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We modify the chemo-dynamical code GEAR to simulate the impact ofself-interacting dark matter on the observable quantities of 19 low mass dwarfgalaxies with a variety star forming properties. We employ a relatively high,velocity independent cross-section of $\sigma/m = 10$cm$^2$/g and extract, inaddition to integrated quantities, the total mass density profile, theluminosity profile, the line-of-sight velocities, the chemical abundance andthe star formation history. We find that despite the creation of large cores atthe centre of the dark matter haloes, the impact of SIDM on the observablequantities of quenched galaxies is indiscernible, dominated mostly by thestochastic build up of the stellar matter. As such we conclude that it isimpossible to make global statements on the density profile of dwarf galaxiesfrom single or small samples. Although based mostly on quenched galaxies, thisfinding supports other recent work putting into question the reliability ofinferred cored density profiles that are derived from observed line-of-sightvelocities.

The impact of cored density profiles on the observable quantities of dwarf spheroidal galaxies