Tootfinder

Impact of Uncertainties in Spectral Energy Distribution Modelling on Inferred Galaxy Properties
Gareth T. Jones, Conor M. Byrne, Elizabeth R. Stanway
https://arxiv.org/abs/2509.02741

Impact of Uncertainties in Spectral Energy Distribution Modelling on Inferred Galaxy Properties
Interpreting galaxy properties from astronomical surveys relies heavily on spectral energy distribution (SED) modelling, yet uncertainties in key model ingredients are often overlooked. By leveraging a $z\sim0$ galaxy sample from the EAGLE simulation, we generate synthetic SDSS spectral and VISTA photometric observations with controlled assumptions, to assess how variations in stellar spectral library, initial mass function (IMF) and metallicity prescriptions within the BPASS-framework affect i…