The connection between surface brightness and satellite systems for central galaxies through IllustrisTNG

Open Access

Fig. 1.

Mean surface brightness (μ_r^cen) as a function of the stellar mass ( $M_{⋆}^{cen}$ $Mathematical equation: $ M^{\mathrm{cen}}_{\star} $$ ) for all central galaxies with $M_{⋆}^{cen} = 10^{10} - 10^{11} M_{⊙}$ $Mathematical equation: $ M^{\mathrm{cen}}_{\star} = 10^{10} {-} 10^{11} \,{M}_{\odot} $$ , coloured by $κ_{rot}^{cen}$ $Mathematical equation: $ \kappa^{\mathrm{cen}}_{\mathrm{rot}} $$ . The horizontal dashed red lines indicate the threshold to select HSBGs and LSBGs.

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