COO1 - Observational Gravitational Lensing |
Speaker_ |
Dominik, Martin |
Co-autors |
PLANET collaboration |
Talk _ |
OGLE-2005-BLG-390Lb -- Gravity reveals first cool rocky/icy exoplanet |
Abstract _ |
Gravitational microlensing is currently the only technique capable of detecting exoplanets down to Earth-mass that share their evolutionary history with potentially habitable planets. A network of five 1m-class optical telescopes distributed in longitude around the southern hemisphere enables PLANET (Probing Lensing Anomalies NETwork) to characterize such planets in observed deviations, lasting from hours to days, to ongoing microlensing events. We report the discovery of OGLE-2005-BLG-390Lb, with a mass of 3-10 Earth masses orbiting an M-dwarf at about 3 AU the first cool rocky/icy exoplanet. This provides the first observational hint that planets like Earth are common in the Universe. |