Supplement to the Mount Wilson Catalogue and Bibliography of Stars of Classes B and a whose Spectra have Bright Hydrogen Lines.

Abstract

The Supplement lists 250 additional bright-line stars of classes B and A. Numerous notes record un- published data concerning stars in the original Catalogue, as well as those in the Supplement. The chief features of some of the more interesting spectra are indicated. The bibliography lists 407 articles (of which 386 have been published since 1932) that give observa- tional material concerning stars in the Catalogue and the Supplement. References to individual stars may be found from the key to the bibliography