Cross-Matching of OGLE III and GAIA catalogues: Investigation of Dark-lens microlensing candidates
Abstract
In this work, we use 13 microlensing candidates with dark lenses from OGLE III catalogue 2016MNRAS.458.3012W and cross-match them with the GAIA catalogue. We identify the microlensing source stars in the GAIA catalogue by comparing the coordinate and the magnitude of stars and using the proper motion and the parallax parameters of the source stars. Combining with the microlensing light curves as well as the microlensing parallax effect, we determine the mass and the distance of lenses from Earth. We conclude that the lens for this set of microlensing events for the massive lenses are blackholes and for the small lenses are neutron/white dwarf candidates.
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