NLTE abundance corrections for four lines of Na I in the MARCS model atmospheres.

NLTE method was treated by Alexeeva+ (2014, Astron. Lett. 40, 406). Na I + H I collisions from QM calculations.

The Na abundance was varied in the NLTE calculations from [Na/Fe] = -0.6 to [Na/Fe] = +0.6.

Grid I was computed for
Teff = 5000 to 6500~K, with a 250 K step, 
log g = 3.0 to 5.0, with a 0.5 step, 
[Fe/H] = -2.0, -2.5, -3.0, -4.0
and
Teff = 5000, 5270, 5500
log g = 2.5
[Fe/H] = -2.0, -2.5, -3.0, -4.0.
The data are available in
na_dnlte5000_6500g2.5_5.0_m0.6.dat for [Na/Fe] = -0.6
na_dnlte5000_6500g2.5_5.0_m0.3.dat for [Na/Fe] = -0.3
na_dnlte5000_6500g2.5_5.0_p0.0.dat for [Na/Fe] = +0.0
na_dnlte5000_6500g2.5_5.0_p0.3.dat for [Na/Fe] = +0.3
na_dnlte5000_6500g2.5_5.0_p0.6.dat for [Na/Fe] = +0.6
Everywhere, xi_t = 1.0 km/s.

Grid II was computed for
Teff = 4000 to 4750 K, with a step of 250 K,
log g = 0.5 to 2.5, step 0.5,
[Fe/H] = -2.0 to -4.0, step 0.5,
and
Teff = 5000 K
log g = 0.5 to 2.5, step 0.5,
[Fe/H] = -2.0, -2.5, -3.0, -4.0.
The data are available in
na1_dnlte4000_5000g0.5_2.5_m0.6.dat for [Na/Fe] = -0.6
na1_dnlte4000_5000g0.5_2.5_m0.3.dat for [Na/Fe] = -0.3
na1_dnlte4000_5000g0.5_2.5_p0.0.dat for [Na/Fe] = +0.0
na1_dnlte4000_5000g0.5_2.5_p0.3.dat for [Na/Fe] = +0.3
na1_dnlte4000_5000g0.5_2.5_p0.6.dat for [Na/Fe] = +0.6
Everywhere, xi_t = 2 km/s.

The files have similar structure. The 1st string for each metallicity gives the NLTE equivalent widths in mA and the 2nd string the NLTE abundance corrections: NLTE - LTE (dex). The NLTE corrections are provided for lines with EW(NLTE) > 3 mA. The numbers -1 and -1.000 mean EW(NLTE) < 3 mA.