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Fig. 10

image

Residuals of the fit for the mass determination of groups with two to four members depending on the fitting parameter. Top row: residuals for 2MRS data. Bottom row: residuals for SDSS data. First column: residuals as a function of the luminosity (Ks band for 2MRS, r band for SDSS). Second column: residuals as a function of the luminosity distance. Third column: residuals as a function of the group velocity dispersion. Forth column: residuals as a function of the group radius.

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