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The Stellar Cluster

Published online by Cambridge University Press:  23 September 2016

K. Sellgren
K. Sellgren*
Affiliation:
Institute for Astronomy, University of Hawaii 2680 Woodlawn Drive Honolulu, Hawaii 96822 USA

Abstract

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Observations of the stellar cluster in the central 10 pc of the Galaxy are reviewed. The stellar density law derived from the observed light distribution and the effects on this density law of variable extinction, the possibility of a varying mass-to-light ratio, and the current debate as to the core radius of the cluster are all important for establishing the true mass distribution of the stellar cluster. The presence of the supergiant IRS 7 in the Galactic Center establishes that some recent star formation has occurred, but the age and extent of a possible starburst are still being established. The kinematics of the stellar cluster show predominantly velocity dispersion, in contrast to the systematic gas motion observed, yet the total mass distributions derived from stellar and gas kinematics agree reasonably well. The core radius of the cluster is critical to establishing whether or not a central dark mass is required to explain the total mass distribution.

Information

Type
Stars and the Central Mass Distribution
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989, pp. 477 - 486
Copyright
Copyright © Kluwer 1989 

References

Aitken, D. K., Roche, P. F., Bailey, J. A., Briggs, G. P., Hough, J. H., and Thomas, J. A. 1986, M.N.R.A.S. , 218, 363.CrossRefGoogle Scholar
Allen, D. A., Hyland, A. R., and Jones, T. J. 1983, M.N.R.A.S. , 204, 1145.Google Scholar
Allen, D. A., and Sanders, R. H. 1986, Nature , 319, 191.Google Scholar
Bahcall, J. N., and Tremaine, S. 1981, Ap. J. , 244, 805.Google Scholar
Bailey, M. E. 1980, M.N.R.A.S. , 190, 217.Google Scholar
Becklin, E. E., and Neugebauer, G. 1968, Ap. J. , 151, 145.Google Scholar
Becklin, E. E., and Neugebauer, G. 1975, Ap. J. (Letters) , 200, L71.Google Scholar
Becklin, E. E., and Neugebauer, G. 1978, Pub. A.S.P. , 90, 657.Google Scholar
Gatley, I., DePoy, D., and Fowler, A. 1988, abstract, IAU Symposium 136.Google Scholar
Gatley, I., Jones, T. J., Hyland, A. R., Beattie, D. H., and Lee, T. J. 1984, M.N.R.A.S. , 210, 565.Google Scholar
Gatley, I., Jones, T. J., Hyland, A. R., Wade, R., Geballe, T. R., and Krisciunas, K. 1986, M.N.R.A.S. , 222, 299.Google Scholar
Geballe, T. R., Baas, F., and Wade, R. 1988, Astr. Ap. , submitted.Google Scholar
Geballe, T. R., Krisciunas, K., Lee, T. J., Gatley, I., Wade, R., Duncan, W. D., Garden, R., and Becklin, E. E. 1984, Ap. J. , 284, 118.Google Scholar
Geballe, T. R., Wade, R., Krisciunas, K., Gatley, I., and Bird, M. C. 1987, Ap. J. , 320, 562.CrossRefGoogle Scholar
Genzel, R. 1988, invited review, IAU Symposium 136.Google Scholar
Genzel, R., and Townes, C. H. 1987, Ann. Rev. Astr. Ap. , 25, 377.Google Scholar
Glass, I. S., Catchpole, R. M., and Whitelock, P. A. 1987, M.N.R.A.S. , 227, 373.Google Scholar
Habing, H. J., Olnon, F. J., Winnberg, A., Matthews, H. E., and Baud, B. 1983, Astr. Ap. , 128, 230.Google Scholar
Hall, D. N. B., Kleinmann, S. G., and Scoville, N. Z. 1982, Ap. J. (Letters) , 262, L53.Google Scholar
Lacy, J. H. 1988, invited review, IAU Symposium 136.Google Scholar
Lebofsky, M. J. 1979, A.J. , 84, 324.Google Scholar
Lebofsky, M. J., and Rieke, G. H. 1987, The Galactic Center, AIP Conf. Proc. 155 , ed. Backer, D. (New York: American Institute of Physics), p. 79.Google Scholar
Lebofsky, M. J., Rieke, G. H., and Tokunaga, A. T. 1982, Ap. J. , 263, 736.Google Scholar
Lindqvist, M., Winnberg, A., Matthews, H. E., Habing, H. J., and Olnon, F. M. 1988, abstract, IAU Symposium 136.Google Scholar
McGinn, M. T., Sellgren, K., Becklin, E. E., and Hall, D. N. B. 1989, Ap. J. , in press.Google Scholar
Neugebauer, G., Becklin, E. E., Beckwith, S., Matthews, K., and Wynn-Williams, C. G. 1976, Ap. J. (Letters) , 205, L139.Google Scholar
Rieke, G. H., and Lebofsky, M. J. 1987, The Galactic Center, AIP Conf. Proc. 155 , ed. Backer, D. (New York: American Institute of Physics), p. 91.Google Scholar
Rieke, G. H., and Rieke, M. J. 1988a, Ap. J. (Letters) , 330, L33.Google Scholar
Rieke, G. H., and Rieke, M. J. 1988b, Ap. J. (Letters) , submitted.Google Scholar
Rieke, G. H., Rieke, M. J., and Paul, A. E. 1988, Ap. J. , in press.Google Scholar
Sanders, R. H., and Lowinger, T. 1972, A.J. , 77, 292.CrossRefGoogle Scholar
Sellgren, K., Hall, D. N. B., Kleinmann, S. G., and Scoville, N. Z. 1987, Ap. J. , 317, 881.Google Scholar
Serabyn, E. 1988, invited review, IAU Symposium 136.Google Scholar
Storey, J. W. V., and Allen, D. A. 1983, M.N.R.A.S. , 204, 1153.Google Scholar
Treffers, R. R., Fink, U., Larson, H. P., and Gautier, T. N. 1976, Ap. J. (Letters) , 209, L115.Google Scholar
Werner, M. W., Davidson, J. A., Morris, M. Novak, G., Platt, S. R., and Hildebrand, R. H. 1988, Ap. J. , in press.Google Scholar
Winnberg, A., Baud, B., Matthews, H. E., Habing, H. J., and Olnon, F. M. 1985, Ap. J. (Letters) , 291, L45.Google Scholar
Wollman, E. R., Smith, H. A., and Larson, H. P. 1982, Ap. J. , 258, 506.Google Scholar
Yusef-Zadeh, F., Ekers, R., and Morris, M. 1988, abstract, IAU Symposium 136.Google Scholar