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Fig. 7


Left panel: trajectory of α Cen A relative to S5 (orange curve) on the NACO image obtained on 27 March 2016. The position of the Einstein ring of α Cen A is represented with a light blue circle at the time of the closest approach, and the uncertainty on the impact parameter is represented with blue segments crossing at S5’s position. Right panel: photometry of S5 (red dots) compared to a Kurucz SED with θLD = 0.47 mas, Teff = 3500 K (blue curve) reddened with E(BV) = 6.5 (green curve).

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