Abstract
The results of spectroscopic observations made with the NES echelle spectrograph of the 6-m BTA telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences in the wavelength interval of 3550–5100 Å with a spectral resolution of R≥50000 are used to determine the fundamental parameters and atmospheric abundances of more than 20 chemical elements including heavy s- and r-process elements from Sr to Dy for a total of 14 metal-poor G-K-type stars. The abundances of Mg, Al, Sr, and Ba were calculated with non-LTE line-formation effects accounted for. The inferred overabundance of europium with respect to iron agrees with the results obtained for the stars of similar metallicity. The chemical composition of the star BD+80°245 located far from the Galactic plane is typical of stars of the accreted halo: this star exhibits, in addition to the over-deficiency of α-process elements, also the over-deficiency of the γ-process element Ba: [Ba/Fe]= −1.46. The kinematical parameters and chemical composition imply that the stars studied belong to different Galactic populations. The abundance of the long-living element Th relative to that of the r-process element Eu is determined for six stars using the synthetic-spectrum method.
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B. W. Carney, D. W. Latham, J. B. Laird, and L. A. Aguilar, Astronom. J. 107, 2240 (1994).
P. Magain, Astronom. and Astrophys. 209, 211 (1989).
M. Axer, K. Fuhrman, and T. Gehren, Astronom. and Astrophys. 291, 895 (1994).
P. Magain and G. Zhao, Astronom. and Astrophys. 305, 245 (1996).
S. V. Ermakov, V. G. Klochkova, V. E. Panchuk, and G. Zhao, Astronom. Rep. 46, 874 (2002).
O. J. Eggen, D. Lynden Bell, and B. E. Robertson, Astrophys. J. 136, 748 (1962).
A. McWilliam, Annu. Rev. Astronom. Astrophys. 35, 503 (1997).
I. Roederer, Astronom. J. 137, 272 (2009).
M. A. C. Perryman, L. Lindegren, J. Kovalevsky, et al. Astronom. and Astrophys. 323, L49 (1997).
V. Klochkova, G. Zhao, S. V. Ermakov, et. al., Chin. J. Astronom. and Astrophys. 6, 579 (2006).
V. G. Klochkova and N. S. Tavolganskaya, Astrophysical Bulletin 65, 18 (2010).
P. Flower, Astrophys. J. 469, 355 (1996).
H. L. Giclas, R. Burnham, and N. G. Thomas, Lowell Proper Motion Survey, Northern hemisphere. The G numbered stars (Lowell Observatory, Flagstaff, Arizona, 1971).
V. E. Panchuk, V. G. Klochkova, M. V. Yushkin, and I. D. Naidenov, Journal Optical technology 76, 87 (2009).
V. E. Panchuk, N. E. Piskunov, V. G. Klochkova, and M. V. Yushkin, Preprint Spec. Astrophys. Obs. №169, (2002).
V. E. Panchuk, V. G. Klochkova, M. V. Yushkin, and M.V. Yakopov, Astrophysical Bulletin 64, 392 (2009).
M. V. Yushkin, and V. G. Klochkova, Preprint Spec. Astrophys. Obs. No 206 (2005).
R. Cayrel, in Proc. 111th IAU Symp. “Calibration of Fundamental Stellar Quantities”, Ed. by D. S. Hayes, L. E. Pasinetti, and A. G. David Philip (Reidel Publ. Comp., 1985), p. 137.
N. E. Piskunov, F. Kupka, T. A. Ryabchikova, et al., Astronom. and Astrophys. Suppl. Ser. 112, 525 (1995).
F. Kupka, N. E. Piskunov, T. A. Ryabchikova, et al., Astronom. and Astrophys. Suppl. Ser. 138, 119 (1999).
A. Alonso, S. Arribas, and C. Martinez-Roger, Astronom. and Astrophys. Suppl. Ser. 117, 227 (1996).
A. J. Cenarro, R. F. Peletier, P. S’anchez-Blázquez, et al., Monthly Notices Roy. Astronom. Soc. 374, 664 (2007).
B. E. Reddy, D. L. Lambert. and C. Allende Prieto, Monthly Notices Roy. Astronom. Soc. 367, 1329 (2006).
R. G. Gratton, E. Carretta, R. Claudi, et al., Astronom. and Astrophys. 404, 187 (2003).
H.-M. Qiu, G. Zhao, M. Takada-Hidai, et al., Publ. Astronom. Soc. Japan 54, 103 (2002).
B.W. Carney, J. Wright, C. Sneden, et al., Astronom. J. 114, 363 (1997).
K. K. Gilroy, C. Sneden, C. A. Pilachowski, and J. J. Cowan, Astrophys. J. 327, 298 (1988).
D. L. Burris, C. A. Pilachowski, T. E. Armandroff, et al., Astrophys. J. 544, 2302 (2000).
S. Honda, W. Aoki, T. Kajino, et al., Astrophys. J. 607, 474 (2004).
R. Kurucz. ATLAS 9 stellar atmosphere program and 2 km/s grid // CD-ROM13 (1993).
M. Carlsson, Uppsala Obs. Rep. 33, (1986).
M. Asplund, N. Grevesse, and A. J. Sauval, ASP Conf. Ser. 336, 25 (2005).
F.-K. Thielemann, D. Argast, F. Brachwitz, et al., Astrophys. and Space Sci. 281, 25 (2002).
