A supernova search at $z \sim 0.2 - 0.4$
LPNHE, T33-RdC, 4 place Jussieu, 75005 Paris, France
The European Supernova Cosmology Consortium
aims at bridging the gap that exists in the type Ia supernova Hubble diagram
at $z \sim 0.2 - 0.4$ (intermediate redshift range), in order
to better constrain the measurement
of the cosmological parameters $\Omega_M$ and $\Omega_\Lambda$
and some of its systematics.
We present here our first results, the discovery and follow-up of 11
type Ia supernovae
in the intermediate redshift range during 1999.