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Description
We compare 237 Lyman-{alpha} (Ly{alpha}) spectra of the "MUSE-Wide survey" (Herenz et al., 2017, Cat. J/A+A/606/A12) to a suite of radiative transfer simulations consisting of a central luminous source within a concentric, moving shell of neutral gas, and dust. This six parameter shell-model has been used numerously in previous studies, however, on significantly smaller data-sets. We find that the shell-model can reproduce the observed spectral shape very well - better than the also common 'Gaussian-minus-Gaussian' model which we also fitted to the dataset. Specifically, we find that ~94% of the fits possess a goodness-of-fit value of p(chi^2^)>0.1. The large number of spectra allows us to robustly characterize the shell-model parameter range, and consequently, the spectral shapes typical for realistic spectra. We find that the vast majority of the Ly{alpha} spectral shapes require an outflow and only ~5% are well-fitted through an inflowing shell. In addition, we find ~46% of the spectra to be consistent with a neutral hydrogen column density <10^17^cm^-2^ -- suggestive of a non-negligible fraction of continuum leakers in the MUSE-Wide sample. Furthermore, we correlate the spectral against the Ly{alpha} halo properties against each other but do not find any strong correlation.
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