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Probing Non-Axisymmetry with Proper Motions

Published online by Cambridge University Press:  07 August 2017

James Binney
James Binney*
Affiliation:
Department of Physics 1 Keble Road, Oxford, OX1 3NP, England

Abstract

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The potential of the Milky Way is almost certainly not axisymmetric: the centre is believed to be dominated by a bar, and beyond the solar radius some non-axisymmetric feature of the potential appears to warp the disk. There are grounds for believing that the outer potential is mildly elliptical. Sub mas yr–1 proper motions of objects that lie near the plane several kiloparsecs from the Sun would play a crucial role in refining our understanding of these non-axisymmetries.

Type
2. Current and Future Needs for Very Accurate Astrometry
Information
Symposium - International Astronomical Union , Volume 166: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry , 1995 , pp. 239 - 246
Copyright
Copyright © Kluwer 1995 

References

Backer, D.C., 1994. In Unsolved Problems of the Milky Way, ed. Blitz, L., Kluwer, Dordrecht Google Scholar
Binney, J.J., 1978. MNRAS, 183, 779 CrossRefGoogle Scholar
Binney, J.J., 1992. ARA&A, 30, 51 Google Scholar
Binney, J.J., 1994. In Galactic and solar system optical astrometry, ed. Morrison, L., p. 141, Cambridge University Press, Cambridge Google Scholar
Binney, J.J., Gerhard, O.E., Stark, A.A, Bally, J, Uchida, K.I., 1991. MNRAS, 252, 210 Google Scholar
Blum, R.D., Sellgren, K, Terndrup, D.M., 1994. In Unsolved Problems of the Milky Way, ed. Blitz, L., Kluwer, Dordrecht Google Scholar
Combes, F., 1994. In Unsolved Problems of the Milky Way, ed. Blitz, L., Kluwer, Dordrecht Google Scholar
Combes, F., Debbasch, F., Friedli, D., Pfenniger, D., 1990. A&A, 233, 82 Google Scholar
Cuddeford, P., Binney, J.J., 1994. MNRAS, 266, 273 CrossRefGoogle Scholar
Dekel, A., Shlosman, I., 1983. In IAU Symposium 100, Internal kinematics & dynamics of galaxies ed. Athanassoula, E., pp. 187–188, Reidel, Dordrecht Google Scholar
Fich, M., Tremaine, S., 1991. ARA&A, 29, 409 Google Scholar
Frenk, C.S., White, S.D.M., Davis, M., Efstathiou, G., 1988. ApJ, 327, 507 Google Scholar
Freudenreich, H.T., et al., 1994. ApJ, 429, L69 Google Scholar
Kuijken, K., Tremaine, S.D., 1994. ApJ, 421, 178 Google Scholar
Henderson, A.P., Jackson, P.D., Kerr, F.J., 1982. ApJ, 263, 116 Google Scholar
Merrifield, M.R., 1992. AJ, 103, 1552 CrossRefGoogle Scholar
Raha, N., Sellwood, J.A., James, R.A., Kahn, F.D., 1991. Nat, 352, 411 CrossRefGoogle Scholar
Rich, R.M., 1988. AJ, 95, 828 Google Scholar
Rich, R.M., 1990. ApJ, 362, 604 CrossRefGoogle Scholar
Sellwood, J.A., 1993. In Back to the Galaxy, eds Holt, S.S., Verter, F., p. 133, AIP, New York Google Scholar
Spaenhauer, A., Jones, B.F., Whitford, A.E., 1992. AJ, 103, 297 Google Scholar
Sparke, L., Casertano, S., 1988. MNRAS, 234, 873 Google Scholar
Stanek, K.Z., Mateo, M., Udalski, A., Szymanski, M., Kaluzny, J., Kubiak, M., 1994. ApJ, 429, L73 Google Scholar
Toomre, A., 1983. In IAU Symposium 100, Internal kinematics & dynamics of galaxies ed. Athanassoula, E., pp. 177–186, Reidel, Dordrecht CrossRefGoogle Scholar
Warren, M.S., Quinn, P.J., Salmon, J.K., Zurek, W.H., 1992. ApJ, 399, 405 Google Scholar
Weiland, et al, 1994. ApJ, 425, L81 Google Scholar
Zhao, H.S., Rich, R.M., Spergel, D.N., 1994. ApJ, 000, 000 Google Scholar