TreeFrog: Construct halo merger trees and compare halo catalogs

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Ada Coda
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TreeFrog: Construct halo merger trees and compare halo catalogs

Post by Ada Coda » Wed Dec 04, 2019 10:53 pm

TreeFrog: Construct halo merger trees and compare halo catalogs

Abstract: TreeFrog reads in particle IDs information between various structure catalogs and cross matches catalogs, assuming that particle IDs are unique and constant across snapshots. Though it is built as a cross correlator (in that it can match particles across several different catalogs), its principle use is as halo merger tree builder. TreeFrog produces links between objects found at different snapshots (or catalogs) and uses several possible functions to evaluate the merit of a link between one object at a given snapshot (or in a given catalog) to another object in a previous snapshot (or different catalog). It can also produce a full graph. The code utilizes MPI and OpenMP. It is optimzed for reading VELOCIraptor (ascl:1911.020) output but can also read output from other structure finders such as AHF (ascl:1102.009).

Credit: Elahi, Pascal Jahan; Poulton, Rhys; Tobar, Rodrigo

Site: https://github.com/pelahi/TreeFrog
https://ui.adsabs.harvard.edu/abs/2019arXiv191110281P

Bibcode: 2019ascl.soft11021E

ID: ascl:1911.021

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