Student Degree of freedom

[diego45]

Hi everybody

Would like to ask you about something,

In fact i would like estimate the stochastic volatility of the return of Dow jones and cac40 (yes i'm french) :)

I would like to use a garch model, but firstly i have found that my return doesn't follow a normal distribution but look like to be a student.

I would like to know if someone knows how to assess the degree of freedom of the student. Then i could use a garch modele following the good distibution.

thanks for help

[diego45]

i have found
thx