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Paper: Extragalactic Planetary Nebulae as Mass Tracers: Biases in the Estimate of Dynamical Quantities
Volume: 197, XVth IAP Meeting Dynamics of Galaxies: From the Early Universe to the Present
Page: 103
Authors: Arnaboldi, M.; Napolitano, N.; Capaccioli, M.
Abstract: Planetary nebulae (PNe) are very important kinematical tracers of the outer regions of early-type galaxies, where the integrated light techniques fails. Under ad hoc assumptions, they allow measurements of rotation velocity and velocity dispersion profile from discrete radial velocity fields. We present the results on the precision allowed by different set of radial velocity samples, discuss the hypotheses in the analysis of discrete velocity fields and their impact on the inferred kinematics of the stellar population.
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