[yt-users] Regarding MergerTree() parameters.

[Reju Sam John]

Dear all,

I would like to get few clarification on
yt.analysis_modules.halo_merger_tree.merger_tree.MergerTree()

1) MergerTree() has a parameter halo_finder_threshold. Does this something
synonym to virial overdensity(like M200 or R200 ) ?
2) FOF_link_length parameter for halo_finder_function = FOFHaloFinder.
The default value is 0.2.
My doubt is, 0.2 is in which unit ? Is it in code unit or Mpc ?

And also halo_finder_function = HaloFinder and  halo_finder_function =
FOFHaloFinder are giving entirely different value for the  Group Mass in
the MergerHalo.out (a difference of more than one order of magnitude)


thank you.


-- 
Reju Sam John
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