Abstract
We study the effect of the photoionization cross sections for the ground state of Al I on the inferred aluminium abundance in stellar atmospheres. We match the theoretical and observed line profiles of the resonance λλ 3944.01, 3961.52 Å and subordinate λλ 6696.03, 6698.68 Å doublets in high-resolution spectra of the metal-poor solar-type stars HD22879 and HD201889. We determine the parameters of these stars from their photometric and spectroscopic data. Our computations show that the profiles can be matched and a single aluminium abundance inferred simultaneously from both groups of spectral lines only with low photoionization cross sections (about 10–12 Mb). Larger cross sections (about 58–65 Mb) make such fits impossible. We therefore conclude that small photoionization cross sections should be preferred for the determination of aluminium abundances in metal-poor stars. We redetermine the aluminium abundances in the atmospheres of halo stars. The resulting abundances prove to be lower by 0.1–0.15 dex than our earlier determinations which does not affect the conclusions based on our earlier estimates. In particular, the NLTE [Al/Fe]-[Fe/H] dependence, on the whole, agrees only qualitatively with the results of theoretical predictions. Therefore further refinement of the theory of nuclear synthesis of aluminium in the process of the chemical evolution of the Galaxy remains a task of current importance.
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References
M. J. Seaton, C. J. Zeippen, J. A. Tully, et al., Revista Mexicana Astronom. Astrofís. 23, 19 (1992).
L. I. Mashonkina, V. V. Shimanskii, and N. A. Sakhibullin, Astronomy Reports 44, 790 (2000).
D. V. Ivanova and V. V. Shimanskii, Astronomy Reports 44, 376 (2000).
J. R. Shi, T. Gehren, L. Mashonkina, and G. Zhao, Astronom. and Astrophys. 503, 533 (2009).
T. Gehren, C. Reile, and W. Steenbock, in Proc. NATO Advanced Research Workshop on Problems of Stellar Atmospheres: Beyond Classical Models, Ed. by L. Crivellari, I. Hubeny, and D. Hummer (Kluwer, Dordrecht, 1991), p. 387.
D. Baumuller and T. Gehren, Astronom. and Astrophys. 307, 961 (1996).
D. Baumuller and T. Gehren, Astronom. and Astrophys. 325, 1088 (1997).
V. S. Menzhevitski, V. V. Shimansky, and N. N. Shimanskaya, Astrophysical Bulletin 67, 294 (2012).
D. Hofsaess, Atomic Data and Nuclear Data Tables 24, 285 (1979).
D. G. Yakovlev, L. M. Band, M. B. Trzhaskovskaya, and D. A. Verner, Astronom. and Astrophys. 237, 267 (1990).
V. S. Menzhevitski, N. N. Shimanskaya, V. V. Shimansky, and N. A. Sakhibullin, Astrophysical Bulletin 68, 243 (2013).
Butler K. (private communication).
J. L. Kohl and W. H. Parkinson, Astrophys. J. 184, 641 (1973).
V. Panchuk, V. Klochkova, M. Yushkin, and I. Najdenov, J. Optical Technology 76, 87 (2009).
N. E. Piskunov and J. A. Valenti, Astronom. and Astrophys. 385 1095 (2002).
E. Hog, C. Fabricius, V. V. Makarov, et al., Astronom. and Astrophys. 355, L.27 (2000).
R. M. Cutri, M. F. Skrutskie, S. Van Dik, et al., 2MASS All Sky Catalog of Point Sources (2003).
R. L. Kurucz, SAO CD-Roms (Smithsonian Astrophysical Observatory, Cambridge, 1994).
F. Van Leeuwen, Astronom. and Astrophys. 474, 653 (2007).
L. Girardi, A. Bressan, G. Bertelli, et al., Astronom. and Astrophys. Suppl. 141, 371 (2000).
V. V. Shimansky, I. F. Bikmaev, A. I. Galeev, et al., Astronomy Reports 47, 750 (2003).
V. V. Shimansky, N. V. Borisov, and N. N. Shimanskaya, Astronomy Reports 47, 763 (2003).
F. Castelli and R. L. Kurucz, IAU Symp., No. 210, A20 (2003).
V. F. Suleymanov, Pis’ma Astronom. Zh. 22, 107 (1996).
V. F. Suleymanov, Astron. Astrophys. Transactions 2, 197 (1992).
N. A. Sakhibullin and V. V. Shimanskii, Astronomy Reports 40, 723 (1997).
S. E. Nersisyan, A. V. Shavrina, A. A. Yaremchuk, Astrophysics 30, 147 (1989).
N. N. Shimanskaya, I. F. Bikmaev, and V. V. Shimansky, Astrophysical Bulletin 66, 332 (2011).
C. R. Vidal, J. Cooper, and E. W. Smith, Astronom. and Astrophys. Suppl. 25, 37 (1973).
H. R. Griem, Astrophys. J. 132, 883 (1960).
R. L. Kurucz and I. Furenlid, Special Report No. 387 (Smithsonian Astrophysical Observatory, Cambridge, 1979).
A. Unsold, Physik der Sternatmospheren, (Springer, Berlin-Gottingen-Heidelberg, 1955).
D. V. Ivanova, N. A. Sakhibullin, and V. V. Shimanskii, Astronomy Reports 46, 390 (2002).
V. V. Shimansky, S. A. Pozdnyakova, N. V. Borisov, et al., Astronomy Letters 34, 423 (2008).
N. N. Shimanskaya, L. I. Mashonkina, and N. A. Sakhibullin, Astronomy Reports 44, 530 (2000).
V. V. Shimanskii, Astronomy Reports 46, 127 (2002).
N. Grevesse and A. J. Sauval, Space Sci. Rev. 85, 161 (1998).
R. Cayrel, E. Depagne, M. Spite, et al., Astronom. and Astrophys. 416 1117 (2004).
M. Samland, Astrophys. J. 496, 155 (1998).
S. E. Woosley and T. A. Weaver, Astronom. and Astrophys. Suppl. 101, 181 (1995).
C. Kobayashi, H. Umeda, K. Nomoto, et al., Astrophys. J. 653, 1145 (2006).
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Original Russian Text © V.S. Menzhevitski, N.N. Shimanskaya, V.V. Shimansky, D.O. Kudryavtsev, 2014, published in Astrofizicheskij Byulleten, 2014, Vol. 69, No. 2, pp. 180–189.
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Menzhevitski, V.S., Shimanskaya, N.N., Shimansky, V.V. et al. Effect of atomic parameters on determination of aluminium abundance in atmospheres of late-type stars. Astrophys. Bull. 69, 169–178 (2014). https://doi.org/10.1134/S1990341314020047
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DOI: https://doi.org/10.1134/S1990341314020047