OGLE-2011-BLG-0417: A Radial Velocity Testbed for Microlensing

Abstract

Microlensing experiments are returning increasingly detailed information about the planetary and binary systems that are being detected, far beyond what was originally expected. In several cases the lens mass and distance are measured, and a few very special cases have yielded complete 8-parameter Kepler solutions, i.e., the masses of both components, five Kepler invariants and the phase. We identify one such case that is suitable for a precision test that could be carried out by comparing Doppler (RV) measurements with the predictions from the microlensing solution. The lens primary is reasonably bright (I=16.3, V=18.0) and is expected to have a relatively large RV semi-amplitude K ~ 6.35 km/s).

submitted to ApJ, 9 pages, 2 tables, 1 figure

References in corpus (3)

• Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing
• The second multiple-planet system discovered by microlensing: OGLE-2012-BLG-0026Lb, c, a pair of jovian planets beyond the snow line
• Characterizing Low-Mass Binaries From Observation of Long Time-scale Caustic-crossing Gravitational Microlensing Events

Cited by in corpus (8)

• Orbital motion effects in astrometric microlensing
• OGLE-2015-BLG-0479LA,B: Binary Gravitational Microlens Characterized by Simultaneous Ground-based and Space-based Observation
• Two Stars Two Ways: Confirming a Microlensing Binary Lens Solution with a Spectroscopic Measurement of the Orbit
• The first radial velocity measurements of a microlensing event: no evidence for the predicted binary
• A New Method to Calibrate the Stellar Color/Surface-Brightness Relation
• Spectroscopic characterisation of microlensing events Towards a new interpretation of OGLE-2011-BLG-0417
• OGLE-2017-BLG-0537: Microlensing Event with a Resolvable Lens in $\lesssim 5$ years from High-resolution Follow-up Observations
• Reconciling the predictions of microlensing analysis with radial velocity measurements for OGLE-2011-BLG-0417