Results of the calculations used for the analysis presented in the paper "The effect of the environment-dependent IMF on the formation and metallicities of stars over the cosmic history" by Chruslinska, M., Jerabkova, T., Nelemans, G., Yan, Z., 2020, A&A
If you use this data in your research please reference the above paper.

The values in each file correspond to number density (comoving; 1/Mpc^3) of the stars with masses between 20 and 120 solar mass formed in a given 12+log(O/H) (columns) bin and between two redshifts (rows).
The enclosed python script plot_n_Z_z.py can be used to visualize the data. The attached Time_redshift_deltaT.dat is required to run the python script.

File names: 
    non-universal IMF: [X][Y][Z]w14vIMF[IGIMF][OH2FeH]_FOH_z_dN_above_20.dat 
    universal IMF: [X][Y][Z]w14_FOH_z_dN_above_20.dat 

X,Y and Z specify the model variation from Chruslinska & Nelemans (2019).
X specifies the choice of the high mass part of the SFMR:
    X=1 : moderate flattening
    X=2 : sharp flattening
    X=3 : no flattening

Y specifies choice of the low mass end of the GSMF:
    Y=0 : alpha_fix = -1.45
    Y=1 : alpha_fix = alpha_fix(z)

Z specifies the choice of the MZR:
    Z=1 : T04 
    Z=2 : KK04
    Z=3 : M09
    Z=4 : PP04

IGIMF specifies the version of the IGIMF model used to describe the environment-dependent IMF and calculate the corrections to SFR.
    IGIMF=2 : IGIMF2 model (fixed low-to-intermediate mass part of the IMF)
    IGIMF=3 : IGIMF3 model (full mass range of the IMF varies with metallicity; default choice in the paper)
see Jerabkova et al. (2018) for more details.

OH2FeH specifies the applied conversion between 12 + log(O/H) and [Fe/H] metallicity scales:
    OH2FeH = sol : conversion assumes [O/H]=[Fe/H]
    OH2FeH = aeh : conversion described in Sec. 2.4 Chruslinska et al. (2020) (with alpha-enhancement at low metallicities; default choice in the paper)


e.g. 302w14vIMF3aeh_FOH_z_dN_above_20.dat and 204w14vIMF3aeh_z_dN_above_20.dat are the data files corresponding to the
high-Z extreme and low-Z extreme in the non-universal IMF scenario discussed in the main text (IGIMF3 model and metallicity conversion with alpha enhancement; used e.g. in Fig. 5 & 6 in Chruslinska et al. (2020)).
The corresponding universal IMF files are 302w14_FOH_z_dN_above_20.dat and 204w14_FOH_z_dN_above_20.dat

