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Fig. 3.


F814W HST ACS (top) and i′-band Suprime-Cam (bottom) images of galaxies ID 345 (south) and ID 473 (north) in cluster CGr32. Other cluster members are shown with green circles. Contours show the [O II] flux map obtained using a Gaussian smoothing of 3 pixels FWHM at a level of Σ([OII]) = 1.5, 3.3, 7.4, 16.3, 36.1, 80.0 × 10−18 erg s−1 cm−2 arcsec−2. Both images (oriented as in the sky, north is up, east on the left) show the lack of any optical counterpart along the tail.

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