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Tutorials
Andrew Benson edited this page Jun 17, 2025
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Below you'll find links to a collection of tutorials which show you how to perform simple calculations with Galacticus. The parameter files needed for each tutorial can be found in the parameters/tutorials/
folder of the Galacticus source distribution.
Note that the later tutorials build on the ideas presented in the earlier ones, so it's recommended to work through them in order.
- Computing the halo mass function
- Computing dark matter only merger trees
- Computing the warm dark matter halo mass function
- Solving the excursion set problem
- Computing power spectra
- Computing the warm dark matter power spectra
- Reionization calculations
- Constraining Galacticus parameters
- Extracting star formation histories
These are typically Jupyter notebook-based interactive examples of how to work with Galacticus data:
- Basics of Galacticus and galaxy formation (aimed at advanced high school students / beginning undergrads; created by Charles Gannon)
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Tutorials
- Introduction to Galacticus parameter files
- Dark matter halo mass function
- Warm dark matter halo mass function
- Power spectra
- Warm dark matter power spectra
- Dark matter only merger trees
- Subsampling of merger tree branches
- Dark matter only subhalo evolution
- Solving the excursion set problem
- Reionization calculations
- Instantaneous & Non-instantaneous recycling
- Computing Broadband Stellar Luminosities
- Postprocessing of stellar spectra
- Using N-body Merger Trees
- Generating Mock Catalogs with Lightcones
- Constraining Galacticus parameters
- Generating galaxy merger trees
- Extracting star formation histories
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How Galacticus works
- Structure Formation Flowchart
- Merger Tree Building Flowchart
- How Galacticus Evolves Halos and Galaxies
- Galaxy Physics Flowchart
- CGM Cooling Physics Flowchart
- Star Formation Physics Flowchart
- Outflow Physics Flowchart
- Galactic Structure Flowchart
- CGM Physics Flowchart
- SMBH Physics Flowchart
- Subhalo Evolution Flowchart
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Benchmarks and validation