CSiBORG tools

CSiBORG Matching

TODO

• Implement CIC binning or an alternative scheme for nearby objects.
• Consistently locate region spanned by a single halo.
• Write a script to perform the matching on a node.
• Make a coarser grid for halos outside of the well resolved region.

Questions

• What scaling of the search region? No reason for it to be a multiple of R_{200c}.
• How well can observed clusters be matched to CSiBORG? Do their masses agree?
• Is the number of clusters in CSiBORG consistent?

CSiBORG Galaxy Environmental Dependence

TODO

• Add gradient and Hessian of the overdensity field.
• Write a script to smoothen an overdensity field, calculate the derived fields and evaluate them at the galaxy positions.

Questions

• Environmental dependence of:

  • M_*, colour and SFR.
  • Galaxy alignment.
  • HI content.

• Fields to calculate:

  1. Overdensity field \delta
  2. Gradient and Hessian of \delta
  3. Gravitational field \Phi
  4. Gradient and Hessian of \Phi