Abstract
Owing to their intrinsic reddening, Be stars may be "over-dereddened" when they are corrected for interstellar absorption by classical photometric methods. So a dereddening method often used for these stars is to take the interstellar bump at 2200 Å. The authors tested this method by comparing its results with the interstellar reddening obtained from surrounding stars. The comparison of interstellar reddenings of Be stars obtained from the 2200 Å bump and from the surrounding stars shows that the interstellar reddening obtained from the 2200 Å band have a tendency to be slightly overestimated. Some likely physical explanations are suggested.
