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The Kinematics of the Magellanic Clouds

Published online by Cambridge University Press:  07 August 2017

B.E. Westerlund
B.E. Westerlund*
Affiliation:
Astronomical Observatory, Uppsala University Box 515, S-75120 Uppsala, Sweden

Abstract

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It is essential for our understanding of the evolution of the Magellanic System, comprising the Large and the Small Magellanic Cloud, the Intercloud or Bridge region and the Magellanic Stream, to know its motions in the past. The Clouds have a common envelope of neutral hydrogen; this indicates that they have been bound to each others for a long time. The Magellanic System moves in the gravitational potential of our Galaxy; it is exposed to ram pressure through its movement in the galactic halo. Both effects ought to be noticeable in their present structure and kinematics. It is generally assumed, but not definitely proven, that the Clouds have been bound to our Galaxy for at least the last 7 Gyr. Most models assume that the Clouds lead the Magellanic Stream. The interaction between the Clouds has influenced their structure and kinematics severely. The effects should be possible to trace in the motions of their stellar and gaseous components as pronounced disturbances. Recent astrometric contributions in this field show a great promise for the future if still higher accuracy can be achieved.

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. 273 - 282
Copyright
Copyright © Kluwer 1995 

References

Ardeberg, A., Maurice, E., 1979, A&A 77, 277 Google Scholar
Arellano Ferro, A., Mantegazza, L., Antonello, E., 1991, A&A 246, 341 Google Scholar
Azzopardi, M., 1982, C.R. Journées Strasbourg 4, p.20 Google Scholar
Barnes, Th.G. III, Moffett, Th.J., Gieren, W.P., 1993, ApJ 405, L51 CrossRefGoogle Scholar
Bessell, M.S., 1991, A&A 242, L17 Google Scholar
Byrd, G., Valtonen, M., McCall, M., Innanen, K., 1994, AJ 107, 2055 Google Scholar
Capaccioli, M., Della Valle, M., D'Onofrio, M., Rosino, L., 1990, ApJ 360, 63 Google Scholar
Cowley, A.P., Hartwick, F.D.A., 1991, ApJ 373, 80 Google Scholar
De Vaucouleurs, G., 1993, ApJ 415, 10 Google Scholar
Dopita, M.A., Ford, H.C., Lawrence, C.J., Webster, B.L., 1985a, ApJ 296, 390 Google Scholar
Dopita, M.A., Mathewson, D.S., Ford, V.L., 1985b, ApJ 297, 599 Google Scholar
Feast, M.W., 1992, New Aspects of Magellanic Cloud Research, p. 239 Google Scholar
Feast, M.W., Thackeray, A.D., Wesselink, A.J., 1961, MNRAS 122, 433 Google Scholar
Feitzinger, J.V., Isserstedt, J., Schmidt-Kaler, Th., 1977, A&A 57, 265 Google Scholar
Feitzinger, J.V., Haynes, R.F., Klein, U., Wielebinski, R., Perschke, M., 1987, Vistas Astr. 30, 243 CrossRefGoogle Scholar
Fitzpatrick, E.L., Savage, B.D., 1985, ApJ 292, 122 Google Scholar
Freeman, K.C., Illingworth, G., Oemler, A. Jr., 1983, ApJ 272, 488 CrossRefGoogle Scholar
Gardiner, L.T., Sawa, T., Fujimoto, M., 1994, MNRAS f 266, 567 Google Scholar
Hanuschik, R.W., Schmidt-Kaler, Th., 1991, A&A 249, 36 Google Scholar
Hardy, E., Suntzeff, N.B., Azzopardi, M., 1989, ApJ 344, 210 CrossRefGoogle Scholar
Hatzidimitriou, D., Cannon, R.D., 1993, New Aspects of Magellanic Cloud Research, p. 17 Google Scholar
Hughes, S.M.G., Wood, P.R., 1990, AJ 99, 784 Google Scholar
Hughes, S.M.G., Wood, P.R., Reid, N., 1991, AJ 101, 1304 CrossRefGoogle Scholar
Irwin, M.J., Demers, S., Kunkel, W.E., 1990, AJ 99, 191 Google Scholar
Jones, B.F., Klemola, A.R., Lin, D.N.C., 1994, AJ 107, 1333 CrossRefGoogle Scholar
Kroupa, P., Roeser, S., Bastian, U., 1994, MNRAS 266, 412 Google Scholar
Lin, D.N.C., 1993, BAAS 25, 783 Google Scholar
Lin, D.N.C., Lynden-Bell, D., 1982, MNRAS 198, 707 Google Scholar
Liu, Y.-z., 1992, A&A 257, 505 Google Scholar
Luks, Th., Rohlfs, K., 1992, A&A 263, 41 Google Scholar
McGee, R.X., 1964, Aust. J. Phys. 17, 515 Google Scholar
Mathewson, D.S., Wayte, S.R., Ford, V.L., Ruan, K., 1987, Proc. Astron. Soc. Aust. 7, 19 Google Scholar
Mathewson, D.S., Ford, V.L., Visvanathan, N., 1988, ApJ 333, 617 Google Scholar
Meatheringham, S.J., Dopita, M.A., Ford, H.C., Webster, B.L., 1988, ApJ 327, 651 Google Scholar
Mishra, R., 1985, MNRAS 212, 163 Google Scholar
Morras, R., 1985, AJ 90, 1801 Google Scholar
Panagia, N., Gilmozzi, R., Macchetto, F., Adorf, H.-M., Kirshner, R.P., 1991, ApJ 380, L23 Google Scholar
Penston, M.V., 1982, Observatory 102, 174 Google Scholar
Prévot, L., Rousseau, J., Martin, N., 1989, A&A 225, 303 Google Scholar
Reid, N., Freedman, W., 1994, MNRAS 267, 821 Google Scholar
Roeser, S., Bastian, U., 1993, Bull. Inf. CDS 42, 11 Google Scholar
Schmidt-Kaler, Th., Gochermann, J., 1992, ASP Conf. Ser. 30, 203 Google Scholar
Schommer, R.A., Olszewski, E.W., Suntzeff, N.B., Harris, H.C., 1992, AJ 103, 447 Google Scholar
Schwering, P.B.W., Israel, F.P., 1991, A&A 246, 231 Google Scholar
Shuter, W.L., 1992, ApJ 386, 101 CrossRefGoogle Scholar
Sofue, Y., 1994, Univ. Tokyo Preprint No. 94-07 Google Scholar
Suntzeff, N.B., Friel, E., Klemola, A., Kraft, R.P., Graham, J.A., 1986, AJ 91, 275 CrossRefGoogle Scholar
Suntzeff, N.B., Phillips, M.M., Elias, J.H., Cowley, A.P., Hartwick, F.D.A., Bouchet, P., 1993, PASP 105, 350 Google Scholar
Torres, G., Carranza, G.J., 1987, MNRAS 226, 513 Google Scholar
Tucholke, H.-J., Hiesgen, M., 1991, Proc IAU Symp. 148 (eds. Haynes, R., Milne, D.), p.491 Google Scholar
Westerlund, B.E., 1990, A&AR 2, 29 Google Scholar