Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aca....43..289u&link_type=abstract
Acta Astronomica, vol. 43, no. 3, p. 289-294
Astronomy and Astrophysics
Astronomy
269
Brown Dwarf Stars, Galactic Bulge, Gravitational Lenses, Galactic Halos, Photometry
Scientific paper
We report the discovery of the first candidate microlensing event to be discovered in the direction of the Galactic Bulge. The peak brightness of the candidate event occurred on 15 June 1993. The event had time scale (R0/V, R0-the Einstein radius, V -the transverse velocity of the lens) equal to 23.8 plus or minus 0.9 day and amplification A = 2.4 plus or minus 0.1. The lensed star is at the turn-off point in the Galactic Bulge. The lensing object is likely to be a disk M-dwarf of about 0.3 solar mass.
Kaluzny Janusz
Krzeminski Wojciech
Kubiak Mateo M. M.
Mateo Mario
Paczyński Bohdan
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