Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T16:01:22.509Z Has data issue: false hasContentIssue false
  • English
  • Français

The Chemical Composition of Cool Stars: II - The Hydrogen Deficient Stars

Published online by Cambridge University Press:  12 April 2016

David L. Lambert
David L. Lambert*
Affiliation:
Department of AstronomyThe University of TexasAustin, TX 78712USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The chemical composition of the R Coronae Borealis and cool hydrogen deficient carbon stars is reviewed. Similarities and differences between these stars and the hot He stars are noted. Proposed origins for the hydrogen deficient stars are sketched. Recent claims that normal (spectral type N) cool carbon stars are hydrogen deficient are shown to be unfounded. Attention is drawn to the curious case of pop. II variables (RV Tauri, W Virginis, and RR Lyrae stars) whose atmospheres show striking deficiencies of heavy elements and may be hydrogen deficient.

Type
IV Cool Hydrogen Deficient Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 126 - 150
Copyright
Copyright © Reidel 1986

References

Aller, L.H., and Czyzak, S.J. 1983, Ap. J. Suppl., 51, 211.CrossRefGoogle Scholar
Anderson, K.S., and Kraft, R.P. 1971, Ap. J., 167, 119.Google Scholar
Barker, T., Baumgart, L.D., Butler, D., Cudworth, K.M., Kemper, E., Kraft, R.P., Lorre, J., Rao, N.K., Reagan, G.H., and Soderblom, D.R. 1971, Ap. J., 165, 67.Google Scholar
Berman, L. 1935, Ap. J., 81, 369.Google Scholar
Bidelman, W.P. 1953, Ap. J., 117, 25.CrossRefGoogle Scholar
Böhm-Vitense, E. 1979, Ap. J., 234, 521.Google Scholar
Bond, H.E., Luck, R.E., and Newman, M.J. 1979, Ap. J., 233, 205 (BLN).Google Scholar
Butler, D. 1975, Ap. J., 200, 68.CrossRefGoogle Scholar
Cameron, A.G.W., and Fowler, W.A. 1971, Ap. J., 164, 111.Google Scholar
Campbell, B. 1985, preprint.Google Scholar
Canal, R., Isern, J., and Sanahuja, B. 1977, Ap. J., 214, 189.Google Scholar
Clegg, R.E.S., Lambert, D.L., and Tornkin, J. 1981, Ap. J., 250, 262.Google Scholar
Climenhaga, J.L. 1960, Pub. D. A. O. Vic., 11, 307.Google Scholar
Coleridge, S.T. 1810, The Friend, No. 21.Google Scholar
Cottrell, P.L., and Lambert, D.L. 1982a, Ap. J., 261, 595 (CL).Google Scholar
Cottrell, P.L., and Lambert, D.L. 1982b, Observatory, 102, 149.Google Scholar
Danziger, I.J. 1965, M.N.R.A.S., 130, 199 (D65).CrossRefGoogle Scholar
Deupree, R.G., and Cole, P.W. 1981, Ap. J. (Letters), 249, L35.Google Scholar
Dominy, J.F. 1984, Ap. J. Suppl., 55, 27.Google Scholar
Dominy, J.F., Wallerstein, G., and Suntzeff, N.B. 1986, Ap. J., in press.Google Scholar
Dufour, R.J., Shields, G.A., and Talbot, R.J. Jr., 1982, Ap. J., 252, 461.Google Scholar
Eriksson, K., Gustafsson, B., Jørgensen, U.G., and Nordlund, Ă 1984, Astr. Ap., 132, 37.Google Scholar
Fowler, W.A., Caughlan, G.R., and Zimmerman, B.A. 1975, Ann. Rev. Astr. Ap. 13, 69.Google Scholar
François, P. 1985, Astr. Ap., submitted.Google Scholar
Goebel, J.H., and Johnson, H.R. 1984, Ap. J. (Letters), 284, L39.Google Scholar
Goorvitch, D., Goebel, J.H., and Augason, G.C., Ap. J., 240, 588.CrossRefGoogle Scholar
Grevesse, N. 1984, Phys., Scr., T8, 49 (G84).Google Scholar
Härm, R., and Schwarzschild, M. 1975, Ap. J., 200, 234.Google Scholar
Heber, U. 1983, Astr. Ap., 118, 39 (H83).Google Scholar
