia V. Rodrigues, Francisco J. Jablonski, Jane Gregorio-Hetem +2
We present BVRI CCD aperture polarization and near-infrared photometry of the proto-planetary nebula Hen 3-1475. Its intrinsic polarization is high and shows a strong spectral depe…