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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1917

Title: Astrometric shifts in the OGLE-1 microlensing events
Authors: Goldberg, David
Wo´zniak, Przemyslaw
Keywords: Gravitational Microlensing
Issue Date: 18-Dec-1997
Publisher: American Astronomical Society
Citation: The Astrophysical Journal. 48, pp. 19.
Abstract: 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.
URI: http://arxiv.org/abs/astro-ph/9712262v1
Appears in Collections:Faculty Research and Publications (Physics)

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