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 ?

November 28th, 2025

Added datafiles for rotational excitation of H₂D⁺ and D₂H⁺ by electrons (Znotins et al. 2025).

October 21th, 2025

Added datafiles for fine excitation of C₂O by He and para-H₂ (Veselinova et al. 2025).

August 4th, 2025

Added datafiles for hyperfine excitation of HCN by para- and ortho-H₂ at high temperature (Goicoechea et al. 2022).