Spectrum variability of He weak and He strong stars

Details Spectrum variability of He weak and He strong stars Spectrum variability of He weak and He strong stars

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26as...35..313p&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 35, Mar. 1979, p. 313-323.

Astronomy and Astrophysics

Astrophysics

53

Helium, Stellar Spectrophotometry, Stellar Structure, Variable Stars, H Alpha Line, Metallic Stars, Stellar Spectra, X Ray Stars

Scientific paper

Photoelectric spectrophotometry of the He I 4026-A line in He-weak and He-strong stars and some other objects is presented. The known He variables show unchanged variability over an 8 to 10 month period. Some new He variables include HR 280 and HR 6647. H-alpha profiles were obtained for some of the He-strong stars. The H-alpha profile was found to show a variable emission component in HR 1890 and HR 3089. For HR 1932 (Sigma Ori E) a fairly uniform phase coverage was obtained in the H-alpha profiles.

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