I have noted that the computed method of the gas temperature in the FAQ. The hydrogen mass fraction is set to 0.76 for all particles. However, with the field GFM_Metals, can't we get the correct value for every particle?

Yes this is true, GFM_Metals[0] contains a better estimate of X_H, but (i) note that this is a correction at the level of <1%, and (ii) this field is available only in full (not mini) snapshots.

Qin PENG

21 Dec '20

Thank you. Maybe we can get a better estimate of gas temperature in the full snapshots.

Hi Dylan,

I have noted that the computed method of the gas temperature in the FAQ. The hydrogen mass fraction is set to 0.76 for all particles. However, with the field GFM_Metals, can't we get the correct value for every particle?

Hello,

Yes this is true,

`GFM_Metals[0]`

contains a better estimate of`X_H`

, but (i) note that this is a correction at the level of <1%, and (ii) this field is available only in full (not mini) snapshots.Thank you. Maybe we can get a better estimate of gas temperature in the full snapshots.