The ATMO 2020 model spectra are cool T-Y brown dwarfs and giant exoplanets in radiative-convective equilibrium. The wavelengths are in Angstroms, and fluxes are in units of erg/s/cm^2/A, after converting original units from microns and Watts/meter^2/micron. The models were generated using solar metalicity and have a temperature range from 200 K to 2000 K, as recommended by the authors. The log(g) values for the models are all 5.0.

References
M.W. Phillips et al. 2020, A&A 637, A38

FILENAME                 |  TEMP (K) |  log(g) |
------------------------------------------------
spec_t200_lg5.0_ceq.fits |    200    |    5.0  |
spec_t250_lg5.0_ceq.fits |    250    |    5.0  |
spec_t300_lg5.0_ceq.fits |    300    |    5.0  |
spec_t350_lg5.0_ceq.fits |    350    |    5.0  |
spec_t400_lg5.0_ceq.fits |    400    |    5.0  |
spec_t450_lg5.0_ceq.fits |    450    |    5.0  |
spec_t500_lg5.0_ceq.fits |    500    |    5.0  |
spec_t550_lg5.0_ceq.fits |    550    |    5.0  |
spec_t600_lg5.0_ceq.fits |    600    |    5.0  |
spec_t700_lg5.0_ceq.fits |    700    |    5.0  |
spec_t800_lg5.0_ceq.fits |    800    |    5.0  |
spec_t900_lg5.0_ceq.fits |    900    |    5.0  |
spec_t1000_lg5.0_ceq.fits|   1000    |    5.0  |
spec_t1100_lg5.0_ceq.fits|   1100    |    5.0  |
spec_t1200_lg5.0_ceq.fits|   1200    |    5.0  |
spec_t1300_lg5.0_ceq.fits|   1300    |    5.0  |
spec_t1400_lg5.0_ceq.fits|   1400    |    5.0  |
spec_t1500_lg5.0_ceq.fits|   1500    |    5.0  |
spec_t1600_lg5.0_ceq.fits|   1600    |    5.0  |
spec_t1700_lg5.0_ceq.fits|   1700    |    5.0  |
spec_t1800_lg5.0_ceq.fits|   1800    |    5.0  |
spec_t1900_lg5.0_ceq.fits|   1900    |    5.0  |
spec_t2000_lg5.0_ceq.fits|   2000    |    5.0  |