Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....66..197b&link_type=abstract
Astronomy and Astrophysics, vol. 66, no. 1-2, May 1978, p. 197-203.
Astronomy and Astrophysics
Astrophysics
17
B Stars, Stellar Radiation, Stellar Spectrophotometry, Ultraviolet Spectra, Astronomical Catalogs, Brightness Temperature, Interstellar Extinction, Stellar Magnitude
Scientific paper
A general comparison of ultraviolet fluxes between 1400 A and 2740 A of Be stars to those of B stars has been made using data from the Ultraviolet Bright Star Spectrophotometric Catalog (1967). A total of 117 Be stars and 167 B stars in the range B0-B9 were studied. For spectral types later than B3, no excess or deficiency in the mean ultraviolet flux of the Be stars compared to the B stars was detected. For B1, B2, and B3 stars a very faint mean excess is detected longwards of 1900 A. The ultraviolet flux excess observed for B0e stars may well be due to an overestimate of the interstellar reddening corrections. When Be stars are studied individually, a correlation is found between the flux at 2740 A and the flux just shortwards of the Balmer discontinuity.
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