Iron Lines and Surface Gravity Determination for τ Ceti

Bibcode
1988IAUS..132..445A
Arribas, S.; Martinez-Roger, C.
Bibliographical reference

The Impact of Very High S/N Spectroscopy on Stellar Physics: Proceedings of the 132nd Symposium of the International Astronomical Union held in Paris, France, June 29-July 3, 1987. Edited by G. Cayrel de Strobel and Monique Spite. International Astronomical Union. Symposium no. 132, Kluwer Academic Publishers, Dordrecht., p.445

Advertised on:
0
1988
Number of authors
2
IAC number of authors
0
Citations
2
Refereed citations
2
Description
The authors present a spectroscopic analysis for the gravity determination of τ Ceti on the basis of a new and high quality set of data. The iron lines are studied by using the Oxford oscillator strengths. The results are compared with those obtained with "solar" oscillator strengths. Non-LTE effects seem to be important in this star. The Fe I at λ526.955 nm line is used to apply the Blackwell and Willis (1977) method to determine the surface gravity. The derived log g is 4.70±0.1.
Type
Non-refereed

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