On the Continua and Infrared Excess of Some Bright Be Stars

Newly measured scanner observations of nine bright Be stars are reported. The continuum energy distributions of these stars are presented in the wavelength range 320-800 nm. The observed continua are compared with theoretical models for estimating stellar effective temperatures and to examine the abnormalities in this region. Six Be stars are found to possess Near-UV and N/R excess emission. The available IR data have been analyzed to find the behavior of these stars in the IR. It is found that the behavior of the IR excess emission as investigated from RIJHKLM photometry is consistent with that detected from spectrophotometric observations in the optical region. By combining all the existing IR data, it is shown that, in the case of four Be stars, significant IR variations have occurred.