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The identification of transiting planets candidates and their a posteriori confirmation and characterization by means of spectroscopic follow-up is allowing us to study the internal physics of these planets. Here we briefly discuss the spectroscopic follow-up of the OGLE transiting candidates carried out at the ESO/VLT. [ABSTRACT FROM AUTHOR]

We present a series of studies based on high-resolution UVES/VLT spectroscopy of several faint stars for which a transit by a giant planet has been detected. The spectra were used to derive accurate stellar parameters and chemical abundances for the targets, as well as to estimate their ages and galactic cartesian coordinates. The results are discussed in the context of the chemical abundances of stars with known giant planets. The derived chemical abundances are also compared with those found for stars in the solar neighborhood. [ABSTRACT FROM AUTHOR]

We present stellar parameters and metallicities for a sample of 64 high metal content stars not known to harbor any planet. This sample provides the reference for investigating new correlations between stars and the existence of an orbiting planet. [ABSTRACT FROM AUTHOR]

In this paper we present preliminary results suggesting the existence of a correlation between the systemic radial velocity of solar-type stars and their activity level. [ABSTRACT FROM AUTHOR]