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 ?

December 22th, 2025

Added datafiles for hyperfine excitation of CH by electrons (Jacob et al. 2024).

December 19th, 2025

Added datafiles for rotational excitation of HCS+ by para-H2 (Denis-Alpizar et al. 2022).

December 17th, 2025

Added datafiles for rotational excitation of HCNO by para-H2 and ortho-H2 (Dagdigian 2025).