419 citations · 653 across the 12 of their papers we have counts for
6 papers · 1 filter
Overcoming the Rayleigh Criterion Limit with Optical Vortices
F. Tamburini, G. Anzolin, G. Umbriaco +2
We experimentally and numerically tested the separability of two independent equally-luminous monochromatic and white light sources at the diffraction limit, using Optical Vortices…
Spectroscopic analysis of tremendous--outburst--nova candidates
L. Schmidtobreick, C. Tappert, A. Bianchini +1
In the course of a long-term project investigating classical novae with large outburst amplitudes, we have performed optical spectroscopy of several old-nova candidates. We here pr…
Recovery of the old nova V840 Ophiuchi: A carbon rich system
L. Schmidtobreick, C. Tappert, A. Bianchini +1
We present optical spectroscopy and multi colour photometry of the old nova V840 Oph. We rediscovered the nova based on its position in the colour--colour diagrams. It stands out a…
GZ Cancri: a cataclysmic variable at the lower edge of the period gap
C. Tappert, A. Bianchini
We present calibrated photometry and time-resolved spectroscopy of the cataclysmic variable GZ Cnc. Radial velocities of the H-alpha emission line reveal an orbital period of 0.088…
Polarization statistics of extra-solar systems
F. Tamburini, A. Bianchini, S. Ortolani
We have analysed the optical polarimetric properties of nearby intermediate-late type MS stars and examined in some detail the pecularities displayed by those known to have planets…
The cataclysmic variable CW 1045+525: a secondary-dominated dwarf nova?
C. Tappert, J. R. Thorstensen, W. H. Fenton +3
We present spectroscopic and photometric observations of the cataclysmic variable CW 1045+525. Both the optical spectrum and the photometric lightcurve show a strong contribution o…