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Spectral energy distributions are computed using 2D rotating stellar modelsand NLTE plane parallel model atmospheres. A rotating, 2D stellar model hasbeen found which matches the observed ultraviolet and visible spectrum of ?Oph. The SED match occurs for the interferometrically deduced surface shape andinclination, and is different from the SED produced by spherical models. The pmode oscillation frequencies in which the latitudinal variation is modelled bya linear combination of eight Legendre polynomials were computed for thismodel. The five highest and seven of the nine highest amplitude modes showagreement between computed axisymmetric, equatorially symmetric modefrequencies and the mode frequencies observed by MOST to within theobservational error. Including nonaxisymmetric modes up through |m| = 2 andallowing the possibility that the eight lowest amplitude modes could beproduced by modes which are not equatorially symmetric produces matches for 24out of the 35 MOST modes to within the observational error and another eightmodes to within twice the observational error. The remaining three observedmodes can be fit within 4.2 times the observational error, but even these maybe fit to within the observational error if the criteria for computed modes areexpanded.

astrophysical journal/the astrophysical journal

Matching the Spectral Energy Distribution and p Mode Oscillation  Frequencies of the Rapidly Rotating Delta Scuti Star ? Ophiuchi with a 2D  Rotating Stellar Model