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

Details Astrometric `Imaging' of Crowded Stellar Fields with Only Two SIM Pointings Astrometric `Imaging' of Crowded Stellar Fields with Only Two SIM Pointings

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.5119d&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #51.19; Bulletin of the American Astronomical Society, Vol. 33, p.861

Astronomy and Astrophysics

Astronomy

Scientific paper

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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