GaussPy+: A fully automated Gaussian decomposition package for emission line spectra

Understand

Our understanding of the dynamics of the interstellar medium is informed by the study of the detailed velocity structure of emission line observations.

• One approach to study the velocity structure is to decompose the spectra into individual velocity components; this leads to a description of the dataset that is significantly reduced in complexity.
• However, this decomposition requires full automation lest it becomes prohibitive for large datasets, such as Galactic plane surveys.
• We developed GaussPy+, a fully automated Gaussian decomposition package that can be applied to emission line datasets, especially large surveys of HI and isotopologues of CO.