Summary: A&A manuscript no.
(will be inserted by hand later)
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08 ( 08.12.1 ; 08.01.2 ; 08.03.3 ; 02.12.1 )
Chromospheric modelling of the Hff and Na I D lines in five
M dwarfs of low to high activity level
C. I. Short 1 and J. G. Doyle 2
Department of Physics & Astronomy -- University of Georgia -- Athens, GA, 306022451, USA
Armagh Observatory -- College Hill -- Armagh BT61 9DG -- N. Ireland
Received !date? ; accepted !date?
Abstract. We have obtained simultaneous high resolu
tion Hff and Na I D spectra of five dwarf M stars that span
a wide range in chromospheric activity level. The observed
Na I D lines exhibit behavior that is qualitatively similar