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Paper: Towards a New Classification of Early-type Galaxies: An Integral-field View
Volume: 390, Pathways Through an Eclectic Universe
Page: 227
Authors: Falcón-Barroso, J.; Bacon, R.; Cappellari, M.; Davies, R.L.; de Zeeuw, P.T.; Emsellem, E.; Krajnovic, D.; Kuntschner, H.; McDermid, R.M.; Peletier, R.F.; Sarzi, M.; van de Ven, G.
Abstract: In this proceedings paper we make use of the two-dimensional stellar kinematics of a representative sample of E and S0 galaxies obtained with the SAURON integral-field spectrograph to reveal that early-type galaxies appear in two broad flavors, depending on whether they exhibit clear large-scale rotation or not. We measure the level of rotation via a new parameter (λR) and use it as a basis for a new kinematic classification that separates early-type galaxies into slow and fast rotators. With the aid of broad-band imaging we will reinforce this finding by comparing our kinematic results to the photometric properties of these two classes.
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