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Iron Lines and Surface Gravity Determination for τ Ceti
1988
Symposium - International astronomical union
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We 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 Fel at λ 526.955 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.
doi:10.1017/s0074180900035452
fatcat:mh6kaloggnholjeqfn4jpcb3su