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Mass models of three southern late-type dwarf spirals

  • C. Carignan (a1) (a2)

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Although rotation-curve studies of spiral galaxies have unambiguously established the presence of dark matter, and theoretical studies have shown that its location is likely to be in a separate spheroidal halo component (Binney, 1978; Tubbs and Sanders, 1979; Monet, Richstone and Schechter, 1981), very little is known about its spatial distribution and its nature. Recently, Faber and Lin (Faber and Lin, 1983; Lin and Faber, 1983) have shown that, if one can get a rough idea of fundamental parameters like the halo scale length and the halo-to-disk ratio, it is also possible to put strong constraints on the nature of non-luminous matter.

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References

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Binney, J. 1978, M.N.R.A.S. 183, 779
Carignan, C. 1983, PhD thesis, Australian National University
Carignan, C. and Freeman, K.C. 1983, in preparation
Davoust, E. and de Vaucouleurs, G. 1980, Ap. J. 242, 30
Faber, S.M. and Lin, D.N.C. 1983, Ap. J. Lett. 266, L17
Kalnajs, A. 1983, in Internal Kinematics and Dynamics of Galaxies, ed. Athanassoula, E., I.A.U. Symposium no. 100, p. 87
Lin, D.N.C. and Faber, S.M. 1983, Ap. J. Lett. 266, L21
Monet, D.G., Richstone, D.O. and Schechter, P.L. 1981, Ap. J. 245, 454.
Tubbs, A.D. and Sanders, R.H. 1979, Ap. J. 230, 736.

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