Spectral energy distribution and long-term variations in Gamma Cassiopeiae

Details Spectral energy distribution and long-term variations in Gamma Cassiopeiae Spectral energy distribution and long-term variations in Gamma Cassiopeiae

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.145..263g&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 145, no. 2, June 1988, p. 263-275.

Astronomy and Astrophysics

Astrophysics

5

B Stars, Cassiopeia Constellation, Irregular Variable Stars, Spectral Energy Distribution, Balmer Series, Brightness Distribution, Continuous Radiation, Emission Spectra, Stellar Magnitude, Visible Spectrum

Scientific paper

Newly measured continuum energy distribution data of a typical Be star, γ Cas, is presented in the visible region (λλ3200 - 8000 Å). The behaviour of the continuum over the broader wavelength range covering the ultraviolet, visible, and infrared regions is summarized. It is found that γ Cas exhibits large variations in the continuum which are connected with variations in the strength of ultraviolet and infrared excess emissions. The present investigation shows that γ Cas has exhibited three phases - Be, Be shell, and normal B - in the past.

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