Abstract
We present infra-red (JHK) photometry of 52 isolated Be stars of
spectral types O9-B9 and luminosity classes III-V. We describe a new
method of reduction, enabling separation of interstellar reddening and
circumstellar excess. Using this technique we find that the disc emission
makes a maximum contribution to the optical (B - V ) colour of a few
tenths of a magnitude. We find strong correlations between a range of
emission lines (H , Br , Br11, and Br18) from the Be stars’ discs, and
the circumstellar continuum excesses. We also find that stellar rotation
and disc excess are correlated. |
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