Poster abstract details

Solar-like stars with an external convective envelope can develop dynamo under the interaction of convection, rotation and magnetic fields. Even in the Sun, these dynamo effects are not yet well understood and it would be extremely important to extend this study to different stars with different characteristics. HD49933 is a F5V, 1.2 solar Mass star that has been observed by CoRoT for 60 days during the initial Run and 137 more days delayed about 6 months. Thus, we cover a total of 400 days. Assuming that the activity cycle is proportional to the rotation of the star (which spins several times faster than our star), this time span should be enough to study the existence of such a cycle. Our analysis, which has already been tested on sun-as-a-star observations done by SPM/VIRGO, has been applied to this star. In this poster we will discuss the results we found.