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| Paper: |
Cosmological Simulations in a Relational Database: Modelling and Storing Merger Trees |
| Volume: |
351, Astronomical Data Analysis Software and Systems XV |
| Page: |
212 |
| Authors: |
Lemson, G.; Springel, V. |
| Abstract: |
We present a method for storing tree-like data structures in a relational database that allows for fast querying of children and parents of any node and from and down to any level. We have used this method in storing halo merger trees derived from a large cosmological N-body simulation and the merger trees of model galaxy catalogues derived from the halo catalogues using semi-analytical methods. We give SQL queries corresponding to typical science questions that can be asked from such a database and present an online query interface available through the web portal of the German Astrophysical Virtual Observatory. |
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