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Astron. Astrophys. 324, L65-L68

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Letter to the Editor

The Chemical Composition of Sakurai's Object

Tõnu Kipper1 and Valentina G. Klochkova2

1Tartu Observatory, T oravere, EE2444, Estonia
2Special Astrophysical Observatory RAS, Nizhnij Arkhyz, 357147, Russia

Received 25 February 1997 / Accepted 3 June 1997


The atmospheric parameters and elemental abundances have been derived for Sakurai's object. The atmosphere of the star was found to be H deficient with enhanced carbon and s-process abundances. The effective temperature is Teff = 7250 K, logarithmic gravity, FORMULA , and the microturbulent velocity, FORMULA km s-1. These abundances and atmospheric parameters are close to the majority of cool R CrB stars.

The chemical composition, fast brightening from the preoutburst state and the presence of PN indicates that Sakurai's object is a final helium flash object.

Key words: stars: atmospheres-stars: carbon-stars:
individual: Sakurai's obj.

© European Southern Observatory (ESO) 1997