Programs and Scripts:
-
C:
ew.c
-- This program uses the curve of growth method (see Spitzer 1968) to interpolate
along
the curve to find the corresponding line-center optical depth, given a
doublet ratio. It
is tailored for the Na D doublet at 5890 & 5896 Angstroms, but can
be changed for other
doublet (eg. Ca H & K). The program also interpolates to get
the b-value and the column
density of Na I, according to Spitzer's curves of growth. The
data used, doublet.data, is
produced directly from the integrals for the curves of growth givein Spitzer,
using
Mathematica 4.0. For the data files (4.1 Mb), e-mail
me.
...more to come!