The Fourth Microlensing Planet Revisited

TL;DR

This paper revisits the discovery and confirmation of the fourth microlensing planet, OGLE-2005-BLG-169Lb, highlighting its historical significance as the first microlensing planet confirmed by major observatories.

Contribution

It provides a detailed review of the discovery, confirmation process, and historical context of OGLE-2005-BLG-169Lb, emphasizing its importance in microlensing exoplanet research.

Findings

First microlensing planet confirmed by Hubble and Keck

Historical analysis of OGLE-2005-BLG-169Lb discovery

Validation of microlensing detection methods

Abstract

The fourth microlensing planet, otherwise known as OGLE-2005-BLG-169Lb, was discovered by a collaboration of US, NZ, Polish and UK astronomers in 2005-2006. Recently the results were confirmed by the Hubble Space Telescope and by the Keck Observatory. OGLE-2005-BLG-169Lb is the first microlensing planet to receive such confirmation. Its discovery and confirmation are described here in an historical context.