The Outer Stellar Mass of Massive Galaxies: A SimpleTracer of Halo Mass with Scatter Comparable to Richnessand Reduced Projection Effects

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• Code, Jupyter Notebooks, and Data for reproducing the results for: "The Outer Stellar Mass of Massive Galaxies: A Simple Tracer of Halo Mass with Scatter Comparable to Richness and Reduced Projection Effects" (Huang et al. in prep).

  • Huang, Song (黄崧); Leauthaud, Alexie; Bradshaw, Christopher; Hearin, Andrew; Behroozi, Peter; Lange, Johannes; Greene, Jenny; DeRose, Joseph; Speagle (沈佳士), Joshua; Xhakaj, Enia

• The large data files that are necessary to reproduce our results can be found in this Zenodo repo

• Please contact the authors if you have any questions about the code or the data.

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Baisc Structures

• jianbing: include all the codes used for this work and other TopN tests.

  • Most important codes for lensing analysis can be found under wlensing.py and scatter.py.
  • Our code depends on the dsigma galaxy-galaxy lensing package.

• paper:

  • LaTeX source files of the TopN paper. (Will become available after submission).

• notebooks: all the Jupyter notebooks for the TopN tests.

  • figure include all the notebooks for making figures in our paper.
  • topn_result_summary.ipynb summarizes all the key results of the TopN tests.

• script: Python scripts for pre-computing the galaxy-galaxy lensing profiles and performing the TopN tests.

  • prepare_source_random.py: prepare the source and random catalogs. This creates the s16a_weak_lensing_medium.hdf5 file that can be found in the Zenodo repo.
  • precompute_lens_public.py: pre-compute the lensing profiles for different catalogs of galaxies and galaxy clusters.
  • compute_dsigma_galaxies.py and compute_dsigma_clusters.py: perform TopN tests for galaxies and clusters.

• data: TopN tests results and other useful data files.

  • results: pickle files for different groups of TopN tests results.
  • simulation: lensing profiles and halo mass distributions of halos from MDPL2 and SMDPL N-body simulations.
  • bins: definitions of the default four TopN bins.
  • satellite: pickle files for comparing the lensing profiles of central-only and central+satellite samples.
  • index: index files used for cross-matching different samples.

• paper: LaTeX files of the manuscript.

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