\begin{table}%t2 \par \caption {\label{table:candidates}Characteristics of the 27 microlensing candidates. For those events that have a better fit than the point-like point-source constant speed microlensing fit (the so-called standard fit), we also provide the standard fit parameters. } %\centerline { %\scriptsize \begin{tabular}{ccc cccccccc} \hline \hline Candidate & Field & \multicolumn{2}{c}{$\alpha ^{\circ},~~\delta ^{\circ}~(J2000)$} & $I_C$ ($V_J-I_C$) & $t_0$ (days) & $t_{\rm E}$ (days) & $u_0$ & $\chi^2/\rm d.o.f$ & $\tau (10^{-6})$ & Note \\ \hline \multicolumn{10}{c}{\boldmath $\gsct$} & \\ {\bf GSA1} & 200 & 277.2888 & --14.2528 & 18.3 (3.1) & 301.2 $\pm$ 0.1 & 64.0 $\pm$ 1.2 & .043 $\pm$ .0010& 299.7/435& 0.146 & \\ % GSA8 & 200 & 18:27:13.0 & -15:01:52 & 16.4 (3.6) & 3097.3$\pm$ 1.2 & 37.7$\pm$ 1.6 & .000$\pm$*****& 778.7/540& XXXXX & (3) \\ {\bf GSA8} & 200 & 276.8042 & --15.0311 & 16.6 (3.7) & 996.9 $\pm$ 0.1 & 40.6 $\pm$ 1.0 & .145 $\pm$ .003& 981./533& 0.114 & (1) \\ & & & \multicolumn{2}{r}{Standard fit parameters:} & 993.0 $\pm$ 0.1 & 35.2 $\pm$ 0.7 & .155 $\pm$ .002 & 1400./535& & \\ {\bf GSA9} & 200 & 277.1750 & --15.1644 & 18.8 (2.8) & 1760.3 $\pm$ 1.7 & 57.9 $\pm$ 3.6 & .482 $\pm$ .0158& 262.9/565& 0.142 & \\ {\bf GSA10} & 200 & 277.2813 & --14.8931 & 18.1 (2.3) & 1806.1 $\pm$ 0.8 & 24.6 $\pm$ 1.3 & .574 $\pm$ .0179& 237.9/596& 0.081 & \\ {\bf GSA11} & 201 & 278.1650 & --14.1094 & 18.8 (2.5) & 1725.3 $\pm$ 0.4 & 44.3 $\pm$ 1.4 & .187 $\pm$ .0049& 367.2/558& 0.116 & \\ {\bf GSA12} & 203 & 278.5875 & -13.9794 & 17.1 (1.8) & 1378.6 $\pm$ 0.2 & 50.1 $\pm$ 0.7 & .225 $\pm$ .0030& 89.3/359& 0.123 & \\ GSA13 & 203 & 278.9404 & --14.5803 & 17.2 (1.9) & 313.9 $\pm$ 1.2 & 37.2 $\pm$ 2.1 & .898 $\pm$ .0153& 244.9/617& -- & \\ GSA14 & 204 & 278.4388 & --12.8678 & 16.7 (2.2) & 1637.7 $\pm$ 3.4 & 68.4 $\pm$ 3.7 & .785 $\pm$ .0097& 421.2/392& -- & (2) \\ \hline \multicolumn{10}{c}{\boldmath $\bsct$} & \\ {\bf GSA15} & 301 & 281.0654 & --6.0339 & 18.3 (3.5) & 1399.8 $\pm$ 1.4 & 72.2 $\pm$ 2.8 & .337 $\pm$ .0126& 212.2/411& 0.110 & edge\\ GSA16 & 301 & 280.7646 & --6.7583 & 16.4 (3.1) & 1997.0 $\pm$ 3.2 & 60.6 $\pm$ 4.0 & .796 $\pm$ .0141& 341.8/361& -- & \\ {\bf GSA17} & 302 & 281.3950 & --7.8867 & 16.4 (1.7) & 1947.2 $\pm$ 3.8 & 50.0 $\pm$ 2.4 & .532 $\pm$ .1079& 156.9/400& 0.096 & \\ {\bf GSA18} & 304 & 282.2879 & --7.2500 & 16.1 (2.1) & 1718.7 $\pm$ 0.1 & 55.0 $\pm$ 2.0 & .137 $\pm$ .0009& 133./514& 0.098 & (3) \\ & & & \multicolumn{2}{r}{Standard fit parameters:} & 1718.4 $\pm$ 0.1 & 58.0 $\pm$ 0.3 & .137 $\pm$ .0009& 155.6/516& & \\ \hline \multicolumn{10}{c}{\boldmath $\gnor$} & \\ {\bf GSA2} & 400 & 242.9592 & --52.9464 & 18.6 (2.3) & 534.4 $\pm$ 0.2 & 98.3 $\pm$ 0.9 & .342 $\pm$ .002& 973.4/934 & 0.059 & (4) \\ & & & \multicolumn{2}{r}{Standard fit parameters:} & 533.6 $\pm$ 0.5 & 137.8 $\pm$ 2.6 & .233 $\pm$ .0029&1196.5/937& & \\ {\bf GSA19} & 401 & 244.1379 & --52.0272 & 15.5 (5.1) & 2367.7 $\pm$ 1.3 & 90.4 $\pm$ 3.0 & .043$\pm$ .025 &893./880& 0.063 & (5) \\ % & & & \multicolumn{2}{|r|}{Standard fit parameters:}& 4481.2$\pm$ 0.1 & 91.3$\pm$ 0.7 & .000$\pm$ .5356&1462.5/888& & \\ & & & \multicolumn{2}{r}{Standard fit parameters:}& 2373.5 $\pm$ 0.1 & 93.1 $\pm$ 0.7 & .022 $\pm$ .007&1388.5/888& & \\ % GSA20 & 402 & 16:15:06.2 & -52:58:12 & 16.3 (1.3) & 4594.6$\pm$ 0.3 & 46.3$\pm$ 0.7 & .565$\pm$ .0050& 712.4/698& XXXXX & (2) \\ {\bf GSA20} & 402 & 243.7758 & --52.9700 & 16.4 (1.3) & 2465.5 $\pm$ 1.0 & 40.$\pm$ 5.0 & .72 $\pm$ .02& 414./696& 0.039 & (6) \\ & & & \multicolumn{2}{r}{Standard fit parameters:} & 2487.1$\pm$ 0.3 & 46.3 $\pm$ 0.7 & .565$\pm$ .0050& 712.4/698& & \\ % GSA21 & 404 & 16:17:13.5 & -53:06:36 & 16.7 (2.5) & 3694.7$\pm$ 0.0 & 39.1$\pm$ 0.2 & .037$\pm$ .0007&1884.4/567& XXXXX & (3) \\ {\bf GSA21} & 404 & 244.3063 & --53.1100 & 16.8 (2.7) & 1587.3 $\pm$ .03 & 74. $\pm$ 3.0 & .0142 $\pm$ .0008&259./565& 0.077 & (7) \\ & & & \multicolumn{2}{r}{Standard fit parameters:} & 1587.2 $\pm$ .03 & 39.1 $\pm$ 0.2 & .037 $\pm$ .0007&1884.4/567& & \\ {\bf GSA22} & 404 & 244.4263 & --54.0508 & 18.4 (2.0) & 2182.4 $\pm$ 0.2 & 26.6 $\pm$ 1.1 & .048 $\pm$ .0180& 429.5/742& 0.031 & \\ {\bf GSA23} & 404 & 245.1208 & --53.9825 & 18.3 (1.7) & 1573.8 $\pm$ 3.8 & 78.5 $\pm$ 5.7 & .542 $\pm$ .0152& 522.3/784& 0.062 & corner\\ GSA24 & 406 & 246.5442 & --54.0394 & 18.0 (1.9) & 2002.5 $\pm$ 1.4 & 55.5 $\pm$ 2.6 & .720 $\pm$ .0158& 579.4/786& -- & \\ {\bf GSA25} & 408 & 247.6917 & --53.9281 & 21.1 (1.4) & 850.9 $\pm$ .03 & 67.6 $\pm$ 2.9 & .003 $\pm$ .0001& 876.2/771& 0.057 & (8) \\ {\bf GSA3} & 409 & 244.1129 & --54.6303 & 17.7 (1.4) & 696.0 $\pm$ 2.0 & 60.4 $\pm$ 3.0 & .615 $\pm$ .0102& 606.7/1090& 0.051 & \\ {\bf GSA26} & 411 & 241.8729 & --55.3814 & 17.8 (2.2) & 1642.1 $\pm$ 0.3 & 23.2 $\pm$ 0.8 & .504 $\pm$ .0138& 441.5/759& 0.030 & \\ {\bf GSA27} & 411 & 242.4846 & --55.2292 & 18.3 (1.7) & 2193.8 $\pm$ 0.1 & 6.8 $\pm$ 0.4 & .210 $\pm$ .0068& 433.6/831& 0.022 & \\ \hline \multicolumn{10}{c}{\boldmath $\tmus$} & \\ {\bf GSA28} & 501 & 202.2838 & --64.2750 & 19.3 (3.7) & 1992.2 $\pm$ 0.4 & 205. $\pm$ 20.0 & .029 $\pm$ .004& 717/499& 0.431 & (9) \\ & & & \multicolumn{2}{r}{Standard fit parameters:} & 1992.0 $\pm$ 0.4 & 87.3 $\pm$ 3.0 & .094 $\pm$ .0046& 868.5/500& & \\ {\bf GSA29} & 502 & 204.0683 & --63.7117 & 19.3 (2.5) & 1229.7 $\pm$ 0.3 & 74.2 $\pm$ 2.7 & .082 $\pm$ .0042& 161.7/354& 0.166 & \\ {\bf GSA30} & 505 & 199.2942 & --64.2592 & 16.5 (2.7) & 2396.9 $\pm$ 0.1 & 12.4 $\pm$ 0.2 & .062 $\pm$ .0023& 792.0/856& 0.073 & \\ \hline \hline \multicolumn{10}{c}{\bf{Uncertain