This readme file describes the contents of the directory
sb_models_grid1 which contains the starburst models computed with the
method of Efstathiou, Rowan-Robinson & Siebenmorgen (2000, MNRAS, 313,
734) but for a range of giant molecular cloud (GMC) masses and
densities.  The models are available as a tar archive
(sb_models_grid1.tar).

The models incorporate the stellar population synthesis model of
Bruzual & Charlot, 1993, ApJ, 405, 538. The treatment of the small
grains and PAHs is according to Siebenmorgen & Krugel, 1992, AA, 259,
614.

The naming scheme of the various files is self explanatory. For example

salp_t=10Myrs_tv=50.spec 

is the sed for a 10Myrs old starburst in which the initial optical
depth of its constituent GMCs is 50 (corresponding to assumed
parameters eta=0.25,n_av=300,M_GMC=10^7). All models assume an
e-folding time of 20Myrs. A Salpeter IMF and a mass range of 0.1-125
solar masses is assumed throughout.

Each file lists the predicted spectra emitted by a starburst in which
the star formation rate at t=0 is 1 solar mass per year. The first
column is the wavelength in microns and the second column is nuL_nu.
The two integers at the top of the file are the number of spectra
listed (in this case one) and the number of wavelength grid points (in
this case 84).