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The in-medium properties of $D_S$ mesons are investigated within theframework of an effective hadronic model, which is a generalization of a chiralSU(3) model, to SU(4), in order to study the interactions of the charmedhadrons. In the present work, the $D_s$ mesons are observed to experience netattractive interactions in a dense hadronic medium, hence reducing the massesof the $D_S^+$ and $D_S^-$ mesons from the vacuum values. While this conclusionholds in both nuclear and hyperonic media, the magnitude of the mass drop isobserved to intensify with the inclusion of strangeness in the medium.Additionally, in hyperonic medium, the mass degeneracy of the $D_S$ mesons isobserved to be broken, due to opposite signs of the Weinberg-Tomozawainteraction term in the Lagrangian density. Along with the magnitude of themass drops, the mass splitting between $D_S^+$ and $D_S^-$ mesons is alsoobserved to grow with an increase in baryonic density and strangeness contentof the medium. However, all medium effects analyzed are found to be weaklydependent on isospin asymmetry and temperature. We discuss the possibleimplications emanating from this analysis, which are all expected to make asignificant difference to observables in heavy ion collision experiments,especially the upcoming Compressed Baryonic Matter (CBM) experiment at thefuture Facility for Antiproton and Ion Research (FAIR), GSI, where matter athigh baryonic densities is planned to be produced.

$D_S$ Mesons in Asymmetric Hot and Dense Hadronic Matter