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Fig. 2


Double-colour diagrams for galaxies more massive than 3 × 109 M, selected by their specific SFR: higher (blue) and lower (red) than 10-11/yr; larger symbols are for SIM, dots for the SAM. Solid lines are given by the fitting formulae that separate the two regions: UV = 0.5(VK) − 0.5 for 0 ≤ z< 1, UV = 0.5(VK) − 0.6 for 1 ≤ z ≤ 1.5, UV = 0.45(VK) − 0.54 for 1.5 <z ≤ 2.

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