ANALYSIS OF THE SPECTRAL ENERGY DISTRIBUTION OFTHE COOLEST RCrB TYPE CARBON STAR DY Per

Автор(и)

  • L. A. Yakovina Main astronomical observatory of the national academy of sciences of Ukraine, Kiev, Ukraine, Україна
  • A. V. Shavrina Main astronomical observatory of the national academy of sciences of Ukraine, Kiev, Ukraine, Україна
  • Ya. V. Pavlenko Main astronomical observatory of the national academy of sciences of Ukraine, Kiev, Ukraine, Україна
  • A. F. Pugach Main astronomical observatory of the national academy of sciences of Ukraine, Kiev, Ukraine, Україна

DOI:

https://doi.org/10.18524/1810-4215.2008.21.86884

Ключові слова:

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Анотація

We analysed the spectral energy distribution of the evolved carbon star DY Per by spectral synthesis technique. The red giant shows the photometric features of R CrB type stars. We derived the atmosphere parameters of DY Per using three variants of molecular line lists. The range of Teff estimations is 2900 < Teff < 3300 K. We adopted log g = 0. The star can be metal deficient and hydrogen deficient. The highest value of carbon abundance [C]=0.94 provides the combination of atmosphere parameters {Teeff =3100 K, [Fe/H] =0, log(C/O)=0.6, [N/Fe]=0, (H/He)sun} with Jorgensen's line lists for molecules C2 and CN.

Посилання

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Опубліковано

2008-12-20

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