2 papers
astro-ph1996
The optical variability of QSOs. II. The wavelength dependence
S. Cristiani, S. Trentini, F. La Franca +1
The long-term variability of a sample of 149 optically selected QSOs in the field of the Selected Area 94 has been studied in the R-band. The relations between variability and lumi…
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…