CO bands in V4334 Sgr (Sakurai's Object): The \mathsf¹²C/\mathsf¹³C ratio

2004/02/26 by Ya. V. Pavlenko, T. R. Geballe, A. Evans +4 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:20040078

published as Astron.Astrophys. 417 (2004) L39-L44 · 5 pages, 7 figs, accepted by AAL

arxiv created 2004/02/26 · openalex publication_date 2004/03/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present the results of our analysis of a high resolution () 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.

Citations

• Carbon abundances and12C/13C from globular cluster giants
• The Evolutionary Timescale of Sakurai’s Object: A Test of Convection Theory?

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