Authors: Cappellari et al.
The authors present results on the shape of the initial mass function of stars in a complete sample of early-type galaxies observed with the integral-field spectroscopy. The novel aspect is that for the first time they manage to disentangle the contribution from dark matter and a changing IMF by detailed dynamical modeling in combination with stellar population modeling. The main result is that they find evidence for an IMF shape that is either top-heavy or bottom-heavy. This is an interesting and important result contributing to the general discussion on a changing IMF in galaxies.
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