A Bayesian Population Model for the Observed Dust Attenuation in Galaxies

  title={A Bayesian Population Model for the Observed Dust Attenuation in Galaxies},
  author={Gautam Nagaraj and John C. Forbes and Joel Leja and Daniel Foreman-Mackey and Christopher C. Hayward},
  journal={The Astrophysical Journal},
Dust plays a pivotal role in determining the observed spectral energy distribution (SED) of galaxies. Yet our understanding of dust attenuation is limited and our observations suffer from the dust–metallicity–age degeneracy in SED fitting (single galaxies), large individual variances (ensemble measurements), and the difficulty in properly dealing with uncertainties (statistical considerations). In this study, we create a population Bayesian model to rigorously account for correlated variables… 

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