First Microlens Mass Measurement: PLANET Photometry of EROS BLG‐2000‐5
First Microlens Mass Measurement: PLANET Photometry of EROS BLG‐2000‐5
We analyze PLANET photometric observations of the caustic-crossing binary-lens microlensing event, EROS BLG-2000-5, and find that modeling the observed light curve requires incorporation of the microlens parallax and the binary orbital motion. The projected Einstein radius (~r_E = 3.61 +/- 0.11 AU) is derived from the measurement of the microlens …