The SARG Planet Search: hunting for planets around stars in wide
bianries

S. Desidera, R. Gratton, R.U. Claudi, M. Barbieri, G. Bonanno,
R. Cosentino, M. Endl, S. Lucatello, A.F Martinez Fiorenzano, 
F. Marzari, S. Scuderi

We present preliminary results of the planets search survey ongoing
at the italian national telescope TNG (Canary Islands) using SARG,
a very high resolution spectrograph (R ~ 150000) equipped with a
iodine cell.

We are observing about 100 stars in wide binaries, with projected
separation 100-1000 AU, with the  aim to study the possible effects
of the binarity of the formation and evolution of giant planets
and to investigate the planet-metallicity connection, by comparing
the chemical composition of the components of the pairs.

Beside a few planetary candidates, currently intensively studied for
confirmation, we have found several systems with radial velocity
variations indicating the presence of a further stellar or
substellar companion around one of the components of the wide pair.