Probing Halos with PNe: Mass and Angular Momentum in Early-Type Galaxies
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🌌 astro-ph
keywords
halosgalaxiesearly-typeangulararoundclustersdarkdiscuss
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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.
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