CHEMICAL COMPOSITION OF APPROXIMATELY EQUAL MASS Hg-Mn COMPONENTS OF THE SB2 SYSTEM 46 Draconis

Автор(и)

  • V. V. Tsymbal Simferopol State University, Україна
  • O. P. Kotchoukhov Simferopol State University, Україна
  • D. L. Lambert Department of Astronomy, University of Texas at Austin, США
  • V. L. Khokhlova Institute of Astronomy, Russian Academy of Sciences, Російська Федерація

DOI:

https://doi.org/10.18524/1810-4215.1997.10.105426

Ключові слова:

Stars, Abundances, 46 Dra

Анотація

We report results of the most complete up to date elemental abundance analysis of approximately equal mass Hg-Mn components of chemically-peculiar SB2 system 46 Dra. The highdispersion S/N≥200 CCD spectrum were obtained with the echelle spectrograph of the McDonald Observatory 2.7-m reflector. Lines in the wide spectral region of 3800-9000 Å were identified and the chemical composition of each component was determined for 25 elements. Chemical anomalies of both components are found to be roughly similar: He, C, N, O and Al deficiency, nearly normal abundance of iron-peak elements, large excesses of P,  Mn, Ga, Sr, Y, Zr, Ba, Pt, Au and Hg which show a common trend with atomic number. However we found significant abundance differences between the components especially for Ne, Al, S, V, Mn, Ni, Ga, Sr, Zr and Pt.

Посилання

Adelman S.J.: 1994, Mon. Not. Roy. Astron. Soc, 266, 97.

Adelman S.J., Ryabchikova T.A., Davidova E.S.: 1997, Mon. Not. Roy. Astron. Soc, (in press)

Adelman S.J., Pyper D.M.: 1979, Astron. J. 84, 1603.

Aikman G.C.L.: 1976 Publ. Dominion. Astrophys. Obs., 14, 379.

Galazutdinov G.: 1994 Preprint of Special Astrophys. Obs. RAS.

Guthrie B.N.G.: 1984 Mon. Not. Roy. Astron. Soc, 206, 85.

Conti P.S. 1970 Astron. Astrophys, 7, 213.

Kurucz R.L. 1993 CD-rooms Smithsonian Astrophys. Obs.

Lanz T., Artru M.C., Didelon P., Mathys G.: 1993 Astron. Astrophys, 272, 465.

Ryabchikova T.A., Zakharova L.A., Adelman S.J. :1996, Mon. Not. Roy. Astron. Soc.. 283. 1115.

Tull R.G., McQueen P.J., Sneden Ch., Lambert D.L.: 1995 PASP., 107. 251.

Khokhlova. V.L., Zverko Yu., Ziznovskij I., Griffin R.E.M.: 1995 Astronomy Letters. 21. No 6. 818.

Tsymbal V.V.: 1996 Model Atmospheres and Stellar Spectra. ASP Gonf. Ser. / Eds S.J. Adelman, W. W. Weiss. 108. 198.

Wahlgren G.A., Adelman S.J., Robinson R.D.: 1994 Astrophys. J., 434. 349.

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Опубліковано

2017-06-27

Номер

Том 10 (1997)

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року