112 citations · 113 across the 3 of their papers we have counts for
3 papers
astro-ph2000
Was the Whirlpool (M51) a Spiral Galaxy before the Encounter with the Companion NGC 5195?
F. Natali, L. Di Fino, G. Natali
Using the B-I color index in the radial photometry of M51, applied to defined azimuthal sectors, we reveals asymmetries in the shape of the density pattern of the galactic arms. Th…
astro-ph1998★ 1 cited
BVI Microvariability in BL LAC during the summer 1997 outburst
R. Speziali, G. Natali
BL Lac has been observed during the outburst occurred in the 1997 summer (Noble et al. 1997; Bloom et al. 1997) in three optical bands (BVI), with the aim of studying the intranigh…
astro-ph1995★ 112 cited
The Variability of Quasars. II. Frequency Dependence
A. Di Clemente, E. Giallongo, G. Natali +2
The variability of 30 PG quasars has been observed in the red band during three years. A rest-frame structure function analysis shows an increase of variability with the time inter…