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Dark-Matter Content of Early-Type Galaxies with Planetary Nebulae

Napolitano, N. R.; Romanowsky, A. J.; Coccato, L; Capaccioli, M; Douglas, Nigel G; Noordermeer, E; Merrifield, M R; Kuijken, Konrad; Arnaboldi, Magda; Gerhard, Ortwin; Freeman, Kenneth; De Lorenzi, F; Das, P


We examine the dark matter properties of nearby early-type galaxies using planetary nebulae (PNe) as mass probes. We have designed a specialised instrument, the Planetary Nebula Spectrograph (PN.S) operating at the William Herschel telescope, with the purpose of measuring PN velocities with best efficiency. The primary scientific objective of this custom-built instrument is the study of the PN kinematics in 12 ordinary round galaxies. Preliminary results showing a dearth of dark matter in...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Conference paper
Source: Dark Galaxies and Lost Baryons
DOI: 10.1017/S1743921307014111


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