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

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.

arXiv comment5 pages, 7 figs, accepted by AAL

References in corpus (6)

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• Carbon Monoxide bands in M dwarfs
• Carbon abundances and 12C/13C from globular cluster giants
• The spectrum of V4334 Sgr (Sakurai's object) in August, 1998
• Models of infrared spectra of Sakurai's Object (V4334 Sgr) in 1997

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