Abstract
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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References
Rogerson, J. B., Spitzer, L., Drake, J. F., Dressler, K., Jenkins, E. B., Morton, D. C., and York, D. G., Astrophys. J. Lett., 181, L97 (1973).
Kondo, Y., Giuili, R. T., Modisette, J. R. L., and Rydgren, A. E., Astrophys. J., 176, 153 (1972).
Allen, C. W., Astrophysical Quantities, Third Edition, 240 (Athlone Press, Univ. London, 1973).
Macchetto, F., and Panagia, N., Astr. Astrophys., 28, 313 (1973).
Jenkins, E. B., and Savage, B. D., Astrophys. J, 187, 243 (1974).
Moos, H. W., Linsky, J. L., Henry, R. C., and McClintock, W., Astrophys. J., 188, L93 (1974).
Hanbury Brown, R., Davis, J., Allen, L. R., and Rome, J. M., Mon. Not. R. astr. Soc., 137, 393 (1967).
Pottasch, S. R., Space Sci. Revs., 3, 816 (1964).
Burton, W. M., Jordan, C., Ridgeley, A., and Wilson, R., Phil. Trans. R. Soc., A 270, 81 (1971).
Jordan, C., and Wilson, R., in Physics of the Solar Corona (edit. by Macris, C. J.), 211 (Reidel, Dordrecht, 1971).
Ayres, T. R., Linsky, J. L., and Shine, R. A., Astrophys. J. Lett., 192, 93 (1974).
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EVANS, R., JORDAN, C. & WILSON, R. Ultraviolet emission lines in the spectrum of Procyon. Nature 253, 612–613 (1975). https://doi.org/10.1038/253612a0
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DOI: https://doi.org/10.1038/253612a0
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