Dynamics of the Galactic bulge/bar

Details Dynamics of the Galactic bulge/bar Dynamics of the Galactic bulge/bar

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11655k&link_type=abstract

HST Proposal ID #11655. Cycle 17

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Scientific paper

We request second-epoch ACS observations of four star fields in the Galactic bar. These will allow us to measure proper motions for tens of thousands of stars well below the turnoff, to construct a dynamical model for the bulge/bar {in combination with data already in hand from other HST fields, and from VLT spectroscopy}, and hence to take a unique look at the internal dynamical structure of the central regions of our Galaxy. By relating the kinematics with stellar population we can elucidate the formation history of the bulge and bar, and their relation to the surrounding Galactic disk. This is a resubmission of an approved Cycle 15 proposal that was hit by the ACS malfunction.;

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