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VANADIUM ABUNDANCES IN EARLY A STARS
CHARLES R. COWLEY, GUENTHER H. ELSTE and JANET L. URBANSKI
Publications of the Astronomical Society of the Pacific
Vol. 90, No. 537 (October 1978), pp. 536-542
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40677247
Page Count: 7
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Vanadium-to-hydrogen ratios have been determined for o Peg, HR6127, HR465 (rare earth minimum), and HR8216. With respect to the solar system, vanadium is overabundant in the first two stars, possibly normal in the third, and underabundant in the fourth. The range in the V/H ratio in these four stars is between one and two orders of magnitude. An intercomparison of the four spectra shows that the strong V ð lines occur in the stars with weaker Cr and Fe spectra. The vanadium anomaly is thus suggestive of the well-known calcium anomaly in peculiar A stars, but we believe that vanadium and calcium abundances are not closely correlated.
Publications of the Astronomical Society of the Pacific © 1978 The University of Chicago Press