The oldest stars of the bulge: new information on the ancient Galaxy
  Recently the search for the oldest stars have started to focus on the Bulge
region. The Galactic bulge hosts extremely old stars, with ages compatible with
the ages of the oldest halo stars. The data coming from these recent
observations present new chemical signatures and therefore provide
complementary constraints to those already found in the halo. So, the study of
the oldest bulge stars can improve dramatically the constraints on the nature
of first stars and how they polluted the pristine ISM of our Galaxy. We present
our first results regarding the light elements (CNO) and the neutron capture
elements. Our findings in the oldest bulge stars support the scenario where the
first stellar generations have been fast rotators.
