Talk abstract details

Solar-like stars show pulsations which are used to seismically characterize the star. Using unresolved astrophotometry, we can in theory, reliably extract valuable information from the low l degree modes of pulsations. Unfortunately, the case of HD49933 has proven to be complicated: the mode identification in terms of degree was problematic (see for example Appourchaux 2008 A&A 488, Benomar 2009 A&A 506, Gruberbauer 2009 A&A 506, Benomar 2009 A&A 507). We propose to briefly review the difficulties of the mode identification and once it is established, we propose a seismic interpretation of HD49933 using a Levenberg-Marquardt algorithm to find the best fitted physical value (Mass, Age, overshoot, mixing length, initial abundances) and discuss them.