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Fig. 2.
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Distribution of fourth-order multipoles in the light of local elliptical galaxies from Hao et al. (2006). The two panels display the distribution for the normalised (a4/a)conv and (b4/a)conv convention (left) and our a4 convention used in this paper (right), for θE = 2″ and q = 0.8 (see Eqs. (1) and (2)).
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