- #1
matteo86bo
- 60
- 0
Hi,
I have a catalog of dark matter halos, which consists of their COM positions and their masses.
I need to determine the halo mass function. How can I do? I mean, it is easy to plot the number of halos between mass M and M+dM, but how can I have information on the volume? I don't get it.
Similarly, how can I determine the SFH in terms of solar masses per year per volume, when my stellar catalog contains only stars positions and their birthdate? I mean the problem it is alway the volume.
I know it is a stupid question but I really don't get it.
Thanks in advance
I have a catalog of dark matter halos, which consists of their COM positions and their masses.
I need to determine the halo mass function. How can I do? I mean, it is easy to plot the number of halos between mass M and M+dM, but how can I have information on the volume? I don't get it.
Similarly, how can I determine the SFH in terms of solar masses per year per volume, when my stellar catalog contains only stars positions and their birthdate? I mean the problem it is alway the volume.
I know it is a stupid question but I really don't get it.
Thanks in advance