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Fig. 1.

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Visualization of the basins of attraction of Laniakea (in red) and the five superclusters that are now dynamically defined as watershed in the same way, namely Apus, Hercules, Lepus, Perseus-Pisces and Shapley, as well as the basins identified further away in the SDSS area (both in purple). The basins shown are obtained from the ungrouped CF4 velocity field. Each galaxy from the CF4 catalog is positioned at its redshift and represented by tiny dots, red for galaxies part of the Laniakea basin of attraction and purple otherwise. Streamlines are also computed for each galaxy with the same color code. The gradient of color is related to the density of streamlines. Streamlines colored white or yellow indicate a high density of streamlines. Each identified basin of attraction is annotated by the associated structure name. For reference, the three supergalactic cartesian orientation axes SGX, SGY, SGZ are drawn in the bottom left, represented respectively by red, green and blue arrows of size 50 Mpc h−1.

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