The group catalogs of Illustris/TNG are not made with CAESAR, they are made by the simulations directly.
It seems that CAESAR can also analyze simulation snapshots to produce its catalogs, but I don't know of anyone who has attempted this for these simulations (from a quick reading, I do not think it would work on the larger simulations).
Are the HDF5 files giving the group catalog compatible with the CAESAR software (https://caesar.readthedocs.io/en/latest/index.html)
Hello Patrice,
The group catalogs of Illustris/TNG are not made with CAESAR, they are made by the simulations directly.
It seems that CAESAR can also analyze simulation snapshots to produce its catalogs, but I don't know of anyone who has attempted this for these simulations (from a quick reading, I do not think it would work on the larger simulations).
Hello Dylan,
Many thanks.
Patrice