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SHAM scatter
Description
Implement Gaussian scatter between the halo and galaxy proxies in the SHAM assignment.
Inputs
- Galaxy proxy: luminosity or stellar mass.
Outputs
- Galaxy proxy including scatter.
References
For stellar mass-based SHAM: Behroozi et al. 2010 (https://arxiv.org/pdf/1001.0015.pdf) For luminosity-based SHAM: Trujillo-Gomez et al. 2011 (https://arxiv.org/pdf/1005.1289)