Heber, U., and Schönberner, D. 1981, Ap. J., 102, 73.Google Scholar
Holweger, H., and Kovács, N. 1984, Astr. Ap., 132, L5.Google Scholar
Hunger, K., Schönberner, D., and Steenbock, W. 1982, Astr. Ap., 107, 93 (HSS).Google Scholar
Iben, I. Jr., 1984, Ap. J., 277, 333.CrossRefGoogle Scholar
Iben, I. Jr., and Tutukov, A.V. 1985, Ap. J. Suppl., 58, 661.Google Scholar
Jacoby, G.H., and Ford, H.C. 1983, Ap. J., 266, 298 Google Scholar
Johnson, H.R., Goebel, J.H., Goorvitch, D., and Ridgway, S.T. 1983, Ap. J. (Letters), 270, L63.Google Scholar
Johnson, H.R., Alexander, D.R., Bower, C.D., Lemke, D.A., Luttermoser, D.G., Petrakis, J.P., Reinhart, M.D., Welch, K.A., and Goebel, J.H. 1985, Ap. J., 292, 228.Google Scholar
Keenan, P.C., and Greenstein, J.L. 1963, Contr. Perkins Obs. 2, 13.Google Scholar
Kilkenny, D. 1982, M.N.R.A.S., 200, 1019.Google Scholar
Lambert, D.L. 1985, in Cool Stars with Excesses of Heavy Elements, ed. Jaschek, M., and Keenan, P.C. (Dordrecht: Reidel), p. 191.Google Scholar
Lambert, D.L., Gustafsson, B., Eriksson, K., and Hinkle, K.H. 1986, Ap. J. Suppl., in press.Google Scholar
Luck, R.E. 1981, P.A.S.P., 93, 211.Google Scholar
Luck, R.E., and Lambert, D.L. 1981, Ap. J., 245, 1018.Google Scholar
Malaney, R.A. 1985, M.N.R.A.S., 216, 743 (M85).Google Scholar
Nissen, P.E. 1983, in Proc. ESO Workship on ‘Primordial Helium’, ed. Shaver, P.A., Kunth, D., and Kjär, K. (Garching: ESO), p. 163.Google Scholar
Nissen, P.E., Edvardsson, B., and Gustafsson, B. 1985, in Proc. ESO Workshop on “Production and Distribution of C, N, O Elements”, in press.Google Scholar
Orlov, M.Ya., and Rodriguez, M.H. 1974, Astr. Ap., 31, 203 (OR74).Google Scholar
Orlov, M.Ya., and Rodriguez, M.H. 1981a, Soviet Astr. Lett., 7, 126 (OR81a).Google Scholar
Orlov, M.Ya., and Rodriguez, M.H. 1981b, Soviet Astr. Lett., 7, 382 (OR81b).Google Scholar
Paczynski, B. 1971, Act. Astr., 21, 1.Google Scholar
Page, N. 1983, in ‘A. E. Housman, a critical Biography’, (New York: Schocken Books), p. 5.Google Scholar
Querci, M., and Querci, F. 1978, Astr. Ap. 70, L45.Google Scholar
Rao, N.K., Ashok, N.M., and Kulkarni, P.V. 1980, J. Astr. Ap., 1, 71.Google Scholar
Renzini, A. 1979, in Stars and Star Systems, ed. Westerlund, B.E. (Dordrecht: Reidel), p. 155.CrossRefGoogle Scholar
Renzini, A. 1981, in Effects of Mass Loss on Stellar Evolution, ed. Chiosi, C., and Stalio, R. (Dordrecht: Reidel), p. 319.Google Scholar
Rodgers, A.W., and Bell, R.A. 1963, M.N.R.A.S., 125, 487.Google Scholar
Rufus, W.C. 1915, Pub. Michigan Obs., 2, 103.Google Scholar
Schönberner, D. 1975, Astr. Ap., 44, 381 (S75).Google Scholar
Schönberner, D. 1977, Astr. Ap., 57, 437.Google Scholar
Searle, L. 1961, Ap. J., 133, 531 (S61).Google Scholar
Smith, V.V., and Lambert, D.L. 1985, Ap. J., 294, 326.Google Scholar
Smith, V.V., and Lambert, D.L. 1986, Ap. J., submitted.Google Scholar
Sneden, C., and Pilachowski, C.A. 1984, P.A.S.P., 96, 38.CrossRefGoogle Scholar
Tomkin, J., Balachandran, S., and Lambert, D.L. 1985, Ap. J., 290, 289.Google Scholar
Tomkin, J., and Lambert, D.L. 1983, Ap. J., 273, 722.Google Scholar
Tsuji, T. 1981, J. Astr. Ap., 2, 95.Google Scholar
Tsuji, T. 1983, Astr. Ap., 122, 314.Google Scholar
Vardya, M.S. 1966, Observatory, 86, 162.Google Scholar
Warner, B. 1967, M.N.R.A.S., 137, 119.Google Scholar
Zirin, H. 1982, Ap. J., 260, 255.Google Scholar