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The file AGN_NLR_nebular_feltre16.tar.gz in this directory contains the 
values of some of the most commonly used optical and ultraviolet emission-lines
predicted by models of nebular emission from the narrow-line emitting regions
of AGN (presented in Feltre et al. 2016).  These models have been computed using
the latest version of the photoionization code CLOUDY (Ferland et al. 2013)
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For further details on the model parameters, please see:
Feltre, A., Charlot, S., Gutkin, J. 2016, MNRAS, 456, 3354

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*********************** DESCRIPTION OF MODEL FILES *****************************
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AGN_NLR_nebular_feltre16.tar.gz contains 16 files, each corresponding to given
value of the interstellar gas metallicity Z, specifically:

Z= 0.0001, 0.0002, 0.0005, 0.001, 0.002, 0.004, 0.006, 0.008, 0.014, 0.017, 
0.02, 0.03, 0.04, 0.05, 0.06, 0.07.

The file names are built as follows:
nlr_nebular_Zaaa.txt, where aaa are the digits after the decimal point of the 
value of the interstellar gas metallicity, for example: 
nlr_nebular_Z020.txt corresponds to  Z=0.02

Each model file contains 24 columns:

col.1: log(Us), logarithmic value of the ionization parameter

col.2: xid, dust-to-metal mass ratio

col.3: nh, hydrogen gas density

col.4: alpha, UV spectral index defined as F_nu \propto nu^alpha

cols 5-24: predicted intensities of 20 optical and ultraviolet emission-lines 
(in units of erg/s and corresponding to an accretion luminosity of the central
source of 10^45 erg/s; line luminosities scale linearly with this quantity),
specifically:

[OII]3727 Hbeta [OIII]4959 [OIII]5007 [OI]6300 [NII]6548 Halpha [NII]6584 
[SII]6717 [SII]6731 NV1240 CIV1548 CIV1551 HeII1640 OIII]1661 OIII]1666 
[SiIII]1883 SiIII]1888 [CIII]1907 CIII]1910