Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Astrometric Shifts in the OGLE-1 Microlensing Events   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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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
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The categories of this paper are: math
3
The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con