- [*] Dark matter in elliptical galaxies
- Carollo C.M., de Zeeuw P.T., van der Marel R.P.,
Danziger I.J., Qian E.E.
- ApJ Letters, 441, L25-L28, 1995
- © 1995. The American Astronomical Society.
All Rights Reserved.
this paper in the ADS
We present measurements of the shape of the stellar line-of-sight
velocity distribution out to two effective radii along the major axes
of the four elliptical galaxies NGC 2434, 2663, 3706, and 5018. The
velocity dispersion profiles are flat or decline gently with
radius. We compare the data to the predictions of f=f(E,L_z)
axisymmetric models with and without dark matter. Strong tangential
anisotropy is ruled out at large radii. We conclude from our
measurements that massive dark halos must be present in three of the
four galaxies, while for the fourth galaxy (NGC 2663) the case is
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