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Dark matter distribution in the Draco dwarf from velocity moments
Ewa L. Lokas, Gary A. Mamon, Francisco Prada
We study the distribution of dark matter in the Draco dwarf spheroidal galaxy by modelling the moments of the line-of-sight velocity distribution of stars obtained from new velocit…
DENIS detections of highly obscured galaxies in the area around PKS1343-601
Anja C. Schroeder, Renee C. Kraan-Korteweg, Gary A. Mamon +1
We present results of a search for galaxies around the highly obscured giant radio galaxy PKS1343-601 using the near-infrared DENIS survey. We compare our findings with surveys in…
Dark matter in elliptical galaxies: II. Estimating the mass within the virial radius
Gary A. Mamon, Ewa L. Lokas
Elliptical galaxies are modelled with a a 4-component model: Sersic stars, LCDM dark matter (DM), hot gas and central black hole. DM is negligible in the inner regions, which are d…
Dark matter in elliptical galaxies: I. Is the total mass density profile of the NFW form or even steeper?
Gary A. Mamon, Ewa L. Lokas
Elliptical galaxies are modelled as Sersic luminosity distributions with density profiles (DPs) for the total mass adopted from the DPs of haloes within dissipationless LambdaCDM N…
Breaking the mass / anisotropy degeneracy in the Coma cluster
Gary A. Mamon, Ewa L. Lokas, Teresa Sanchis
We provide the first direct lifting of the mass/anisotropy degeneracy for a cluster of galaxies, by jointly fitting the line of sight velocity dispersion and kurtosis profiles of t…
The 6dF Galaxy Survey: Samples, Observational Techniques and the First Data Release
D. Heath Jones, Will Saunders, Matthew Colless +20
The 6dF Galaxy Survey (6dFGS) aims to measure the redshifts of around 150,000 galaxies, and the peculiar velocities of a 15,000-member sub-sample, over almost the entire southern s…
The origin of HI-deficiency in galaxies on the outskirts of the Virgo cluster. II. Companions and uncertainties in distances and deficiencies
T. Sanchis, G. A. Mamon, E. Salvador-Sole' +2
The origin of the deficiency in neutral Hydrogen of 13 spiral galaxies lying in the outskirts of the Virgo cluster is reassessed. If these galaxies have passed through the core of…