All Tables

Table 1: Sources of spectroscopic observations.
Table 3: Fluxes of H $\alpha$ Gaussian components.
Table 4: Flux scale factors for optical spectra.
Table 6: Year-averaged radial velocity of the new red peak in 2000-2003, derived from the observed H $\beta$ profiles before subtraction of the narrow component.
Table 7: Year-averaged radial velocity of the blue and red bumps derived from the difference H $\beta$ and H $\alpha$ profiles.
Table 8: The anuual averaged Balmer decrement and continuum fluxes F(cont) at the observed wavelength $\lambda 5190$ Å.
Table B.1: Log of the spectroscopic observations. Columns: 1 - number; 2 - UT date; 3 - Julian date; 4 - code according to Table 1; 5 - projected spectrograph entrance apertures; 6 - wavelength range covered; 7 - spectral resolution; 8 - mean seeing; 9 - position angle (PA) in degrees; 10 - signal to noise ratio in the continuum (5160-5220) Å near H $\beta$ and (6940-7040) Å near H $\alpha$ .
Table B.2: Observed continuum, H $_\beta$ and H $_\alpha$ fluxes. Columns: 1 - UT-Date; 2 - Julian date; 3 - a telescope code, according to Table 1; 4 - F(cont), the continuum flux at 5190 Å (in units of 10^-15 erg s^-1 cm^-2 Å^-1), reduced to the 1 m telescope aperture 4.2'' $\times$ 19.8''; 5 - $\varepsilon _c$ , the estimated continuum flux error; 6 - F(H $\beta$ ), the H $\beta$ total flux (in units of 10^-13 erg s^-1 cm^-2); 7 - $\varepsilon _{{\rm H}\beta }$ , the H $\beta$ flux error; 8 - F(H $\alpha$ ), the H $\alpha$ total flux (in units of 10^-13 erg s^-1 cm^-2); 9 - $\varepsilon _{{\rm H}\alpha }$ , the H $\alpha$ flux error.