GLEAM: Galaxy Line Emission & Absorption Modeling

Abstract We present Galaxy Line Emission & Absorption Modeling ( gleam ), a Python tool for fitting Gaussian models to emission and absorption lines in large samples of 1D extragalactic spectra. is tailored work well batch mode without much human interaction. With , users can uniformly process variety spectra, including galaxies active galactic nuclei, wide range instrument setups signal-to-noise regimes. also takes advantage multiprocessing capabilities spectra parallel. the goal enabling reproducible workflows its users, employs small number input files, central, user-friendly configuration which constraints be defined groups overrides specified edge cases. For each spectrum, produces table containing measurements error bars detected spectral continuum upper limits nondetections. visual inspection publishing, produce plots data with fitted overlaid. In paper, we describe ’s main features, necessary inputs, expected outputs, some example applications, thorough tests on sample optical/infrared multi-object spectroscopic observations integral field data. developed as an open-source project hosted at https://github.com/multiwavelength/gleam welcomes community contributions.