Turns out, the dust modeling / RT is the hard part, but Andrea crushed it.

The short answer: conventional dust models definitely fail at reproducing massive red galaxies (DSFGs etc.). They can be reproduced, but only with some pretty extreme (unrealistic?) dust screens.

Lots more in the paper...

And indeed, there is some information in the maps, meaning we can improve on just assuming the average accretion rate at fixed mass. However, the accuracy isn't nearly what we'd like it to be... which means there just isn't enough information even in combined X-ray + SZ! The search continues...

The timing was amazing... half your figures just went onto my class slides for tomorrow :)

Happy to add you to the repo... email me

It's not public at the moment, but happy to share! Are you interested in doing something similar?

Nothing's perfect, so please let us know how we can improve Colossus-Web! There's a link to a feedback form at the bottom of the page.

We aren't planning on a release paper at this time, so please RT if you enjoy the calculator and think it's relevant to your followers!

3) Advanced cosmological parameters: different dark energy models, relativistic species, etc.

4) Advanced calculations: correlation functions, peak height, etc. Power spectra can be calculated via fitting functions or using CAMB.

So what can Colossus-Web do? A few highlights:

1) Graphical interface: you can plot tons of cosmological functions and download the data to csv files.

2) Multiple cosmologies: you can compare as many pre-programmed cosmologies as you want, or create your own.

First of all, most of the credit goes to Erik Chou, a fantastically talented UMD undergraduate. He crushed this project, and you should (try to) hire him in '25!

echou.notion.site/Erik-Chou-bb...