3-D kinematics in low foreground extinction windows of the Galactic bulge†

Details 3-D kinematics in low foreground extinction windows of the Galactic bulge† 3-D kinematics in low foreground extinction windows of the Galactic bulge†

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..245..347s&link_type=abstract

Formation and Evolution of Galaxy Bulges, Proceedings of the International Astronomical Union, IAU Symposium, Volume 245, p. 347

Astronomy and Astrophysics

Astronomy

1

Galaxy: Bulge, Galaxy: Kinematics And Dynamics, Techniques: Radial Velocities

Scientific paper

We report the progress in our measurement of the 3-D kinematics in several low foreground extinction windows of the Galactic Bulge. In order to complete the 3-D kinematics of as many stars as possible, proper motions and radial velocities have been obtained using HST WFPC2-ACS and VLT VIMOS respectively. Our preliminary results for fields close to the galactic minor axis show a significant vertex deviation, which can be directly related to a signature of triaxility. This is one of the strongest proofs to date of the presence of the stellar bar in the galactic bulge.

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