1304.6932 (Alexandre Deur)

A relation between the dark mass of elliptical galaxies and their shape    [PDF]

Alexandre Deur

It has been reported that there appears to be little non-baryonic dark matter in some elliptical galaxies. We have studied a large number of elliptical galaxies and found a clear, previously unknown, correlation between their dark matter content and the ellipticity of their visible shape. At equal luminosities, flattened medium-size elliptical galaxies have on the average five times larger total mass than round ones. Such a correlation provides a new testing ground for models of dark matter and galaxy formation.

View original: http://arxiv.org/abs/1304.6932