Optical Gravitational Lensing Experiment. Photometry of the MACHO-SMC-1 Microlensing Candidate

Details Optical Gravitational Lensing Experiment. Photometry of the MACHO-SMC-1 Microlensing Candidate Optical Gravitational Lensing Experiment. Photometry of the MACHO-SMC-1 Microlensing Candidate

1997-10-31

arxiv.org/abs/astro-ph/9710365v1

Acta Astronomica 1997, 47, 431.

Astronomy and Astrophysics

Astrophysics

5 pages, Latex, 4 Figures. Submitted to Acta Astronomica

Scientific paper

We present photometric observations of the MACHO-SMC-1 microlensing candidate collected by the OGLE-2 project. We show light curves of both components of the 1.6 arcsec blend: microlensed star and its optical companion. We find the contribution of the optical companion to the total flux to be 24% and confirm presence of the small amplitude periodic oscillations in the light curve of the lensed star with the period of 5.096 days and amplitude 0.05 mag. The lensed star is probably an ellipsoidal binary system.

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