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The kinematics of the outer parts of three intermediate-luminosity elliptical galaxies were studied with the Planetary Nebula Spectrograph. The galaxies' velocity-dispersion profiles were found to decline with the radius, and dynamical modeling of the data indicates the presence of little if any dark matter in these galaxies' halos. This unexpected result(More)
We have observed planetary nebulae (PNe) in several early-type galaxies using new techniques on 4-to 8-meter-class telescopes. We obtain the first large data sets (∼ > 100 velocities each) of PN kinematics in galaxies at ∼ > 15 Mpc, and present some preliminary dynamical results. Planetary nebulae (PNe) have great promise as dynamical tracers of the diffuse(More)
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