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astro-ph2000
Detectability of the Parallax-induced Deviations in the Astrometric Centroid Shift Trajectories of Gravitational Microlensing Events
Cheongho Han, Kyongae Chang
The uncertainty of the lens mass can be substantially reduced if it is determined from the lens proper motion obtained from astrometric measurements of the source image centroid sh…
astro-ph2000★ 20 cited
Detection of Stellar Spots from the Observations of Caustic-Crossing Binary-Lens Gravitational Microlensing Events
Cheongho Han, Ho-Il Kim, Kyungae Chang +1
Recently, Heyrovský & Sasselov (1999) investigated the sensitivity of {\it single-lens} gravitational microlensing event light curves to small spots and found that during source tr…