Table 6: Mass modelling results for different light profile representations. The modelled projected half-light radius $r_{\rm h,p}$, central velocity dispersion $\sigma _0$, global velocity dispersion $\sigma $, mass and mass-to-light ratio in the V-band are given. The adopted surface brightness profile parameters are taken from Evstigneeva et al. (2006). Radii ($R_{\rm b}$, $R_{\rm e}$, $R_{\rm c}$ and $R_{\rm t}$) are in pc; $\mu _{\rm0,King}$ and $\mu _{e,\rm Sers.}$ are in mag arcsec-2 in the V band. In the last rows the results for the virial mass estimator are given. The effective radius $R_{\rm eff}$ was taken from Table 10 of Evstigneeva et al. (2006), the global velocity dispersion from the generalized King models and King + Sersic models in two-component fits case. Also the ellipticies ( $\epsilon = 1-b/a$) from Evstigneeva et al. are shown for reference. The values in bold face were adopted for further analyses.
Model             $r_{\rm h,p}$ $\sigma _0$ $\sigma $ $M_{\rm mod}$ $M_{\rm mod}/L_V$
              [pc] [km s-1] [km s-1] $\times10^7M_\odot$  
Nuker: $R_{\rm b}$ $\alpha $ $\beta $ $\gamma$              
UCD1 36.7 0.34 3.03 0.91 ... ... $39.1\pm3.0$ $51.4\pm3.0$ $25.2\pm2.0$ $2.59\pm0.32$ $4.03\pm0.53$
UCD2 4.3 0.73 2.38 0.58 ... ... $39.4\pm3.0$ $33.6\pm1.0$ $20.4\pm2.0$ $2.39\pm0.38$ $3.45\pm0.59$
UCD3 318.7 1.90 7.04 1.10 ... ... $89.2\pm8.0$ $33.0\pm1.8$ $22.7\pm3.3$ $9.06\pm2.25$ $3.95\pm1.00$
UCD4 7.3 20.00 2.13 0.88 ... ... $50.4\pm4.0$ $36.4\pm1.2$ $23.6\pm3.6$ $4.13\pm1.02$ $5.06\pm1.31$
Sersic: $R_{\rm e}$ n                  
UCD1 36.9 9.9 ... ... ... ... $33.1\pm3.5$ $47.3\pm4.5$ $26.1\pm3.0$ $2.59\pm0.48$ $4.03\pm0.77$
UCD2 26.6 6.8 ... ... ... ... $25.7\pm2.5$ $35.5\pm0.8$ $21.8\pm2.5$ $1.93\pm0.39$ $2.79\pm0.58$
UCD4 24.1 5.5 ... ... ... ... $23.8\pm2.5$ $40.0\pm1.1$ $26.3\pm4.8$ $2.91\pm0.96$ $3.56\pm1.22$
King, $\alpha =2$: $R_{\rm c}$ Rt c                
UCD1 1.8 5761.2 3.51 ... ... ... $49.2\pm3.5$ $40.7\pm1.0$ $24.3\pm4.0$ $4.17\pm1.04$ $6.49\pm1.61$
UCD2 2.3 1457.5 2.80 ... ... ... $28.3\pm1.5$ $31.5\pm0.8$ $21.2\pm3.0$ $2.40\pm0.58$ $3.47\pm0.86$
UCD4 2.8 987.6 2.55 ... ... ... $26.1\pm1.3$ $36.4\pm1.3$ $25.6\pm5.1$ $3.50\pm1.22$ $4.29\pm1.55$
King, var. $\alpha $: $R_{\rm c}$ Rt c $\alpha $              
UCD1 1.8 378.0 2.32 0.74 ... ... $22.4\pm1.0$ 41.3 $\pm$ 1.0 27.1 $\pm$ 1.8 3.21 $\pm$ 0.36 4.99 $\pm$ 0.60
UCD2 2.2 487.1 2.35 1.23 ... ... $23.2\pm1.0$ 31.3 $\pm$ 0.6 21.6 $\pm$ 1.8 2.18 $\pm$ 0.31 3.15 $\pm$ 0.49
UCD4 3.0 4501.2 3.18 3.32 ... ... $29.6\pm2.0$ 37.3 $\pm$ 0.6 25.0 $\pm$ 3.4 3.73 $\pm$ 0.86 4.57 $\pm$ 1.11
King+Sersic: $R_{\rm c}$ Rt $\mu _{\rm0,King}$ $R_{\rm e}$ n $\mu _{e,\rm Sers.}$          
UCD3 3.6 119.2 15.74 106.6 1.34 21.13 $89.9\pm6.0$ 29.3 $\pm$ 1.2 22.8 $\pm$ 3.1 9.45 $\pm$ 2.20 4.13 $\pm$ 0.98
UCD5 4.0 30.7 15.13 134.5 6.9 24.04 $30.0\pm2.5$ 28.7 $\pm$ 0.8 18.7 $\pm$ 3.2 1.80 $\pm$ 0.50 3.37 $\pm$ 0.85
FCC303 1.2 2403.9 13.32 696.3 0.6 22.81 $668.3\pm12.$ 37.8 $\pm$ 3.5 16.5 $\pm$ 3.9 33.15 $\pm$ 9.53 2.47 $\pm$ 0.72
Virial mass estimator:       $\epsilon$   $R_{\rm eff}$ $\sigma $ $M_{\rm vir}$ $M_{\rm vir}/L_V$
UCD1 ... ... ... ... ... 0.18 ... 22.4 $27.1\pm1.8$ $3.73\pm0.52$ $5.70\pm0.84$
UCD2 ... ... ... ... ... 0.01 ... 23.1 $21.6\pm1.8$ $2.44\pm0.42$ $3.47\pm0.62$
UCD3 ... ... ... ... ... 0.03 ... 92.2 $22.8\pm3.1$ $10.87\pm3.04$ $4.66\pm1.32$
UCD4 ... ... ... ... ... 0.05 ... 29.5 $25.0\pm3.4$ $4.18\pm1.17$ $5.03\pm1.43$
UCD5 ... ... ... ... ... 0.24 ... 31.2 $18.7\pm3.2$ $2.47\pm0.87$ $4.54\pm1.61$
FCC303 ... ... ... ... ... 0.03 ... 660.0 $16.5\pm3.9$ $40.74\pm19.3$ $2.98\pm1.42$


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