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Bolzonella, M. Bondi, M. Radovich, M. Scodeggio, O. Cucciati, O. Ilbert, O. Le F\\`evre, P. Ciliegi, P. Franzetti, P. Memeo, P. Merluzzi, R. Merighi, R. Pell\\`o, R. Scaramella, S. Arnouts, S. Bardelli, S. Charlot, S. de la Torre, S. Foucaud, S. Paltani, S. Temporin, T. Contini, V. Le Brun, Y. Mellier","submitted_at":"2008-07-16T14:28:06Z","abstract_excerpt":"From the VIMOS VLT Deep Survey we use a sample of 6447 galaxies with I_{AB} < 24 to identify 251 pairs of galaxies, each member with a secure spectroscopic redshift, which are close in both projected separation and in velocity. We find that at z ~ 0.9, 10.9 +/- 3.2 % of galaxies with M_B(z) < -18-Qz are in pairs with separations dr < 20 kpc/h, dv < 500 km/s, and with dM_B < 1.5, significantly larger than 3.76 +/- 1.71 % at z ~ 0.5; we find that the pair fraction evolves as (1+z)^m with m = 2.49 +/- 0.56. 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Bongiorno, A. Cappi, A. Iovino, A. Mazure, A. Pollo, A. Zanichelli, B. Garilli, B. Marano, B. Meneux, C. Adami, C. Marinoni, D. Bottini, D. Maccagni, D. Vergani, E. Perez-Montero, E. Zucca, F. Lamareille, G. Vettolani, G. Zamorani, H.J. McCracken, I. Gavignaud, J. Brinchmann, L. de Ravel, L. Gregorini, L. Guzzo, L. Pozzetti, L. Tresse, M. Bolzonella, M. Bondi, M. Radovich, M. Scodeggio, O. Cucciati, O. Ilbert, O. Le F\\`evre, P. Ciliegi, P. Franzetti, P. Memeo, P. Merluzzi, R. Merighi, R. Pell\\`o, R. Scaramella, S. Arnouts, S. Bardelli, S. Charlot, S. de la Torre, S. Foucaud, S. Paltani, S. Temporin, T. Contini, V. Le Brun, Y. Mellier","submitted_at":"2008-07-16T14:28:06Z","abstract_excerpt":"From the VIMOS VLT Deep Survey we use a sample of 6447 galaxies with I_{AB} < 24 to identify 251 pairs of galaxies, each member with a secure spectroscopic redshift, which are close in both projected separation and in velocity. 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