PRELIMINARY RESULTS OF DOPPLER IMAGING ANALYSIS OF roAp STAR alpha Cir

Автор(и)

  • D. V. Alentjev Tavrian National University, Ukraine
  • D. E. Mkrtichian Crimean Astrophysical Observatory, Nauchny, Crimea, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.2010.23.84021

Ключові слова:

Stars, Alpha Circini, methods, Doppler imaging mapping

Анотація

Based on high-resolution spectra, we investigate the abundance distribution of chromium and silicon on the surface of alpha Cir using Doppler Imag ing technique. Results of our analysis show the pres ence of chromium and silicon spots on the surface of alpha Cir as well as large gradients of the abundances of
these elements.

Посилання

Kochukhov O., Shulyak D., Ryabchikova T.: 2009, A&A, 499, 851

Kupka F., Ryabchikova T.A., Piskunov N.E. et al.: 2000, Baltic Astronomy, 9, 590

Piskunov N.E., Rice J.B.: 1993, PASP, 105, 1415

Shulyak D., Tsymbal V., Ryabchikova T., et al.: 2004, A&A, 428, 993

Tsymbal V.: 1996, ASP Conf. Series, 108, 198

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Опубліковано

2010-11-22

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