An Older, More Quiescent Universe from Panchromatic SED Fitting of the 3D-HST Survey

Understand

Galaxy observations are influenced by many physical parameters: stellar masses, star formation rates (SFRs), star formation histories (SFHs), metallicities, dust, black hole activity, and more.

• As a result, inferring accurate physical parameters requires high-dimensional models which capture or marginalize over this complexity.
• Here we re-assess inferences of galaxy stellar masses and SFRs using the 14-parameter physical model Prospector-$\alpha$ built in the Prospector Bayesian inference framework.
• We fit the photometry of 58,461 galaxies from the 3D-HST catalogs at $0.5 < z < 2.5$.