Speaker
Pascal Steger
(E)
Description
We propose a new non-parametric method to determine the mass
distribution in spherical systems. A high dimensional parameter space
encoding tracer density, line of sight velocity anisotropy and total
mass density is sampled using MultiNest.
Without assumptions on the functional form of any of these profiles,
we can reproduce reliably the total mass density and velocity anisotropy
profile of mock dwarf galaxies.
We show applications to observed dwarf galaxies, and point out
what data quality is required to measure the central density profile.
Summary
A new non-parametric mass modelling method for spherical systems is verified with mock data, and applied to dwarf spheroidal galaxies.
Author
Pascal Steger
(E)
