Probing Halos with PNe: Mass and Angular Momentum in Early-Type Galaxies
Abstract
Description
We present an observational survey program using planetary nebulae, globular clusters, and X-ray emission to probe the halos of early-type galaxies. We review evidence for scanty dark matter halos around ordinary elliptical galaxies, and discuss the possible implications. We also present measurements of rotation in the halos.
5 pages, 4 figs, to appear in Proc. ESO Workshop, Planetary Nebulae Beyond the Milky Way (19-21 May 2004), eds. L. Stanghellini, J. R. Walsh & N. G. Douglas (Springer-Verlag)
5 pages, 4 figs, to appear in Proc. ESO Workshop, Planetary Nebulae Beyond the Milky Way (19-21 May 2004), eds. L. Stanghellini, J. R. Walsh & N. G. Douglas (Springer-Verlag)