EMAA is a database for line radiative transfer studies in the radio and infrared spectral ranges. It includes collisional and spectroscopic data for atoms and molecules of astrophysical interest.

What's new ?

February 27th, 2026

Added datafiles for rotational excitation of CH3CHCH2O by He and para-H2 (Dzenis et al. 2022).

January 23th, 2026

Added datafiles for hyperfine excitation of NS by He and para-H2 (Hily-Blant et al. 2022).

January 22th, 2026

Added datafiles for rotational excitation of C4H- by para-H2 and ortho-H2 (Balança et al. 2021).