Ultraviolet emission lines in the spectrum of Procyon

Details Ultraviolet emission lines in the spectrum of Procyon Ultraviolet emission lines in the spectrum of Procyon

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975natur.253..612e&link_type=abstract

Nature, Volume 253, Issue 5493, pp. 612-613 (1975).

Physics

14

Scientific paper

THE Princeton instrumentation1 on the satellite Copernicus has been used to observe the F5 1V star, αCMi (Procyon). Tn addition to previously observed2 lines of Mg II, the Lyman-α line of H I (1,216 Å), and the resonance lines of Si III(1,206 Å) and O VI (1,032 Å) have been observed for the first time in an F-type star. Figure 1 shows the observed lines, all of which exceed the two standard deviation level.

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