Takes kinematic data of galaxies and overlays their individual phase spaces--clustercentric-radius and line-of-sight velocity--on top of each other ("stacking"), to create an ensemble phase space or ensemble cluster. It then runs the caustic technique on the ensemble cluster's phase space. At the most basic level, this code needs only radius and velocity data of galaxies from multiple clusters.

version : 0.1

Download caustic_stack/ from github:

$ git clone https://github.com/nkern/caustic_stack

Add location of directory to path. In bash, append this to your ~/.bashrc or ~/.bash_profile:

export PYTHONPATH=/where_caustic_stack_lives/:$PYTHONPATH

See causticpy's requirements for basic dependencies: https://github.com/giffordw/CausticMass

In addition, you need DictEZ.py and AttrDict.py, found in caustic_stack/

See RunningTheCode.pdf to see the outline of the code and worked examples.

Nicholas Kern, University of Michigan

Daniel Gifford, University of Michigan

Christopher Miller, University of Michigan

Alejo Stark, University of Michigan

Copyright 2014, the authors.