R Coronae Borealis in 1977 and 1983 visual minima. II - Spectral observations

Details R Coronae Borealis in 1977 and 1983 visual minima. II - Spectral observations R Coronae Borealis in 1977 and 1983 visual minima. II - Spectral observations

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986kfnt....2...83r&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 2, Nov.-Dec. 1986, p. 83-86. In Russian.

Physics

1

Corona Borealis Constellation, Emission Spectra, Flare Stars, R Coronae Borealis Stars, Stellar Spectra, Stellar Spectrophotometry, Variable Stars, H Lines, K Lines

Scientific paper

The development of the emission spectrum of R Coronae Borealis is observed on the descending branch of deep minima of 1977 and 1983. The lines Ti II, Sc II, Sr II, Ca II, Ca I, Ba II, He I, Na I are identified. The half-widths of H and K Ca II lines are about 100 km/s. The origin of the emission continuum at a wavelength less than 400 nm, observed in 1977, may be due to development of the system of wide emission lines H and K Ca II, He I which differ from development of the system of narrow emissions (Ti II, Sc II etc.).

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