Cortesi, A.; Merrifield, M R; Arnaboldi, Magda; Gerhard, Ortwin; Martinez-Valpuesta, I; Saha , K; Coccato, L; Bamford, Steven P.; Napolitano, N. R.; Das, P; Douglas, Nigel G; Freeman, Kenneth
To investigate the origins of S0 galaxies, we present a new method of analysing their stellar kinematics from discrete tracers such as planetary nebulae. This method involves binning the data in the radial direction so as to extract the most general possible non-parametric kinematic profiles, and using a maximum-likelihood fit within each bin in order to make full use of the information in the discrete kinematic tracers. Both disc and spheroid kinematic components are fitted, with a...[Show more]
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