We explore several correlations between various large-scale galaxyproperties, particularly total globular cluster population (N_GCS), the centralblack hole mass (M_BH), velocity dispersion (nominally sigma_e), and bulge mass(M_dyn). Our data sample of 49 galaxies, for which both N_GC and M_BH areknown, is larger than used in previous discussions of these two parameters andwe employ the same sample to explore all pairs of correlations. Further, withinthis galaxy sample we investigate the scatter in each quantity, with emphasison the range of published values for sigma_e and effective radius (R_e). Wefind that these two quantities in particular are difficult to measureconsistently and caution that precise intercomparison of galaxy propertiesinvolving R_e and sigma_e is particularly difficult. Using both chi^2 and Monte Carlo Markov Chain (MCMC) fitting techniques, weshow that quoted observational uncertainties for all parameters are too smallto represent the true scatter in the data. We find that the correlation betweenM_dyn and N_GC is stronger than either the M_BH-sigma_e or M_BH-N_GC relations.We suggest that this is because both the galaxy bulge population ans N_GC werefundamentally established at an early epoch during the same series ofstar-forming events. By contrast, although the seed for M_BH was likely formedat a similar epoch, its growth over time is less similar from galaxy to galaxyand thus less predictable.
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