Galformod Project Portal

Web Services for Galaxy Formation Model

Max Planck Institute for Astrophysics

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Over the next decade, much of the effort on major astronomical facilities will be dedicated to large scale surveys on the galaxy population. Their aim is two-fold: understanding the origin and evolution of galaxies and their central supermassive black holes, and clarifying the nature of dark matter, dark energy and the process that produced all cosmic structure.
The goal of the Galformod Project is to develop and provide powerful and flexible modeling tools that can simulate the evolution of the galaxy population in all viable cosmologies and under a wide variety of assumptions about the governing physical processes.
This shall be achieved by a major expansion of the functionality and scope of the Millennium Simulation Archive.
The Millennium-Run Observatory allows to browse and deep zoom mock images that are the most extreme end product of the Millennium simulation post-processing pipeline. The images are derived from lightcones built from semi-analytic galaxy catalogs and virtual telescope images after processing theoretical galaxies through the specs of modern surveys. The interactive browser allows the user to obtain information about galaxies in the image from the database containing the catalogues and light cones.
Completed in 2005, the Millennium Simulation had a dramatic impact on the fields of cosmology structure formation and galaxy evolution. The Millennium Run used more than 10 billion particles to trace the evolution of the matter distribution in a cubic region of the Universe over 2 billion light-years on a side. It kept busy the principal supercomputer at the Max Planck Society's Supercomputing Centre in Garching, Germany for more than a month.
In recent years the volume and dynamic range of the simulated evolution of dark matter substructures has been dramatically increased with the arrival of the MillenniumII and MillenniumXXL simulations. The former increased the Millennium mass resolution 125 times, following the dark matter halos that host the smallest galaxies observed in the local universe (107 solar masses); the later boosted the simulated volume to a cubic box with 3Gpc on a side, covering the full observable sky out to z=1. Predictions for WMAP1 and WMAP7 cosmologies (either by direct simulations or scaling methods) are now available.
By applying sophisticated modelling techniques to the 25 Tbytes of stored output, Virgo scientists have been able to recreate evolutionary histories both for the millions of galaxies which populate this enormous volume and for the supermassive black holes which occasionally power quasars at their hearts. By comparing such simulated data to large observational surveys, one can clarify the physical processes underlying the buildup of real galaxies and black holes. The combined resources offer an unprecedented tool to understand the physics underlying the formation and evolution of dark matter structures and galaxies. All catalogs are available for download.
The TAP Service (Table Access Protocol) allows batch queries to the Millennium simulation data, similar to the MyMillennium query interfaces. The closer control over the execution of the SQL queries in the batch queue has the advantage that we can allow much longer time-out limits on the queries.
The data returned can be downloaded when a query job has finished or displayed directly in the TOPCAT table visualization tool.
The interactive MillenniumXXL browser gives access to the halo catalogues from the XXL simulation via a point-and-click browsing interface.
Our Computing ("Job Runner") Portals allow users to conveniently run more general science applications via the web. Currently the focus is on semi-analytic codes like MPA's L-Galaxies, which can be run through a simple input form that allows one to choose/enter various input parameters and allowing certain physics to be changed for each run. The jobs will be run on a batch queue and the resulting galaxy catalogs can be easily downloaded. More tools will be added over time.
The Applications Dashboard provides a single point of access to (almost) all Galformod Web Services.
It allows users to run the services from a single interface, to track progress of jobs and view and access the results. It allows users to browse and manage the list of all previous jobs and where applicable provide further services for visualising or analysing the results further.
The user interface of this application is somewhat more complex than your standard, single application interface. This page provides detailed descriptions of the various components and their functions.
this feature is not yet implemented. sorry for the inconvenience.