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Fig. 1
Chi2 maps for NACO-SAM H-band closure-phase data (6+7 Dec. 2012): location of GG Tau Ab1 (a)) and Ab2 (b)) around the primary star GG Tau Aa, and for PIONIER (c)) H-band closure-phase data for Ab2 location around Ab1, with VLTI (u,v) sampling in the inset.
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