Talk abstract details

We present the first observation run which constrains a whole exo-planetary system, both with asteroseismology and detection of direct light coming from the planet. On January 2009, the CoRoT satellite has observed the solar-like star HD~46375 for 34 days, known to host a {\it not-transiting} Saturn like planet ($M \sin i = 0.22$ M$_{\mbox{jup}}$). Despite of a very low excess of power, the large separation of the p-modes was identified. Moreover, the direct light due to the changing phases of the planet was evidenced, which allowed us to constrain the planetary albedo. In parallel to these observations, a Zeeman Doppler imaging campaign was led with the Narval spectro-polarimeter, which constrained the star inclination. We present the modelling of the star obtained with the seismic input and the global vision of the HD~46375 system after CoRoT. Such a work is the first example of Plato-like observations.