#extragalactic ☄️

is the take here "people shouldn't be expected to actually read papers before citing them" ?

* hides *

Wait... there's been a misunderstanding

appears to be down again today, is there somewhere we can get live updates on outages?

I want one!

Professional astrophysicist at the U. Portsmouth

yes

There is still work to do in order to apply this pipeline to observations directly (which we're working on..) but these results suggest that there is interesting cosmological information in galaxy star formation and metal enrichment histories, and subsequently the observables ✨

We also explore the feature importance, and find that it is the colour distributions that drive the tight constraints on omega_m and sigma_8

We then perform Simulation Based Inference (SBI) on the luminosity functions and colour distributions, and find interesting results for sigma-8, describing the clustering of matter - this is despite the lack of any spatial information in these distributions

We believe (!) that this dataset represents the largest catalogue of synthetic photometry based on hydrodynamic galaxy formation simulations produced to date.

We first forward model the UV-NIR rest- and observer-frame photometry from over 200 million sources in the CAMELS simulations. These catalogues are now publicly available:

camels.readthedocs.io/en/latest/ph...