Solar Mn I 5432/5395 Å line formation explained

Details Solar Mn I 5432/5395 Å line formation explained Solar Mn I 5432/5395 Å line formation explained

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...369l..13d&link_type=abstract

Astronomy and Astrophysics, v.369, p.L13-L16 (2001)

Astronomy and Astrophysics

Astrophysics

16

Mn I Line Formation, Solar Chromosphere, Nlte Modelling, Radiative Interaction

Scientific paper

We present a solution for the long standing problem concerning the ``chromospheric'' behaviour of the Mn i 5395/5432 Å lines in the solar spectrum using multi-line/multi-species NLTE modelling. Using comprehensive spectral line formation modelling, we show that the Mn i lines are very sensitive to optical pumping in a transition which overlaps with Mg ii k. It therefore follows that one has to be careful with the choice of lines as temperature indicators and for the determination of the Mn abundances although on the other hand, due to the formation process of these lines they may be useful as a solar and stellar activity diagnostic.

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