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Abstract: Mode splittings produced by uniform rotation and a particular form ofdifferential rotation are computed for two-dimensional rotating 10 Mo ZAMSstellar models. The change in the character of the mode splitting is traced asa function of uniform rotation rate, and it is found that only relatively slowrotation rates are required before the mode splitting becomes asymmetric aboutthe azimuthally symmetric m=0 mode. Increased rotation produces aprogressively altered pattern of the individual modes with respect to eachother. Large mode splittings begin to overlap with the mode splittings producedby different radial and latitudinal modes at relatively low rotation rates. Themode splitting pattern for the differentially rotating stars we model isdifferent than that for uniformly rotating stars, making the mode splitting apossible discriminant of the internal angular momentum distribution if oneassumes the formidable challenge of mode identification can be overcome.

Autor: Robert Deupree, Wilfried Beslin


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