I want to calculate the Ram pressure exerted on a satellite within a given cluster by calculating the mean velocity of the medium that is at larger distances than 20 times the half mass radius of the satellite. However, I would like to consider just the contribution of the unbound cells by neglecting the contribution of all those cells that are bound to a satellite galaxy. How could I know if a gas cell of the halo is bounded to a satellite?
Thanks in advance,
Pablo
Dylan Nelson
3 Nov '21
Dear Pablo,
If you load all particles/cells which belong to the central subhalo, instead of the entire FoF halo, then by definition this excludes particles bound to all satellites.
I also suggest to check out Ayromlou+2019 for some discussions on this calculation and a method to do this exclusion more cleanly.
Pablo Galan de Anta
3 Nov '21
Dear Dylan,
many thanks for your answer. I was using the definition of Yun+2019, but I think the definition they use of ram pressure is practically the same as the one in Ayromlou+2019.
Hi,
I want to calculate the Ram pressure exerted on a satellite within a given cluster by calculating the mean velocity of the medium that is at larger distances than 20 times the half mass radius of the satellite. However, I would like to consider just the contribution of the unbound cells by neglecting the contribution of all those cells that are bound to a satellite galaxy. How could I know if a gas cell of the halo is bounded to a satellite?
Thanks in advance,
Pablo
Dear Pablo,
If you load all particles/cells which belong to the central subhalo, instead of the entire FoF halo, then by definition this excludes particles bound to all satellites.
I also suggest to check out Ayromlou+2019 for some discussions on this calculation and a method to do this exclusion more cleanly.
Dear Dylan,
many thanks for your answer. I was using the definition of Yun+2019, but I think the definition they use of ram pressure is practically the same as the one in Ayromlou+2019.
Thanks,
Pablo