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Negrello, M. W. L. Smith, P. Cox, P. Temi, P. van der Werf, R. Auld, R. Gavazzi, R. Hopwood, R. Ivison, R. Lupu, R. Neri, S. A. Eales, S. Bussmann, S. Dye, S. Maddox, S. Serjeant, Y. Gao","submitted_at":"2013-01-28T17:23:21Z","abstract_excerpt":"Using IRAM PdBI we report the detection of H2O in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel H-ATLAS survey. The sources are detected either in the 2_{02}-1_{11} or 2_{11}-2_{02} H_2O emission lines with integrated line fluxes ranging from 1.8 to 14 Jy.km/s. The corresponding apparent luminosities are mu x L_H2O ~ 3-12 x 10^8 Lo, where mu is the lensing magnification factor (3 < mu < 12). 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