T. V. Mishenina, C. Soubiran, V. V. Kovtyukh, and S. A. Korotin, Astronom. and Astrophys. 418, 551 (2004).
S. A. Korotin, G. Wallerstein, T. V. Mishenina, V.V. Kovtyukh, and V. A. Makaganyuk in Spectroscopic methods in modern astrophysics. Ed. by L. I. Mashonkina and M. I. Sachkov (Yanus-K, Moscow, 2007), p. 87.
R. G. Gratton, E. Carretta, S. Desidera, et al., Astronom. and Astrophys. 406, 131 (2003).
B. E. Reddy and D. Lambert, Monthly Notices Roy. Astronom. Soc. 391, 95 (2008).
S. M. Andrievsky, M. Spite, S. A. Korotin, et al., Astronom. and Astrophys. 481, 481 (2008).
A. Heger and S. E. Woosley, Astrophys. J. 567, 532 (2002).
P. E. Nissen, C. Akerman, M. Asplund, et al., Astronom. and Astrophys. 469, 319 (2007).
E. V. Belyakova and L. I. Mashonkina, Astronom. Zh. 41, 530 (1997).
C. I. Short and P. H. Hauschildt, Astrophys. J. 641, 494 (2006).
S. M. Andrievsky, M. Spite, S. A. Korotin, et al., Astronom. and Astrophys. 494, 1083 (2009).
V. V. Tsymbal, ASP. Conf. Series 108, 198 (1996).
L. I. Mashonkina and T. Gehren, Astronom. and Astrophys. 364, 249 (2000).
T. Bensby, S. Feltzing, I. Lundstrom, and I. Ilyin, Astronom. and Astrophys. 443, 185 (2005).
E. F. del Peloso, L. da Silva, G. F. Porto de Mello and L. I. Arany-Prado, Astronom. and Astrophys. 440, 1153 (2005).
H. Nilsson, Z. G. Zhang, H. Lundberg, et al., Astronom. and Astrophys. 382, 368 (2002).
I. I. Ivans, C. Sneden, C. N. James, et al., Astrophys. J. 592, 906 (2003).
H. W. Zhang and G. Zhao, Monthly Notices Roy. Astronom. Soc. 364, 712 (2005).
W. A. Fowler and F. Hoyle, Ann. Phys., 10, 280 (1960).
H. R. Butcher, Nature, 328, 127 (1987).
P. Francois, M. Spite, and F. Spite, Astronom. and Astrophys. 274, 821 (1993).
C. Sneden, G. W. Preston, A. McWilliam, and L. Searle, Astrophys. J. 431, L27 (1994).
J. Westin, C. Sneden, B. Gustafsson, and J. J. Cowan, Astrophys. J. 530, 783 (2000).
J. A. Johnson and M. Bolte, Astrophys. J. 554, 888 (2001).
E. Caffau, L. Sbordone, H.-G. Ludwig, et al., Astronom. and Astrophys. 483, 591 (2008).
H. Schatz, R. Toenjes, B. Pfeiffer, et al. Astrophys. J. 579, 626 (2002).
W. Hayek, U. Wiesendahl, N. Chritlieb, et al. Astronom. and Astrophys. 504, 511 (2009).
R. F. G. Wyse, in Chemical Abundances in the Universe: Connecting First Stars to Planets, Ed. by K. Cunha, M. Spite, and B. Barbuy (2009), p. 119.
V. A. Marsakov and T. V. Borkova, Astronom. Lett. 31, 515 (2005).
V. A. Marsakov and T. V. Borkova, Astronom. Lett. 32, 545 (2006).
V. A. Marsakov and A. A. Suchkov, SovietAstronomy 21, 700 (1977).
T.V. Borkova and V. A. Marsakov, Astronom. Rep. 44, 665 (2000).
K. Fuhrmann, in The First Stars. Proc. MPA/ESO Workshop, Ed. by A. Weiss, T. G. Abel, and V. Hill (Springer, 2000), p. 68.
R. Gratton, E. Carretta, F. Matteucci, and C. Sneden, Astronom. and Astrophys. 358, 671 (2000).
V. V. Koval’, V. A. Marsakov, and T. V. Borkova, Astronom. Rep. 53, 785 (2009).
T. Bensby, S. Feldzing, and I. Lungstrem, Astronom. and Astrophys. 410, 527 (2003).
Y.-Z. Qian and G. J. Wasserburg, Astrophys. J. 588, 1099 (2003).
H. Ning, Y.-Z. Qian and D. Meyer, Astrophys. J. 667, L159 (2007).
M. G. Abadi, M. S. Navarro, and V. R. Eke, Astrophys. J. 591, 499 (2003).
K. A. Venn, M. Irwin, M. D. Shetrone, et al., Astronom. J. 128, 1177 (2004).
D. Carollo, T. Beers, M. Chiba, et al., Astrophys. J. 712, 692 (2010).
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Original Russian Text © V. G. Klochkova, T. V. Mishenina, V. E. Panchuk, S. A. Korotin, V. A. Marsakov, I. A. Usenko, V. V. Tsymbal, 2011, published in Astrofizicheskij Byulleten, 2011, Vol. 66, No. 1, pp. 28–48.
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Klochkova, V.G., Mishenina, T.V., Panchuk, V.E. et al. Chemical composition of high proper-motion stars based on short-wavelength optical spectra. Astrophys. Bull. 66, 28–46 (2011). https://doi.org/10.1134/S1990341311010020
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DOI: https://doi.org/10.1134/S1990341311010020