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The circumstellar disk density distributions for a sample of 63 Be southernstars from the BeSOS survey were found by modelling their H$\alpha$ emissionline profiles. These disk densities were used to compute disk masses and diskangular momenta for the sample. Average values for the disk mass are3.4$\times$10$^{-9}$ and 9.5$\times$10$^{-10}$ $M_{\star}$ for early (B0-B3)and late (B4-B9) spectral types, respectively. We also find that the range ofdisk angular momentum relative to the star are between 150-200 and 100-150$J_{\star}/M_{\star}$, again for early and late-type Be stars respectively. Thedistributions of the disk mass and disk angular momentum are different betweenearly and late-type Be stars at a 1\% level of significance. Finally, weconstruct the disk mass distribution for the BeSOS sample as a function ofspectral type and compare it to the predictions of stellar evolutionary modelswith rapid rotation. The observed disk masses are typically larger than thetheoretical predictions, although the observed spread in disk masses istypically large.

Evidence for Different Disk Mass Distributions Between Early and Late-Type Be Stars in the BeSOS Survey