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

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

Research output: Contribution to journalArticlepeer-review


We present the results of our analysis of a high resolution (R≃30 000) 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.
Original languageEnglish
Pages (from-to)L39-L43
JournalAstronomy and Astrophysics
Issue number3
Publication statusPublished - 1 Apr 2004


  • stars: individual (V4334 Sqr)
  • stars: individual: Sakurai's Object
  • stars: atmospheric parameters
  • stars: abundance


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