On the radiation deficit of shell stars in the Balmer continuum

Details On the radiation deficit of shell stars in the Balmer continuum On the radiation deficit of shell stars in the Balmer continuum

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981afz....17..317c&link_type=abstract

(Astrofizika, vol. 17, Apr.-June 1981, p. 317-326.) Astrophysics, vol. 17, no. 2, Oct. 1981, p. 174-179. Translation.

Astronomy and Astrophysics

Astronomy

B Stars, Balmer Series, Shell Stars, Stellar Envelopes, Stellar Radiation, Stellar Spectrophotometry, Continuous Radiation, Histograms, Optical Thickness, Statistical Analysis, Ultraviolet Astronomy

Scientific paper

A statistical investigation is made of the distributions of specially selected photometric parameters of all known shell and normal Be stars. Results show that, in contrast to normal Be stars, the shell stars can be characterized by an ultraviolet deficit, due to the appreciable optical thickness of the gas envelopes of the shell stars in the Balmer continuum. The shell and normal Be stars do not exhibit differences in the radiation power of the envelopes in the Paschen continuum. Finally, it is confirmed that the shell stars have later spectral classes than the normal Be stars.

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