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We investigate various properties of neutron star matter within an effectivechiral $SU(3)_L \times SU(3)_R$ model. The predictions of this model arecompared with a Walecka-type model. It is demonstrated that the importance ofhyperon degrees are strongly depending on the interaction used, even if theequation of state near saturation density is nearly the same in both models.While the Walecka-type model predicts a strange star core with strangenessfraction $f_S \approx 4/3$, the chiral model allows only for $f_S \approx 1/3$and predicts that $\Sigma^0$, $\Sigma^+$ and $\Xi^0$ will not exist in star, incontrast to the Walecka-type model.Comment: 13 pages, Revtex, 5 figs include

Neutron Star Properties in a Chiral SU(3) Model