2 papers
astro-ph1995
The Optical Variability of QSO's
S. Cristiani, S. Trentini, F. La Franca +4
The long-term variability of a sample of 486 optically selected QSOs in the fields of the SA94, SA57 and SGP has been studied. The relations of variability with luminosity and reds…
astro-ph1995
The ESO Key-Programme ``A Homogeneous Bright QSO Survey'' - I The Methods and the ``Deep'' Fields
S. Cristiani, F. La Franca, P. Andreani +13
This is the first paper in a series aimed at defining a statistically significant sample of QSOs in the range and . The selection is carried out u…