Carbon and oxygen isotopic ratios in Arcturus and Aldebaran - Constraining the parameters for non-convective mixing on the red giant branch

C. Abia; S. Palmerini; M. Busso; S. Cristallo

doi:10.1051/0004-6361/201220148

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Volume 548 (December 2012)

A&A, 548 (2012) A55

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Fig. 1

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Comparison of observed (dots) and synthesized spectra (lines) of Arcturus for different O ratios. Dotted line: ¹²C/¹³C = 9 and ¹⁷O/¹⁶O = ¹⁸O/¹⁶O = 0; continuos line: the same ¹²C/¹³C with ¹⁷O/¹⁶O = 3030, ¹⁸O/¹⁶O = 1660. Note that the cores of the more intense CO lines are not reproduced by the theoretical spectrum (see text). Some of the C¹⁷O and C¹⁸O lines used are marked.

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