219 citations · 1.4k across the 23 of their papers we have counts for
6 papers · 1 filter
Using NMAGIC to probe the dark matter halo and orbital structure of the X-ray bright, massive elliptical galaxy, NGC 4649
Payel Das, Ortwin Gerhard, Roberto H. Mendez +2
We create dynamical models of the massive elliptical galaxy, NGC 4649, using the N-body made-to-measure code, NMAGIC, and kinematic constraints from long-slit and planetary nebula…
The PN.S Elliptical Galaxy Survey: a standard LCDM halo around NGC 4374?
N. R. Napolitano, A. J. Romanowsky, M. Capaccioli +10
As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysi…
Counter-dispersed slitless-spectroscopy technique: planetary nebula velocities in the halo of NGC 1399
Emily McNeil, Magda Arnaboldi, Ken Freeman +3
Using a counter-dispersed slitless spectroscopy technique, we detect and measure the line-of-sight velocities of 187 planetary nebulae (PNe) around one of the nearest cD galaxies,…
Steepening mass profiles, dark matter and environment of X-ray bright elliptical galaxies
Payel Das, Ortwin Gerhard, Eugene Churazov +1
We use a new non-parametric Bayesian approach to obtain the most probable mass distributions and circular velocity curves along with their confidence ranges, given deprojected dens…
Comparison of an approximately isothermal gravitational potentials of elliptical galaxies based on X-ray and optical data
E. Churazov, S. Tremaine, W. Forman +6
We analyze six X-ray bright elliptical galaxies, observed with Chandra and XMM-Newton, and approximate their gravitational potentials by isothermal spheres phi(r)=v_c^2 ln(r) over…
The edge of the M87 halo and the kinematics of the diffuse light in the Virgo cluster core
Michelle Doherty, Magda Arnaboldi, Payel Das +7
We present high resolution FLAMES/VLT spectroscopy of intracluster planetary nebula (ICPN) candidates, targeting three new fields in the Virgo cluster core with surface brightness…