Hostname: page-component-76fb5796d-dfsvx Total loading time: 0 Render date: 2024-04-29T08:29:41.247Z Has data issue: false hasContentIssue false
  • English
  • Français

12C/13C Ratios and Li Abundances in Low-Mass C Stars

Published online by Cambridge University Press:  25 May 2016

Carlos Abia  and
Jordi Isern
Carlos Abia
Affiliation:
Dpto. Física Teórica y del Cosmos Universidad de Granada, 18071 Granada, Spain
Jordi Isern
Affiliation:
Centre d'Estudis Avançats de Blanes (CSIC) 18032 Blanes, Spain

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.

High-resolution and high signal-to-noise-ratio spectroscopy is used to derive 12C/13C ratios from the Red System of the CN molecule at 8000 Å in several galactic low-mass C stars previously analyzed for lithium. It is found that Li-rich C stars usually have low isotopic ratios (< 15). This suggests that the Li and 13C enrichments in C stars might be produced by a similar mechanism. However, due to the large uncertainties in the abundance derivations for both Li and carbon isotope ratios, this result must be confirmed with further studies.

Type
Session II — Models and Abundance Determinations
Information
Symposium - International Astronomical Union , Volume 177: The Carbon Star Phenomenon , 2000 , pp. 89 - 95
Copyright
Copyright © Kluwer 2000 

References

Abia, C., Boffin, H.M. J., Isern, J. & Rebolo, R. 1991, A&A, 245, L1 Google Scholar
Abia, C., Boffin, H.M. J., Isern, J. & Rebolo, R. 1993a, A&A, 272, 455 Google Scholar
Abia, C. & Isern, J. 1996, ApJ, 460, 443 CrossRefGoogle Scholar
Abia, C., Isern, J. & Canal, R. 1993b, A&A, 275, 96 Google Scholar
Abia, C., Isern, J. & Canal, R. 1995, A&A, 298, 465 Google Scholar
Bloemen, H. et al. 1994, A&A, 281, L5 Google Scholar
Boffin, H. M. J., Abia, C., Isern, J. & Rebolo, R. 1993, A&A Supp., 102, 361 Google Scholar
Cameron, A. G. W. 1955, ApJ, 121, 144 CrossRefGoogle Scholar
Cameron, A. G. W. & Fowler, W. A. 1971, ApJ, 164, 111 CrossRefGoogle Scholar
Claussen, M. J., Kleinmann, S. G., Joyce, R. R. & Jura, M. 1987, ApJ Supp., 65, 385 CrossRefGoogle Scholar
Deliyannis, C. P., Boesgaard, A. M. & King, J. R. 1995, ApJ, 452, L13 CrossRefGoogle Scholar
Fujita, Y. & Tsuji, T. 1977, PASJ, 29, 711 Google Scholar
Hernanz, M., José, J., Coc, A. & Isern, J. 1996, ApJ, 465, L27 CrossRefGoogle Scholar
Lambert, D. L., Gustafsson, B., Eriksson, K. & Hinkle, K. H. 1986, ApJ Supp., 62, 373 CrossRefGoogle Scholar
Lattanzio, J. C., Frost, C. A., Cannon, R. C. & Wood, P. R. 2000, in IAU Symp. 177: The Carbon Star Phenomenon, ed. Wing, R. F. (Kluwer), p. 449 Google Scholar
Neugebauer, G. & Leighton, R. B. 1969, Two-Micron Sky Survey: A Preliminary Catalog (NASA SP-3047) Google Scholar
Ohnaka, K. & Tsuji, T. 2000, in IAU Symp. 177: The Carbon Star Phenomenon, ed. Wing, R. F. (Kluwer), p. 81 Google Scholar
Sanford, R. F. 1950, ApJ, 111, 262 CrossRefGoogle Scholar
Torres-Peimbert, S. & Wallerstein, G. 1966, ApJ, 146, 724 CrossRefGoogle Scholar
Wasserburg, G. J., Boothroyd, A. I. & Sackmann, I.-J. 1995, ApJ, 447, L37 CrossRefGoogle Scholar
Woosley, S. E., Hartmann, D. H., Hoffman, R. D. & Haxton, W. C. 1990, ApJ, 356, 272 CrossRefGoogle Scholar