Interpretation of the Solar Spectrum 300 nm to 900 nm -- I Fe I LINES OF EXCITATION POTENTIAL 0{middle dot}00 eV-0{middle dot}12 eV MICROTURBULENCE, DAMPING, ABUNDANCE, TESTS OF OSCILLATOR STRENGTHS
Open Access
- 1 October 1976
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 177 (1) , 227-245
- https://doi.org/10.1093/mnras/177.1.227
Abstract
An application of new values of oscillator strengths, recently measured by the total absorption method at Oxford, to the interpretation of the solar spectrum is described. The solar micro turbulence is found to be 0·8 km s–1 at the centre of the disk and 1·2 km s–1 in integrated light. Damping enhancements for strong and medium-strong lines are derived which are close to unity and are much smaller than most current values. An iron abundance of 7·60 is obtained using the HSRA model after a correction of + 0·1 for non-LTE: the range given by four modern solar models is 7·50–7·77· The analysis is also used to examine the accuracy of presently available oscillator strengths within this range of excitation, and it is concluded that the Oxford oscillator strengths are probably correct to 0·02 dex (4·7 per cent).Keywords
This publication has 0 references indexed in Scilit: