5 Conclusions

The present study shows that the slope of the Balmer continuum near the Balmer jump can be a very good estimator of $T_\mathrm{eff}$ for CP2 stars. The $T_\mathrm{eff}$ for 68 CP stars was determined from the continuum near the Balmer jump by using the average energy distribution of the stars measured by Adelman, Pyper, Shore and White and by Pulkovo astronomers as well. From comparison of $T_\mathrm{eff}$($\it\Phi_\mathrm{u}$)with $T_\mathrm{eff}$derived by various methods and by different sets of observations it is concluded that there is a good agreement between the effective temperatures for the subsets of common stars.

There is a clear need for the further applications of this method to CP1, CP3 and CP4 stars, to have a large amount of data from which it would be possible to analyse the problems of effective temperature, classification and atmosphere modeling of CP stars. There is also a need to study the effective temperature and the Balmer jump variations with a phase for stars with enough number of the individual scans.

Acknowledgements

The author would like to thank Drs. V.A. Hagen-Thorn, I.M. Kopylov and I.S. Guseva for their helpful comments. This work has been supported by the Russian National Foundation for Astronomy (project No. 1.4.1.2).