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Fig. 6.
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Distribution of Ωϕ/Ωz for all stars in the Helmi streams, with clump-hiL and clump-loL indicated in red and blue, respectively. The sum of two Gaussians fits their distributions well. Clump-hiL stars correspond to the tight component centred on Ωϕ/Ωz = 0.968 and clump-loL to the more diffuse component.
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