Stellar mass gradients towards filaments detected in 3D at 5.5σ in the lightcone (left) and in 2D at 2σ in the CFHTLS-like mock (right). We split the galaxy catalogue into three mass bins for which we compute the distribution of the galaxy distances to the skeleton after removing galaxies close to nodes (see text for details). Red is for 11 < log M*/M⊙ < 12, yellow for 10 < log M*/M⊙ < 11, and blue for 9.5 < log M*/M⊙ < 10. In each panel, the top distribution is the PDF of the distances to the skeleton. The filled areas around the curves represent the 68% confidence limits computed from 1000 bootstrap re-samplings of the distributions. The bottom panels show the CDF. The vertical lines and associated error bars are the median and error on the median of each distribution.
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