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Fig. 9.

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Relations between cosmological redshift z and angular length ϕ for six giants of different projected lengths lp. Due to the expansion of the Universe, there is a minimum angular length for each lp. If one defines giants as RGs with lp ≥ lp, GRG = 0.7 Mpc, all giants have an angular length of 1.3′ or above. If one instead defines giants as RGs with lp ≥ lp, GRG = 1 Mpc, all giants have an angular length of 1.9′ or above.

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