Photographic spectrophotometry of selected bright B and Be stars

Details Photographic spectrophotometry of selected bright B and Be stars Photographic spectrophotometry of selected bright B and Be stars

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981japa....2..141h&link_type=abstract

Journal of Astrophysics and Astronomy, vol. 2, June 1981, p. 141-159.

Astronomy and Astrophysics

Astrophysics

11

Astronomical Photography, B Stars, Early Stars, Stellar Luminosity, Stellar Spectra, Stellar Spectrophotometry, Emission Spectra, Helium, Hydrogen, Line Spectra, Radial Velocity, Spectrum Analysis, Variable Stars

Scientific paper

Coude spectra taken in the red region of 49 bright B and Be stars were examined for the behavior of H-alpha and the He I 5876 and 6678 A line profiles. Fifty-one per cent of the stars were found to show H-alpha emission to some degree and 22 percent showed helium emission. Evidence is presented for the existence of drastic changes in the line profile and the radial velocity in some of the stars on a time scale of fractions of a day.

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