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Published May 1969 | Published
Journal Article Open

Spectrum of a^2; Canum Venaticorum, 5000-6700 Å


A complete list is given of all lines observed between 5000 and 6650 Å in the spectrum of a^2 CVn. Approximately three-quarters of the features have been identified. Lines of Pb ii and P ii are not present. Lines of Gd m and Pr m vary in equivalent width and radial velocity in a manner similar to the singly ionized rare earths. Lines of Cl ii are present and also behave like those of a rare earth.

Additional Information

© American Astronomical Society • Provided by the NASA Astrophysics Data System. Received October 7, 1968; revised November 4, 1968. We wish to thank Mr. Jerry Dessinger and Mr. Robert Milton for assistance in measurements. Drs. Peter Conti and I. J. Danziger helped in the early stages of this investigation. We thank Dr. W. P. Bidelman for pointing out an error in an earlier version of this work. This research was supported in part by the U.S. Air Force under grant AFOSR 68-1401, monitored by the Air Force Office of Scientific Research of the Office of Aerospace Research.

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Published - 1969ApJ___156__629C.pdf


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