Table 3: Cluster structural parameters.
Cluster $1\hbox{$^\prime$ }$ $\sigma_{\rm bg}$ $\sigma_0$ $\delta_{\rm c}$ $R_{\rm c}$ $R_{\rm RDP}$ $R_{\rm c}$ $R_{\rm RDP}$
  (pc) $\rm (stars~arcmin^{-2})$ $\rm (stars~arcmin^{-2})$   ($^\prime $) ($^\prime $) (pc) (pc)
(1) (2) (3) (4) (5) (6) (7) (8) (9)
FSR 1716$^\dagger$ 0.216 $10.5\pm1.0$ $16.2\pm4.8$ $2.6\pm0.5$ $0.88\pm0.23$ $6.0\pm0.6$ $0.19\pm0.05$ $1.3\pm0.2$
FSR 1716$^\ddagger$ 0.653 $10.5\pm1.0$ $16.2\pm4.8$ $2.6\pm0.5$ $0.88\pm0.23$ $6.0\pm0.6$ $0.57\pm0.15$ $3.9\pm0.4$
Cz 23 0.728 $2.8\pm0.1$ $16.5\pm4.7$ $7.0\pm1.7$ $0.49\pm0.04$ $4.9\pm0.7$ $0.36\pm0.08$ $3.6\pm0.4$
Notes. Column 2: arcmin to parsec scale. King profile is expressed as $\sigma(R)=\sigma_{\rm bg}+\sigma_0/(1+(R/R_{\rm c})^2)$. To minimise degrees of freedom in RDP fits, $\sigma_{\rm bg}$ was kept fixed (measured in the respective comparison fields) while $\sigma_0$ and $R_{\rm c}$ were allowed to vary. Column 5: cluster/background density contrast ( $\delta_{\rm c}=1+\sigma_0/\sigma_{\rm bg}$), measured in CM-filtered RDPs. Columns 6-9, core and cluster radii in angular and absolute units. Parameters of FSR 1716 are derived for the OC ($\dagger$) or GC ($\ddagger$) interpretation (Sect. 5).

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