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Galacticus
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The code associated with our recent paper on enhancing the resolution of cosmological N-body simulations is now available in the Galacticus repo. This blog post explains how it works and how to use it.
We've just submitted a paper to the arXiv which describes a technique for enhancing the resolution of merger trees extracted from N-body simulations. The goal of this technique is to ensure that semi-analytic models applied t...
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I've created a new repo at BitBucket that will hold tools useful for working with Galacticus. The first one added is a tool written by Christoph Behrens to convert RockStar/ConsistentTrees format merger trees into a simple CSV format that can then be parsed by Galacticus' own conversion tools. (If only everyone would adopt a sensible merger tree format right........?)
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Galacticus
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It took longer than usual, but v0.9.3 of Galacticus is now released! The linked article describes the significant new features and improvements.
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Galacticus
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Thanks to a contribution from Stephanie Dörschner, Galacticus can now convert trees from the Bolshoi simulation database into Galacticus format - see the latest patch to v0.9.3.
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Galacticus
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Just pushed out a new feature which computes emission line luminosities for galaxies in Galacticus.
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The BPASS stellar population synthesis models (which include binary stars) are now available for use in Galacticus.
I'm making available a script which will convert the stellar population spectra from the BPASS project into Galacticus HDF5 format, so that they can be used in Galacticus calculations. Just drop the script into your Galacticu...
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The v0.9.4 installation script now supports a "binary" option which installs a statically-linked binary copy of Galacticus and avoids the need to install the various libraries and tools required to compile Galacticus. It's the fastest way to get Galacticus up and running.
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Galacticus
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As part of the Galacticus v0.9.4 development, we've introduced a major change in the structure of Galacticus parameter files. Read more on the blog.
As part of the Galacticus v0.9.4 development, we've introduced a major change in the structure of Galacticus parameter files. This change provides three improvements: Allows for more compact XML; Makes associations between g...
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Galacticus
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As promised, the final major addition to v0.9.3 prior to its release: detailed tracking of subhalo orbits. v0.9.3 itself should be finalized and released early in January.
The final major new addition to v0.9.3 of Galacticus has just been added. This is the subhalo evolution code written by Anthony Pullen which was used in our recent work on the subhalo population in warm dark matter halos. The...
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Galacticus
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Penultimate major new feature before the v0.9.3 release: fully self-consistent modelling of reionization and the evolution of the intergalactic medium.
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Galacticus
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Making it easier to move models between versions of Galacticus.
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I've just posted a paper to arXiv, which is the first in a series that attempts to carefully explore constraints on Galacticus from observations of the galaxy population.
I've just posted this paper to arXiv (full resolution version here, but be warned, it' about 180Mb), which is the first in a series that attempts to carefully explore constraints on Galacticus from observations of the galaxy ...
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galaxies astrophysics astronomy physics computation open-source semi-analytic
Introduction
Galacticus is a semi-analytic model of galaxy formation. This page is intended to be a discussion forum for anyone using Galacticus to share ideas, ask questions and offer answers!