Abstract
The carbon and nitrogen abundances, C/N and especially carbon isotope ratios 12C ∕ 13C are key tools for stellar evolution studies. In this presentation we overview available up to date analyses of C and N abundances in red clump stars of open clusters along with our recent results obtained for the open clusters NGC 6134 and IC 4651. The clump stars have accumulated all chemical composition changes, which have happened during their evolution along the giant branch and during the helium flash, thus are very trustful sources of information. A comparison of the observational data with theoretical models of stellar evolution shows that processes of extra-mixing in stars of 2–3 M ⊙ turn-off masses are larger than predicted.
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References
Boothroyd, A.I., Sackmann, I.J.: Astrophys. J. 510, 232 (1999)
Charbonnel, C., Lagarde, N.: Astron. Astrophys.in press, arXiv1006.5359 (2010)
Gilroy, K.K.: Astrophys. J. 347, 835 (1989)
Mikolaitis, Š., Tautvaišienė, G., Gratton, R., Bragaglia, A., Carretta, E.: Mon. Not. R. Astron. Soc. 407, 1866 (2010)
Mikolaitis, Š., Tautvaišienė, G., Gratton, R., Bragaglia, & A., Carretta, E., Mon. Not. R. Astron. Soc., 413, 2199 (2011)
Smiljanic, R., Gauderon, R., North, P., Barbuy, B., Charbonnel, C., Mowlavi, N.: Astron. Astrophys. 502, 267 (2009)
Tautvaišienė, G., Edvardsson, B., Tuominen, I., Ilyin, I.: Astron. Astrophys. 360, 499 (2000)
Tautvaišienė, G., Edvardsson, B., Puzeras, E., Ilyin, I.: Astron. Astrophys. 431, 933 (2005)
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Tautvaišienė, G., Mikolaitis, Š. (2012). Carbon and Nitrogen As Tracers of Stellar Evolution in Red Clump Stars of Open Clusters. In: Moitinho, A., Alves, J. (eds) Star Clusters in the Era of Large Surveys. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22113-2_39
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DOI: https://doi.org/10.1007/978-3-642-22113-2_39
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