We study the spectrum and isospin-violating strong decays of charmed mesons with
strangeness. The scalar Ds0*(2317) and the axial
vector Ds1*(2460) states are generated by
coupled-channel dynamics based on the leading order chiral Lagrangian. The effect of chiral corrections is investigated. We show that taking into account large-Nc relations implies a
measurable signal for an exotic axial vector state in the eta D* invariant mass distribution. The hadronic decay widths of the scalar Ds0*(2317)and the axial vector Ds1*(2460) are predicted to be 140 keV. | 
