Evidence for a corona of beta Geminorum

Details Evidence for a corona of beta Geminorum Evidence for a corona of beta Geminorum

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...193l.107g&link_type=abstract

Astrophysical Journal, vol. 193, Nov. 1, 1974, pt. 2, p. L107-L110. NASA-sponsored research.

Astronomy and Astrophysics

Astrophysics

29

Coronas, Emission Spectra, Giant Stars, Line Spectra, Stellar Atmospheres, Ultraviolet Spectra, Chromosphere, Lyman Alpha Radiation, Radiant Flux Density, Stellar Spectrophotometry, Stellar Temperature

Scientific paper

A spectrometer was used on the satellite Copernicus to observe a
chromospheric L alpha emission from the K0 giant beta Gem at 1218.4 A.
This emission appears to be in the corona at temperatures near 260,000
deg K, since the ion it is identified with requires 77.4 eV to be
produced.

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