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We present a detailed study on the kinematics of metal-rich stars with andwithout planets, and their relation with the Hyades, Sirius and Herculesdynamical streams in the solar neighbourhood. Accurate kinematics have beenderived for all the stars belonging to the CORALIE planet search survey. Weused precise radial velocity measurements and CCF parameters from the CORALIEdatabase, and parallaxes, photometry and proper motions from the HIPPARCOS andTycho-2 catalogues. The location of stars with planets in the thin or thickdiscs has been analysed using both kinematic and chemical constraints. Wecompare the kinematic behaviour of known planet-host stars to the remainingtargets belonging to the volume-limited sample, in particular to its metal-richpopulation. The high average metallicity of the Hyades stream is confirmed. Theplanet-host targets show a kinematic behaviour similar to that of themetal-rich comparison subsample, rather than to that of the comparison sampleas a whole, thus supporting a primordial origin for the metal excess observedin stars with known planetary companions. According to the scenarios proposedas an explanation for the dynamical streams, systems with giant planets couldhave formed more easily in metal-rich inner Galactic regions and then beenbrought into the solar neighbourhood by dynamical streams.Comment: 14 pages, 12 figures, accepted for publication in A&A (28 August  2006

Kinematics of planet-host stars and their relation to dynamical streams in the solar neighbourhood