All Tables

Table 1: Log of spectroscopic observations of $\upsilon$ Cyg.
Table 2: Stellar parameters obtained from the fits for different cases. Case A is obtained ignoring veiling effects and gravitational darkening; Case B is obtained by accounting only for the veiling effects; for Cases C, D, and E, veiling effects and gravitational darkening are taken into account with a relative angular speed of the star at 80, 90, and 95%, respectively, of its break-up velocity (see Sect. 5).
Table 3: Results of the Time Series Analysis for the He I, C II, and Mg II lines obtained with the least squares method. The minimum detectable frequency is 0.16 and 0.11 c d^-1 in 1998 and 2000, respectively.
Table 4: $\ell$ and m values deduced from the phase difference $\Delta \Psi / \pi$ measured from the phase distribution of different frequencies in the lpvof several photospheric lines (see e.g. Figs. 9 and 10).
Table 5: Results of time series analysis for the Balmer H $\beta$ and H $\gamma$ lines obtained with the least squares method.