Paper:	MOA-II Microlensing Exoplanet Survey
Volume:	430, Pathways Towards Habitable Planets
Page:	225
Authors:	Sumi, T.
Abstract:	We summarize the results of the exoplanet search via gravitational microlensing. The microlensing technique is unique and complementary to other methods because its sensitivity is very different from others. Microlensing is sensitive to low-mass planets down to Earth mass at relatively wide separation (1-6 AU) around dim K, M-dwarfs. Planets more distant than the snow line with large semi-major axes can be detected instantaneously without waiting for one orbital period to elapse. Most significantly, since it does not rely on the light from the primary, distant planetary systems up to the Galactic bulge at 8 kpc can be probed, which helps us to understand the Galactic distribution of planetary systems. We present the current status of the observations focusing on the survey by Microlensing Observation in Astrophysics (MOA) collaboration and summarize the features of the detected planetary systems.

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