Reproduction of the radial profile of Δμ_TAN for the N-rich and N-poor groups of Fe-rich stars (top) in ﹩\omega \mathrm{Cen}﹩. In the bottom panels, ﹩{\rm{\Delta }}{\mu }_{\alpha }\cos \delta ﹩ and ﹩{\rm{\Delta }}{\mu }_{\delta }﹩ are plotted as a function of the position angle θ for stars in regions R₁ and R₂ defined in the top panel. The sine functions that provide the best fit with the observations of N-poor and N-rich stars are represented with red and blue lines, respectively.