448 citations · 13.6k across the 269 of their papers we have counts for
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Tracing the Star Stream Through M31 Using Planetary Nebula Kinematics
H. R. Merrett, K. Kuijken, M. R. Merrifield +12
We present a possible orbit for the Southern Stream of stars in M31, which connects it to the Northern Spur. Support for this model comes from the dynamics of planetary nebulae (PN…
Early-type Galaxy Halo Dynamics inferred using the PN Spectrograph
N. G. Douglas, A. J. Romanowsky, K. Kuijken +6
A new instrument is providing crucial data with which to probe the structure of dark halos in elliptical galaxies.
Elliptical Galaxies: Darkly Cloaked or Scantily Clad?
A. J. Romanowsky, N. G. Douglas, K. Kuijken +7
Planetary nebulae (PNe) may be the most promising tracers in the halos of early-type galaxies. We have used multi-object spectrographs on the WHT and the VLT, and the new Planetary…
Is there a dichotomy in the Dark Matter as well as in the Baryonic Matter properties of ellipticals?
N. R. Napolitano, M. Capaccioli, M. Arnaboldi +5
We have found a correlation betwen the M/L global gradients and the structural parameters of the luminous components of a sample of 19 early-type galaxies. Such a correlation suppo…
A Dearth of Dark Matter in Ordinary Elliptical Galaxies
Aaron J. Romanowsky, Nigel D. Douglas, Magda Arnaboldi +5
The kinematics of the outer parts of three intermediate-luminosity elliptical galaxies have been studied using the Planetary Nebula Spectrograph. The galaxies' velocity dispersion…