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KIC 10001893 is a V1093 Her type pulsating subdwarf-B star, which wasobserved extensively by the Kepler spacecraft. It was a part of the surveysearching for compact pulsators in the Kepler field of view. An amplitudespectrum of the star demonstrates a rich content of g-modes between 102 and 496{\mu}Hz as well as a few p-modes above 2000 {\mu}Hz. In total, we found 110frequencies. The g-mode region contains 104 frequencies, while the p-moderegion contains just six, altogether indicating the hybrid nature of KIC10001893. The main goal of our analysis was to identify the detected modes andto find some features, which will significantly help modeling of the star. Wefound no multiplets, which points at a pole-on orientation, however, we definedmodal degrees and relative radial orders using asymptotic period spacing.Eventually, we assigned 32 dipole l = 1 and 18 quadrupole l = 2 modes. The mostremarkable feature we found are trapped modes, which are clearly seen in areduce period diagram. It is the first time that three trapped modes aredetected in one pulsating sdB star. Since the more trapped modes we find, thebetter sounding of the stellar interior we can do, this feature providesimportant constraints on the physical structure of the star. Mode trapping islikely caused by the He-H transition region and therefore it provides crucialconstraints for making realistic theoretical models of hot subdwarfs.

KIC 10001893: A pulsating sdB star with multiple trapped modes