Kinematic properties of early-type galaxy haloes using planetary nebulae*
Freeman, K. C.; Capaccioli, M.; Napolitano, N. R.; Gerhard, O.; Coccato, L.; Kuijken, K.; Romanowsky, A. J.; Cortesi, A.; Arnaboldi, M.; Merrifield, M. R.; Das, P.; Douglas, N. G.; Noordermeer, E.; De Lorenzi, F.
Germany, Italy, Netherlands, United Kingdom, United States, Chile, Australia
Abstract
We present new planetary nebulae (PNe) positions, radial velocities and magnitudes for six early-type galaxies obtained with the Planetary Nebulae Spectrograph (PNS), along with derived two-dimensional velocity and velocity dispersion fields, and the α parameters (i.e. the number of PNe per unit luminosity). We also present new deep absorption-line long-slit kinematics for three galaxies in the sample, obtained with the FOcal Reducer and low dispersion Spectrograph (FORS2) at the Very Large Telescope (VLT).