COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     NUMBER 134



                                        Konkoly Observatory
                                        Budapest
                                        5 May 1966


              SPECTRUM OF THE EARLY-TYPE
               FLARE STAR BD +13deg1048




     The variability of the sixth magnitude star BD +31deg1048 was
discovered by Andrews 1964 who found an increase of at least 3mag on
March 1, 1964, and rapid changes in brightness on March 10 and 14,
with amplitudes up to 2 magnitudes. Two spectrograms in the blue
region taken at Herstmonceaux and Edinburgh show normal B8 features,
in agreement with the HD classification but not in accord with the
present scheme of flare stars. However, according to the strict
temporal meaning of the word, the object is claimed to be a flare star
(Andrews, 1965). The author of the discovery hopes that possibly H-alpha
could be detected in emission, but this is not the case. Two spectra
obtained at Asiago on November 22d3h5m U.T., 1964 and November
8d22h53m U.T., 1965, both on Kodak 103aF with a two-prisms camera
(dispersion 42 A/mm at H-gamma), do not leave any doubt about the absence
of any emission line, even in the red region. H-alpha itself appears strong
in absorption.


Astrophysical Observatory, Asiago
April 8, 1966


                            A. MAMMANO


References
Andrews A. D., Armagh Contribution No. 46, 1964
Andrews A. D., Armagh Contribution No. 49, 1965