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$\begin{figure} \par\includegraphics[width=8.5cm,clip]{2M1207bfig1.ps} \end{figure}$ Figure 1: VLT/NACO measurements (3 full circles with uncertainties) of the offset positions of 2M1207 b relative to A, obtained on 27 April 2004, 5 February 2005 and 31 March 2005. The expected variation of offset positions, if b is a background object, is shown (solid line), based on a distance of 70 pc, a proper motion of $(\mu _{\alpha },\mu _{\delta })=(-78, -24)$ mas yr^-1 for A and the initial offset position of b from A. The 2 empty circles give the corresponding expected offset positions of a background object on 5 February 2005 and 31 March 2005, with total uncertainties, which are the quadratic sum of individual uncertainties (distance, proper motion of A and initial position of b from A).
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In the text

$\begin{figure} \par\includegraphics[width=8.5cm,clip]{2M1207bfig2.ps} \end{figure}$ Figure 2: Offset positions in terms of separation (Top) and position angle (Bottom) of 2M1207 b from A, in 27 April 2004, 5 February 2005 and 31 March 2005 (full circles with uncertainties). The expected variation of offset positions, if b is a background object, is shown (solid line), based on a distance of 70 pc, a proper motion of $(\mu _{\alpha },\mu _{\delta })=(-78, -24)$ mas yr^-1 for A and the initial offset position of b from A. We have also reported the associated uncertainties (shaded region) and the different contributions (distance, proper motion, initial offset position) in dotted lines.
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In the text