Hostname: page-component-76fb5796d-22dnz Total loading time: 0 Render date: 2024-04-27T10:03:51.373Z Has data issue: false hasContentIssue false
  • English
  • Français

The CNO-Cycle Elements in Atmospheres of B-Type Main Sequence Stars

Published online by Cambridge University Press:  19 July 2016

L.S. Lyubimkov
L.S. Lyubimkov*
Affiliation:
Crimean Astrophysical Observatory Crimea, p/o Nauchny, 334413, USSR

Extract

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 aim of this short review is to pay attention to some problems connected with the He, C and N abundances in atmospheres of B-type main sequence stars. These elements participate in CNO-cycle which is the principle source of energy in such stars. As known, the He, C and N abundances in stellar interiors are considerably changed owing to CNO-cycle (oxygen abundance alter insignificantly). There are some variations of the He, C and N abundances in stellar atmospheres, too, and our task is to discuss probable causes of such variations. It is necessary to emphasize that only normal B-type stars are considered (not He-rich or He-weak, for example).

Type
The Upper Main Sequence
Information
Symposium - International Astronomical Union , Volume 145: Evolution of Stars: The Photospheric Abundance Connection , 1991 , pp. 125 - 135
Copyright
Copyright © Kluwer 1991 

References

1. Peterson, D.M., Shipman., H.L. Ap. J. , 180, 635, 1973.Google Scholar
2. Lyubimkov, L.S. Izv. Krymsk. Astrofiz. Obs. , 52, 49, 1974.Google Scholar
3. Lyubimkov, L.S. Pis'ma v Astron Zh. , 1, No. 11, 29, 1975.Google Scholar
4. Lyubimkov, L.S. Izv. Krymsk. Astrofix. Obs. , 55, 112, 1976.Google Scholar
5. Lyubimkov, L.S. Astrofizika , 13, 139, 1977.Google Scholar
6. Lyubimkov, L.S. Astrofizika , 29, 479, 1988.Google Scholar
7. Wolff, S.C., Heasley., J.N. Ap. J. , 292, 589, 1985.CrossRefGoogle Scholar
8. Nissen, P.E. Astron. Astrophys. , 50, 343, 1976.Google Scholar
9. Lyubimkov, L.S. Astrofizika , 20, 475, 1984.Google Scholar
10. Lyubimkov, L.S. Astrofizika , 30, 99, 1989.Google Scholar
11. Eber, F., Butler., K. Astron. Astrophys. , 202, 153, 1988.Google Scholar
12. Kane, L., McKeith, C.D., Dufton., P.L. Astron. Astrophys. , 84, 115, 1980.Google Scholar
13. Lambert, D.L., M.N.R.A.S. , 182, 249, 1978.Google Scholar
14. Luck, R.E., Lambert., D.L. Ap. J. , 298, 782, 1985.Google Scholar
15. Leushin, V.V. Astron. Zh. , 61, 733, 1984.Google Scholar
16. Leushin, V.V. Astron. Zh. , 65, 571, 1988.Google Scholar
17. Leushin, V.V. Astron. Zh. , 65, 827, 1988.Google Scholar
18. Leushin, V.V. Kinematika i fizika nebesnyh tel , 5, No. 5, 47, 1989.Google Scholar
19. Becker, S.A., Cox., A.N. Ap. J. , 260, 707, 1982.Google Scholar
20. Popova, E.I., Tutukov., A.V. Astron. Zh. , 67, 428, 1990.Google Scholar
21. Gathier, R., Lamers, H., Snow., T. Ap. J. , 247, 173, 1981.Google Scholar
22. Vauclair, S. Astron. J. , 86, 513, 1981.Google Scholar
23. Gorbatsky, V.G. Private communication , 1990.Google Scholar
24. Leushin, V.V., Urpin, V.A., Yakovlev., D.G. Pis'ma v Astron. Zh. , 15, No. 11, 1008, 1989.Google Scholar