MOA-2013-BLG-220Lb: a Three Jupiter Mass Planet Orbiting a Brown Dwarf

MOA-2013-BLG-220Lb: Planetary Companion to a Possible Brown Dwarf Host

Authors:

Yee et al

Abstract:

Based on its high proper motion $\mu=12.5\pm 1\,\masyr$, MOA-2013-BLG-220Lb is the best candidate to date for a microlensing planet with a verifiable brown dwarf host. This candidacy can be partially tested immediately and more fully tested by ∼2021, when the source and lens will have separated sufficiently to be resolved in high-resolution images even if the lens is at the bottom of the main sequence, and so extremely faint, H∼24. The planet-star mass ratio is q=3.01±0.02×10−3. The planet could have been detected and characterized purely with follow-up data. The potential to completely characterize planetary events from followup data has far-reaching implications for microlensing surveys, both current and into the LSST era.