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arXiv · 1001.1668

First Overtone CO Bands in the Giant Component of RS Ophiuchi: the 12C/13C Ratio in 2008

Ya. V. Pavlenko·Charles E. Woodward·M. T. Rushton·B. Kaminsky·A. Evans
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Abstract

We present an analysis of a high resolution (R = 40000) infrared spectrum of the RS Oph secondary around the first overtone CO bands, obtained in 2008 May on the Gemini South 8 m. The 12CO and 13CO bands are well-resolved, and we compute synthetic spectra to determine the 12C/13C ratio. We find 12C/13C = 16 +/- 3, consistent with the interpretation of the secondary as red giant which has evolved beyond the first drege-up phase of evolution.

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Ya. V. Pavlenko, Charles E. Woodward, M. T. Rushton, B. Kaminsky, A. Evans. 2010-01-11. First Overtone CO Bands in the Giant Component of RS Ophiuchi: the 12C/13C Ratio in 2008. https://doi.org/10.1111/j.1365-2966.2010.16329.x

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