SIMBAD references

We present the results of the analysis of the emission spectra of variable Is(A)-type stars. Sixteen stars have been observed in 1988-1992 at the 6-m telescope of Special Astrophysical Observaroty, Russian Academy of Sciences (SAO RAS) with the middle-resolution (R≃3000) echelle spectrograph ``Zebra". Equivalent widths of the H_α and H_β (if available) emission components were obtained, the underlying profile of the corresponding absorption lines were taken into account. The luminosities of the emission envelopes in the H_α and H_β lines were then calculated. The main result of the investigation is that the luminosity of the emission envelope appears to depend on the effective temperature of the star.