candidate}} & \\ {\it GSAu1} & 202 & 278.0371 & --13.2851 & 18.1 (2.9) & 1695.8$\pm$ 6.9 & 409.3 $\pm$ 20.9 & .708 $\pm$ .0155& 426.9/613& -- & \\ \hline \end{tabular}} \smallskip -- Names in bold type correspond to events selected for the optical depth and duration analysis (with $u_0<0.7$). \newline -- $I_C$ ($V_J-I_C$) are the fitted unmagnified magnitudes of the lensed object (including the contribution of a possible blend). \newline %Fit combine sans tenir compte du blend -- $t_0$ is the time of maximum magnification, given in HJD-2~450~000. \newline -- $t_{\rm E}$ is the Einstein disk crossing time, in days. \newline -- $u_0$ is the dimensionless impact parameter. \newline -- $\chi^2/\rm d.o.f.$ corresponds to the best microlensing fit. \newline -- $\tau$ is the individual contribution of each event to the optical depth towards the corresponding target. In the case of ``non standard'' events, we use the $t_{\rm E}$ value obtained from the best (non standard) fit and the efficiency evaluated at $t_{\rm E}$ of the standard fit (see text) for the calculation of~$\tau$. \par {\bf Notes:} %\newline {\bf (1) GSA8}: Blended; $C_R=1.00\pm 0.03,\ C_B=0.68 \pm 0.02$; lensed star has $I_C^*\ (V_J^*-I_C^*)=16.6\ (4.4)$. {\bf (2) GSA14}: light curve exhibits typical features of a binary lens system. Given the small number of measurements with significant magnification, no reliable analysis of the shape can be performed. {\bf (3) GSA18}: parallax; projected Einstein radius in the solar plane $\tilde{r}_{\rm E}=12.5\pm 7.0 ~\rm AU$. {\bf (4) GSA2}: described in Paper~I. Found at that time as the first candidate for a binary lensed source (Xallarap). {\bf (5) GSA19}: Xallarap and blend; the best fit is performed ignoring the 3 most magnified measurements, that are affected by the non-linearity of the CCD. $\ C_R=1.,\ C_B=0.160\pm 0.013$; lensed star has $I_C^*\ (V_J^*-I_C^*)=15.5\ (8.4)$. The light curve distorsion could be due to the face-on circular orbiting of the source around the center-of-mass of a system including a non luminous object, with period $P_0=294.\pm 47.~\rm days$, and with a projected orbit radius of $\rho=ax/R_{\rm E}=0.081\pm 0.023$, where~$a$ is the orbit radius and $x=D_{\rm lens}/D_{\rm source}$. See also text. {\bf (6) GSA20}: parallax; $\tilde{r}_{\rm E}=0.94\pm 0.07 ~\rm AU$. {\bf (7) GSA21}: blended; $C_R=0.53\pm 0.02,\ C_B=0.34\pm 0.02$; lensed star has $I_C^*\ (V_J^*-I_C^*)=17.5\ (3.5)$. {\bf (8) GSA25}: an improbable configuration, but a genuine one (very small $u_0$ on a very faint star). {\bf (9) GSA28}: blended; $C_R=0.30\pm 0.03,\ C_B=1$; lensed star has $I_C^*\ (V_J^*-I_C^*)=20.6\ (1.5)$. The $\chi^2/\rm d.o.f.$ of the fit is affected by an underestimate of the errors due to bright neighboring stars. \par \end{table}