The luminosity of the H-emission envelopes of variable Is(A)-type stars
A.F. Pugach and
Received 30 April 1996 / Accepted 20 November 1996
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 and (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 and 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.
Key words: stars: early type stars: emission line stars: variables: other stars: pre main-sequence
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© European Southern Observatory (ESO) 1997
Online publication: April 28, 1998