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CO bands in V4334 Sgr (Sakurai's Object): the 12C/13C ratio

Ya. V. Pavlenko·T. R. Geballe·A. Evans·B. Smalley·S. P. S. Eyres·V. H. Tyne·L. A. Yakovina
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Abstract

We present the results of our analysis of a high resolution (R ~ 30000) infrared spectrum of V4334 Sgr (Sakurai's Object) around the first overtone CO bands, obtained in 1998 July. The 12CO and 13CO bands are well-resolved, and we compute synthetic hydrogen-deficient model atmosphere spectra to determine the 12C/13C ratio. We find 12C/13C ~ 4 +/-1, consistent with the interpretation of V4334 Sgr as an object that has undergone a very late thermal pulse.

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Ya. V. Pavlenko, T. R. Geballe, A. Evans, B. Smalley, S. P. S. Eyres, V. H. Tyne, L. A. Yakovina. 2004-02-26. CO bands in V4334 Sgr (Sakurai's Object): the 12C/13C ratio. https://doi.org/10.1051/0004-6361%3A20040078

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