I found that there are some subhaloes with 'SubhaloMass_Gas' equal to 0. Could you explain why this happens? Is it due to the resolution? Or should I consider dropping these data points directly? Additionally, I noticed that some black holes have very high accretion rates even though there is no gas, which seems unreasonable (no fuel but high accretion seems impossible).
Anindita Nandi
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Dylan Nelson
10 Sep
A similar point is discussed in this thread with respect to stars.
For gas, it is particularly likely and common that stripping (tidal and/or ram-pressure) removes the gas from subhalos, if they are satellites.
This could also be an explanation for non-zero SMBH accretion rates: these are based on the N nearest gas cells (regardless of membership to the parent subhalo of the SMBH). So even if a satellite subhalo has no gas, it will be surrounded by the gas of its host.
怡远 张
11 Sep
I understand what you mean now; this is very helpful. Thank you!
Hi Nelson!
I found that there are some subhaloes with 'SubhaloMass_Gas' equal to 0. Could you explain why this happens? Is it due to the resolution? Or should I consider dropping these data points directly? Additionally, I noticed that some black holes have very high accretion rates even though there is no gas, which seems unreasonable (no fuel but high accretion seems impossible).
A similar point is discussed in this thread with respect to stars.
For gas, it is particularly likely and common that stripping (tidal and/or ram-pressure) removes the gas from subhalos, if they are satellites.
This could also be an explanation for non-zero SMBH accretion rates: these are based on the N nearest gas cells (regardless of membership to the parent subhalo of the SMBH). So even if a satellite subhalo has no gas, it will be surrounded by the gas of its host.
I understand what you mean now; this is very helpful. Thank you!