Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics
Acta Astron. 48 (1998) 19 We measure the astrometric shifts of the light centroids for the microlensing
events in the OGLE-1 database. Of the 15 consistently detected events, 7 had
significant shifts which we were able to measure with a fair degree of
confidence. Those events with large shifts are also expected to be unresolved
with a background ``blend'', and thus, we suggest that we have identified
events in the OGLE-1 catalog which are strongly blended. Though we concentrate
on the OGLE-1 database, and use the DoPHOT package in order to perform our
analysis, we suggest that this shift is a generic effect, and should be
observable in any crowded field.
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Title
Astrometric Shifts in the OGLE-1 Microlensing Events
Creators
David M Goldberg - Princeton University
Przemyslaw Wozniak - Princeton University Observatory