OPTICAL GRAVITATIONAL LENSING EXPERIMENT - PHOTOMETRY OF THE MACHO-SMC-1 MICROLENSING CANDIDATE

Authors
UDALSKI A SZYMANSKI M KUBIAK M PIETRZYNSKI G WOZNIAK P ZEBRUN K
Citation
A. Udalski et al., OPTICAL GRAVITATIONAL LENSING EXPERIMENT - PHOTOMETRY OF THE MACHO-SMC-1 MICROLENSING CANDIDATE, Acta Astronomica, 47(4), 1997, pp. 431-436
Citations number
4
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Acta Astronomica → ACNP
ISSN journal
00015237
Volume
47
Issue
4
Year of publication
1997
Pages
431 - 436
Database
ISI
SICI code
0001-5237(1997)47:4<431:OGLE-P>2.0.ZU;2-L
Abstract
We present photometric observations of the MACHO-SMC-1 microlensing ca ndidate collected by the OGLE-2 project. We show light curves of both components of the 1.6 arcsec blend: microlensed star and its optical c ompanion. We find the contribution of the optical companion to the tot al 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 ell ipsoidal binary system.