I am hoping you could clarify the definition of SubhaloMass and Group_M_Crit200 for a central galaxy.
I understand the first gives the sum of bound particles to the central subhalo, and the second is a spherical overdensity calculation.
Do either or both of these masses include the mass of satellites?
Best wishes,
Ellen
Dylan Nelson
24 Mar
Group_M_Crit200 (i.e. all SO quantities) are based on all particles/cells in the simulation, so yes if a satellite is within R200c, then it will be included.
SubhaloMass of a central, by definition, excludes the masses of all satellite subhalos (as determined by Subfind).
Dear TNG collaboration,
I am hoping you could clarify the definition of SubhaloMass and Group_M_Crit200 for a central galaxy.
I understand the first gives the sum of bound particles to the central subhalo, and the second is a spherical overdensity calculation.
Do either or both of these masses include the mass of satellites?
Best wishes,
Ellen
Group_M_Crit200 (i.e. all SO quantities) are based on all particles/cells in the simulation, so yes if a satellite is within R200c, then it will be included.
SubhaloMass of a central, by definition, excludes the masses of all satellite subhalos (as determined by Subfind).
Great, thank you very much for clarifying.
Cheers,
Ellen