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The Mass Distribution in the Central Few Parsecs of the Galaxy

Published online by Cambridge University Press:  23 September 2016

John H. Lacy
John H. Lacy*
Affiliation:
Astronomy Department University of Texas Austin, Texas, 78712 U.S.A.

Abstract

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The determination of the mass distribution in the central few parsecs of the Galaxy, primarily from the ionized gas dynamics, is discussed. The gas motions are described and interpreted assuming that the orbits are determined by gravitational forces. It is shown that there is good evidence for a central mass of ~ 2 × 106 M⊙. The primary uncertainty in this conclusion results from the possibility of significant magnetic forces. In the absence of corroborating evidence, the case for a massive black hole cannot be considered proven.

Type
Stars and the Central Mass Distribution
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989 , pp. 493 - 499
Copyright
Copyright © Kluwer 1989 

References

Aitken, D. K., Roche, P. F., Bailey, J. A., Briggs, G. P., Hough, J. H., & Thomas, J. A. (1986). M.N.R.A.S. 218: 363.Google Scholar
Allen, D. A., Hyland, A. R., & Jones, T. J. (1983). M.N.R.A.S. 204: 1145.CrossRefGoogle Scholar
Allen, D. A. & Sanders, R. M. (1986). Nature 319: 191.Google Scholar
Geballe, T. R., Krisciunas, K. L., Lee, T. J., Gatley, I. & Wade, R., et al. (1984). Ap. J. 284: 118.CrossRefGoogle Scholar
Geballe, T. R., Wade, R., Krisciunas, K. L., Gatley, I. & Bird, M. C. (1987). Ap. J. 320: 562.Google Scholar
Genzel, R. & Townes, C. H. (1987). Ann. Rev. Astr. Ap. 25: 377.Google Scholar
Güsten, R., Genzel, R., Wright, M. C. H., Jaffe, D. T., Stutzki, J. & Harris, A. I. (1987). Ap.J. 318: 124.CrossRefGoogle Scholar
Hall, D. N. B., Kleinmann, S. G. & Scoville, N. Z. (1982). Ap. J. Lett. 262: L53.Google Scholar
Lacy, J. H., Townes, C. H. & Hollenbach, D. J. (1982). Ap. J. 262: 120.Google Scholar
Lo, K. Y. & Claussen, M. J. (1983). Nature 306: 647.Google Scholar
McGinn, M. T., Sellgren, K., Becklin, E. E., Hall, D. N. B. & Gatley, I. (1988). Ap. J. , in press.Google Scholar
Quinn, P. J. & Sussman, G. J. (1985). Ap. J. 288: 377.Google Scholar
Rieke, G. H. & Lebofsky, M. J. (1987). The Galactic Center , ed. Backer, D. C., p. 91.Google Scholar
Rieke, G. H. & Rieke, M. J. (1988). Ap. J. Letts. 330: L33.Google Scholar
Serabyn, E. & Lacy, J. H. (1985). Ap. J. 293: 445.CrossRefGoogle Scholar
Serabyn, E., Lacy, J. H., Townes, C. H. & Bharat, R. (1988). Ap. J. 326: 171.Google Scholar
Werner, M. W., Davidson, J. A., Morris, M., Novak, G., Platt, S. R. & Hildebrand, R. H. (1988). Ap. J. in press.Google Scholar