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

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

2004-02-26

arxiv.org/abs/astro-ph/0402624v1

Astron.Astrophys. 417 (2004) L39-L44

Astronomy and Astrophysics

Astrophysics

5 pages, 7 figs, accepted by AAL

Scientific paper

10.1051/0004-6361:20040078

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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