Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-10T17:02:32.334Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  01 July 2007

M. Soto ,
K. Kuijken  and
R. M. Rich
M. Soto
Affiliation:
Leiden Observatory, Leiden University, PO Box 9513, 2300RA Leiden, The Netherlands email: soto@strw.leidenuniv.nl
K. Kuijken
Affiliation:
Leiden Observatory, Leiden University, PO Box 9513, 2300RA Leiden, The Netherlands email: soto@strw.leidenuniv.nl
R. M. Rich
Affiliation:
Dept. of Physics and Astronomy, University of California, Los Angeles CA 90095-1562, U.S.A.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

Galaxy: bulgeGalaxy: kinematics and dynamicstechniques: radial velocities
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 347 - 350
Copyright
Copyright © International Astronomical Union 2008

References

Anderson, J. & King, I. R. 2000, PASP 112, 1360CrossRefGoogle Scholar
Binney, J., Gerhard, O. E., Stark, A. A., Bally, J., & Uchida, K. I. 1991, MNRAS, 252, 210CrossRefGoogle Scholar
Dwek, E., et al. 1995, ApJ 445, 716CrossRefGoogle Scholar
Englmaier, P. & Gerhard, O. 1999, MNRAS 304, 512CrossRefGoogle Scholar
Häfner, R., Evans, N. W., Dehnen, W., & Binney, J. 2000, MNRAS, 314, 433CrossRefGoogle Scholar
Kuijken, K. & Rich, R. M. 2002, AJ 124, 2054CrossRefGoogle Scholar
Kuijken, K. 2004, ASPC 317, 310KGoogle Scholar
Rich, R. M. 1988, AJ 95, 828CrossRefGoogle Scholar
Rich, R. M. 1990, ApJ 362, 604CrossRefGoogle Scholar
Sadler, E. M., Rich, R. M., & Terndrup, D. M. 1996, AJ, 112 171CrossRefGoogle Scholar
Schwarzschild, M. 1979, ApJ 232, 236CrossRefGoogle Scholar
Spaenhauer, A., Jones, B. F., & Withford, E. 1992, AJ, 103, 297CrossRefGoogle Scholar
Soto, M., Rich, R. M., & Kuijken, K. 2006, astro-ph/0611433Google Scholar
Terndrup, D. M., Rich, R. M., & Sadler, E. M., 1995, AJ, 110, 1774CrossRefGoogle Scholar
Zhao, H. S., Spergel, D. N., & Rich, R. M. 1994, AJ, 108, 2154CrossRefGoogle Scholar
Zhao, H. S. 1996, MNRAS 283, 149CrossRefGoogle Scholar