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 ?

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).

January 11th, 2026

Added datafiles for rotational excitation of D13CO+ by para-H2 (Denis-Alpizar et al. 2020) and electrons (Fuente et al. 2008).