Spectral evolution of the supergiant 55 Cygni

Details Spectral evolution of the supergiant 55 Cygni Spectral evolution of the supergiant 55 Cygni

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....45..343g&link_type=abstract

Astronomy and Astrophysics, vol. 45, no. 2, Dec. 1975, p. 343-347. In French.

Astronomy and Astrophysics

Astrophysics

4

B Stars, Stellar Evolution, Stellar Spectra, Supergiant Stars, Astronomical Catalogs, H Alpha Line, Radial Velocity, Stellar Atmospheres, Velocity Distribution

Scientific paper

Spectral variations of HD 198 478 were evaluated on the basis of a
continuous observation period of 15 days. An examination of the radial
velocities curves shows an oscillation period of 4 to 5 days inside an
atmospheric motion of 15 to 16 days. Analysis of the H-alpha line
profiles seem to confirm the radial velocities results.

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