Comparison between the masses of delta Scuti-variables

The photometric observations of Breger (1979) are used to calculate the pulsation-based masses M(Q) and the surface-gravity-based masses M(g) of 89 Delta Sct variables. The data and results are presented in tables and compared with the evolution-based masses M(e) determined by Tsvetkov (1986). Good agreement is found among the three mass estimates in most cases, although some variables exhibit significant discrepancies between M(Q) on the one hand and M(g) and M(e) on the other. The possible reasons for these differences are discussed in detail. (T.K.)