SEARCH FOR PLANETARY MASS OBJECTS IN THE GALACTIC HALO THROUGH MICROLENSING

We present final results from a search for gravitational microlensing of stars in the Magellanic Clouds by very light machos (MAssive Compac t Halo Objects) in the Galactic Halo. The EROS programme used a CCD ca mera devoted to the detection of events with a duration ranging from 1 5 minutes to a few days; none of the 350,000 light curves exhibits a f orm which is consistent with a microlensing event. Using our detection efficiency, largely affected by the finite size of the source and ble nding effects at the lowest durations, and different models of the Gal axy, we can exclude planetary mass objects as a major constituent of t he dark Halo.