1978, in Astronomical Papers Dedicated to Bengt Strömgren, ed. Kane, L., McKeith, C.D., and Dufton, P.L. Kaler, J.B., Iben, I., Jr., and Becker, S.A. Hinkle, K.H., Lambert, D.L., and Snell, R.L. Greene, T.F., Perry, J., Snow, T.P., and Wallerstein, G. 1980, private communication.ĭominy, J.F., Hinkle, K.H., and Lambert, D.L. Dissertation, University of Texas.ĭay, R.W., Lambert, D.L., and Sneden, C. J., submitted for publication.Ĭloutman, L.D. Letters, 239, L79.īranch, D., Lambert, D.L., and Tomkin, J. Pacific, 88, 353.īoesgaard, A.M., and Chesley, S.E. This process is experimental and the keywords may be updated as the learning algorithm improves.īecker, S.A., and Iben, I., Jr. These keywords were added by machine and not by the authors.
Several classes of peculiar low luminosity red giants are briefly discussed. The speculation is offered that the ON-cycle processed material is transported out by rotationally induced meridional currents or by convection cells to layers that during the red giant phase fall within the deep convective envelope. The supergiants including Cepheids show an O deficiency that is not predicted by standard theory. The 13C-rich giants appear during the main sequence phase to have experienced a slow mixing within the radiative zone outside the core. For the G and K giants (M ≤ 3 M ⊙), the observed and predicted abundance changes are in fair agreement. Theoretical predictions are reviewed and compared with the observed abundance changes. The first dredge-up changes the red giant atmosphere abundances of Li, Be and B and the participants in the CNO-cycle.
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