A. V. Shavrina, V. Khalack, Y. Glagolevskij, D. Lyashko, J. Landstreet, F. Leone, N. S. Polosukhina, M. Giarrusso


The analysis of Li I 6708 Ǻ blend in the spectra of HD166473 was performed for 6 rotational phases distributed over the whole rotational period (P~9.5 years). The magnetic  field model has been constructed based on the polarimetric measurements from Mathys et al. (2007). For each  observed phase the modulus of the magnetic field has also been estimated from the modeling of Fe II 6147 Ǻ, 6149 Ǻ and Pr III 6706.7 Ǻ line profiles taking into account Zeeman magnetic splitting and the angle α between the magnetic axis and the line of sight. Our measurements of the surface magnetic field agree rather well with the results of Mathys et al. (2007). The lithium abundance in each phase was obtained from the fit of the observed Li I 6708 Ǻ line with the synthetic profile calculated assuming Paschen-Back splitting for the characteristics of magnetic  field estimated from the analysis of Pr III 6706.7  Ǻ line profile. We have also estimated the abundances of Ce II, Sm II, and Nd II, whose lines contribute to the Li 6708 Ǻ blend.

Ключові слова

stars: chemically peculiar; stars: individual; HD166473

Повний текст:



Alecian G., Stift M.J.: 2010, A&A, 516, 53

Baranovskii E.A., Tarashchuk, V.P.: 2012 Kinematics and Physics of Celestial Bodies, 28, iss. 5239

Gelbmann M., Ryabchikova T., Weiss W.W., Piskunov N., Kupka F., Mathys G.: 2000, A&A, 356, 200

Gerth E., Glagolevskij Y.: 2003, Bulletin of SAO, 56, 25

Grevesse N., Asplund M., Sauval A.J., Scott P.: 2010, Ap&SS, 328, 179

Khalack V., Landstreet J.: 2012, MNRAS, 427, 569

Khochukhov O.: 2008, A&A, 483, 557

Khan S.: 2004, J.Q.S.R.T., 88, N1-3, 71

Kupka F., Ryabchikova T.A., Piskunov N.E. et al.: Baltic Astronomy, 9, 590

Landi Degl'Innocenti E., Landolfi M.: 2004, Kluwer Academic Publishers, Dordrecht, The Netherlands, 890p.

Mathys G., Kurtz D.W., Elkin V.G.: 2007, MNRAS, 380, 181

Ralchenko Yu., Kramida A., Reader J., and NIST ASD Team: 2011, NIST Atomic Spectra Database (ver. 4.1)

Shavrina A.V., Polosukhina N.S., Khan S. et al.: 2006, Astron. Rep., 50, N6, 500

Shavrina A.V., Polosukhina N.S., Zverko J., Khalack V., Tsymbal V.V., Žižňovský J.: 2001, A&A, 372, 571

Stift M.J., Leone F., Landi Degl’Innocenti E.: 2008,

MNRAS, 385, 1813

Copyright (c) 2016 Odessa Astronomical Publications

Creative Commons License
Ця робота ліцензована Creative Commons Attribution-NonCommercial 4.0 International License.