322 citations · 2.9k across the 79 of their papers we have counts for
5 papers · 1 filter
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…
Narrow band survey for intragroup light in the Leo HI cloud. Constraints on the galaxy background contamination in imaging surveys for intracluster planetary nebulae
Nieves Castro-Rodriguez, J. Alfonso L. Aguerri, Magda Arnaboldi +4
We have observed emission line objects located in a 0.26 deg^2 field in the M96 (Leo) group, coincident with the intergalactic HI cloud. The emission line objects were selected usi…