Hidden figures in the sky - Evolution of low-surface-brightness galaxies from a hydrodynamical perspective

Open Access

Fig. 4

$λ_{2 R_{1 / 2, *}}$ ${\lambda _{2{R_{1/2,*}}}}$ on the top and ${(υ_{rot} / σ)}_{2 R_{1 / 2, *}}$ ${\left( {{\upsilon _{{\rm{rot}}}}/\sigma } \right)_{2{R_{1/2,*}}}}$ on the bottom as a function of $ϵ_{2 R_{1 / 2, *}}$ ${_{2{R_{1/2,*}}}}$ at ɀ = 0. See Fig. 1 for the colour and symbol coding, and refer to Section 2.2 for statistical definitions. The red dashed line represents the empirical boundary separating the rotation-supported sub-population from the dispersion-supported one.

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