AAS 198th Meeting, June 2001
Session 51. Optical Interferometry
Topical Session Oral, Wednesday, June 6, 2001, 8:30am-12:30pm, 2:30-6:00pm, C106

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[51.19] Astrometric `Imaging' of Crowded Stellar Fields with Only Two SIM Pointings

N. Dalal, K. Griest (UCSD)

The elimination of all but one 10m baseline on SIM would appear to ruin SIM's imaging capabilities. We show here that, even with just one baseline, SIM's broad frequency sensitivity effectively gives SIM enhanced (u,v) coverage and thus allows limited imaging capabilities. By fitting the spectrally dispersed fringe patterns from just two pointings, SIM can robustly identify and localize point sources in mildly crowded stellar fields, such as the Bulge or LMC.

This work was supported in part by the U.S. Dept. of Energy.

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