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Interpretations of Stellar Spectra: NLTE Effects

Published online by Cambridge University Press:  30 March 2016

Yakiv V. Pavlenko
Yakiv V. Pavlenko*
Affiliation:
The Principal Astronomical Observatory of the National Academy of Sciences, Golosiiv, Kyiv 252650 Ukraine

Extract

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To solve the system of statistical balance equations and radiative transfer equations (NLTE problem) we followed the modification of linearization method proposed by Auer and Heasley (1976) and used 20-level model of the lithium atom. The 70 radiative and all possible collisional transitions were included into the rate matrix (Pavlenko 1994).

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 10: Highlights of Astronomy. As presented at the XXIInd General Assembly of the IAU, 1994 , 1995 , pp. 453 - 454
Copyright
Copyright © Kluwer 1995

References

Auer, L.H., Heasley, I.N. (1976) An alternative formulation of non-LTE transfer problem. Astrophys. J., v. 205, pp. 165–171. CrossRefGoogle Scholar
Carlsson, M., Rutten, R.J., Bruls, R.H.M.J., Shchukina, N.G. (1994) The non-LTE formation of Li I lines in cool stars, Prepr. of Inst. of Theoret. Astrophys., Oslo, no.17, pp. 01–24. Google Scholar
Magazzù, A., Rebolo, R., Pavlenko, Ya.V., (1992) Lithium abundances in classical and weak T Tauri stars Astrophys. J., v. 392, pp. 159–171. Google Scholar
Martín, E.L., Rebolo, R., Magazzù, A., Pavlenko, Ya.V. (1994) Pre-main sequence lithium burning. I. Weak T Tauri stars Asrton. & Astrophys., v. 282, pp. 503–517. Google Scholar
Pavlenko, Ya.V. Statistical equilibrium of the lithium in different metallicity dwarfs atmospheres with T eff = 5770K, log g = 4.44. (1994) Astrophys. Lett., in pressGoogle Scholar
Rebolo, R. Molaro, P., Beekman, J.E. (1988) Lithium abundances in metal-deficient dwarfs Astron. & Astrophys., v. 192, pp. 192–205. Google Scholar
Spite, F., Spite, M. (1982) Abundance of lithium in unevolved halo stars and Old disk stars: Interpretations and consequences. Astron. & Astrophys., v. 115, pp. 357–366. Google Scholar
Thorburn, J.A. (1994) The Primordial Lithium Abundance from Extreme Subdwarfs: New Observations. Astrophys. J., v. 421, pp. 318–335.Google Scholar