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Mass-to-light ratio gradients in early-type galaxy haloes

Napolitano, Nicola R; Capaccioli, Massimo; Romanowsky, A J; Douglas, Nigel G; Merrifield, M R; Kuijken, Konrad; Arnaboldi, Magda; Gerhard, Ortwin; Freeman, Kenneth


Owing to the fact that the near future should see a rapidly expanding set of probes of the halo masses of individual early-type galaxies, we introduce a convenient parameter for characterizing the halo masses from both observational and theoretical results: ∇ℓΥ, the logarithmic radial gradient of the mass-to-light ratio. Using halo density profiles from Λ-cold dark matter (CDM) simulations, we derive predictions for this gradient for various galaxy luminosities and star formation efficiencies...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2005.08683.x


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