Poster abstract details

In the last years, space missions such as COROT, Kepler or MOST have
been providing us with very accurate photometric observational
data. In the particular case of $\delta$ Scuti stars, the observed
frequency spectra have hundreds (if not thousands) of modes and a
clear amplitude distribution. In this work we present new
techniques for modelling these observations and the results obtained.
We first answer if a $\delta$ Scuti star is stable despite all of the
observed frequencies are simultaneously excited. Then, a search for
regular patterns in the observational data yields something
resembling the large separation. This allows us to reduce the
possible positions of the star in the HR diagram, which yields a value
of the mean density with an accuracy never reached before for isolated
stars of this type.