Table 4: Table of the arc candidates shown in Fig.19. "cc'' denotes the cluster centre, the length-to-width ratio l/w is calculated with the help of $\lambda _1$, and $\lambda _2$ (the second order moments of the light distribution) and is measured on the WFPC2 images as it is not affected by atmospheric blurring. A value of =0.75 was chosen for both, the DETECT_THRESH and ANALYSIS_THRESH due to the shallowness of the image. The magnitudes are instrumental WFI magnitudes in the Vega system. All objects are photometrised using SExtractor's MAG_AUTO.
Arc candidate Angular distance Projected dist. Length l l/w Filter
in Fig. 19 to cc to cc [kpc] [ $\hbox{$^{\prime\prime}$ }$ ] WFPC2 B [mag] V [mag] R [mag]
A1 $\sim $27 $\sim $117 2 $.\!\!^{\prime\prime}$3 5.1 $24.49\pm0.28$ $23.87\pm0.06$ $22.73\pm0.01$
A2 $\sim $20 $\sim $87 2 $.\!\!^{\prime\prime}$0 5.6 $23.89\pm0.22$ $23.07\pm0.04$ $22.06\pm0.01$
A3 $\sim $23 $\sim $100 1 $.\!\!^{\prime\prime}$4 2.1 $24.20\pm0.21$ $23.68\pm0.05$ $22.71\pm0.01$
A4 $\sim $26 $\sim $113 1 $.\!\!^{\prime\prime}$1 1.9 $24.64\pm0.22$ $24.08\pm0.05$ $23.64\pm0.02$


Source LaTeX | All tables | In the text