Proper Motions in Baade's Window

Details Proper Motions in Baade's Window Proper Motions in Baade's Window

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8574g&link_type=abstract

HST Proposal ID #8574

Physics

Hst Proposal Id #8574 Stellar Populations

Scientific paper

We propose to obtain third epoch WFPC2 observations of a rich field in Baade's Window. In just three orbits, we will be able to measure very accurate proper motions for ~ 13, 000 Galactic bulge stars down to V = 23. Such a large number of stars, combined with color information, a relatively long baseline, and the high spatial resolution of HST, will enable an unprecedented opportunity to model the structure and dynamics of the Galactic bulge and bar populations. In addition, by selecting stars on the basis of their proper motions, we will be able to refine the color-magnitude distributions of stars in the bulge and the bar, and thus the corresponding initial mass functions and chemical enrichment histories.

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