Monthly Notices of the Royal Astronomical Society vol:278 issue:3 pages:877-882
We have investigated the FOV star V398 Aurigae (= 9 Aur) under the assumptions that it is undergoing non-radial gravity mode oscillations and that the two principal periods given by Krisciunas et al. are correct. We find that the two periods are manifestations of an l = 3, \m\ = 1 spheroidal mode and its toroidal corrections due to the rotation of the star. As far as we know, this is the first detection of toroidal correction terms in a real star. The two modes probably are the result of rotational splitting.