How could I compute the total baryonic mass and total DM mass for the TNG300-2 simulated box in a redshift z=0? I did not find these values in the documentation.

Dylan Nelson

20 Jul '20

Hello,

Do you mean in the entire simulation? You could compute these using the cosmological parameters (e.g. Omega_b and Omega_m).

More straightforward, you can just load the Masses field for all particles of types 0,4,5 for the baryons, and MassTable[1]*NumPart[1] (from the Header of the snapshot) for the dark matter.

Hi Dylan,

How could I compute the total baryonic mass and total DM mass for the TNG300-2 simulated box in a redshift z=0? I did not find these values in the documentation.

Hello,

Do you mean in the entire simulation? You could compute these using the cosmological parameters (e.g.

`Omega_b`

and`Omega_m`

).More straightforward, you can just load the

`Masses`

field for all particles of types`0,4,5`

for the baryons, and`MassTable[1]*NumPart[1]`

(from the`Header`

of the snapshot) for the dark matter.