Table 2: Estimated star cluster surface densities at different elliptical annuli from sample in I filter.

Range (pix)
NPTS NPTSw $\rho_0$ (kpc-2) $N_{\rm GC}$(range) $N_{\rm GC}$ (cum.)
0-150 * * 2.20 $\pm$ 0.44 789.2 $\pm$ 157.8 789.2 $\pm$ 157.8
150-250 79 156.0 1.47 $\pm$ 0.30 937.5 $\pm$ 191.3 1726.7 $\pm$ 349.1
250-350 155 323.4 0.37 $\pm$ 0.06 354.0 $\pm$ 57.4 2080.7 $\pm$ 406.5
350-500 191 353.2 0.27 $\pm$ 0.04 548.9 $\pm$ 81.3 2629.6 $\pm$ 487.8
500-650 163 357.6 0.13 $\pm$ 0.02 357.5 $\pm$ 55.0 2987.1 $\pm$ 542.8
Column 1: range in pixels between inner and outer semi-major axes of annulus used for source counts (1 kpc = 21 pixels); Col. 2: total number of sources found in the annulus; Col. 3: total weighted number of sources in annulus; Col. 4: normalization density of Gaussian fit to GCLF at given annulus, as explained in text (in units of kpc-2); total expected number of clusters in annulus, obtained as explained in the text.


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