Gas-phase mean opacity tables 
presented in Helling & Lucas 2009, MNRAS
========================================


Each metallicity directory contains a C/O-directory that contain the
tables for a number of N/O ratios.

[M/H]' = -2, -3, -4, -5

C/O = 0.43, 0.8, 0.9, 1.0, 1.1, 2.0, 10.0, 50.0 100.0

N/O = 0.14, 0.5, 1.0, 2.0, 5.0, 50.0, 100.0


Range of gas temperatures        : 10^3K ... 10^4K
Range of total hydrogen densities: 10^2cm^3 ... 10^17cm^3 

Note the metallicity definition
------------------------------
[M/H]'=log (N_M/N_H) 
with 
N_M the total number density of all the atoms heavier than He
N_H total hydrogen number density

the commonly used relative metallicity [M/H] is the:
[M/H]=[M/H]'-[M/H]_solar


Element abundances:
-------------------

Each directory contains the mean opacity tables for both, the 
Grevesse, Asplund, Sauval 2007, Space Science Review 130, p 105 data 
(Rosseland_mean.dat, RM.dat, Planck_mean.dat, PM.dat)
and for the
Cauffau et al. 2008, A&A 488, 1031
(Rosseland_mean_Caffau.dat, RM_Caffau.dat, Planck_mean_Caffau.dat, 
PM_Caffau.dat)


Data format:
------------

Each directory contains two types of data files:
Rosseland_mean.dat
 -- contain detailed outputs regarding
    Tg [K]          local gas temperature
    nHges [cm^-3]   local total hydrogen density
    Pgas  [dyn/cm2] local gas pressure
    ro    [g/cm3]   local gas density
    Xr    [cm2/g]   Rosseland mean opacity
    log Xr          log(Xr)
    lXr(lin)        log of Rosseland mean opacity for line opacities only
    l(con+sc)       log of Rosseland mean opacity for
                    continuum & scattering opacities only
    l(con)          log of Rosseland mean opacity for continuum opacity only

    NOTE: lXr(lin),l(con+sc),l(con) are NOT additive.  
 
Planck_mean.dat
 -- contain detailed outputs regarding
    Tg [K]          local gas temperature
    nHges [cm^-3]   local total hydrogen density
    Pgas  [dyn/cm2] local gas pressure
    ro    [g/cm3]   local gas density
    Xpl   [cm2/g]   Planck mean opacity
    log Xpl         log(Xpl)
    lXpl(line)      log of Planck mean opacity for line opacities only
    l(con+sc)       log of Planck mean opacity for
                    continuum & scattering opacities only
    l(con)          log of Planck mean opacity for continuum opacity only


and 

RM.dat, PM.dat which are simply a table of mean opacities in which
you very quickly can interpolate. Contact Ch Helling for getting a
interpolation routine.