Fig. 1.
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HST/ACS image of RXJ1131−1231 in the F814W band. The four quasar images are labeled with A, B, C, and D. The central deflector is marked with G, of which we are measuring the spatially resolved velocity dispersion. An arrow points to the nearby satellite S, which we mask out in the velocity dispersion measurement. The north and east directions and 1″ scale are also illustrated.
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