How to Use the Catalog

This page provides a brief description of how to interact with and obtain the data in the catalog. There is a hierarchy of three page types to work with: the “set page”, the “simulation page”, and the “epoch page”.

The Set Page

The “set page” describes the general characteristics of a set of simulations from a particular investigation and provides links to the individual simulations. This page provides links to original journal articles which the simulation data appeared in, as well as basic characteristics of the simulation data including the size of the domain, the finest cell size, the characteristic mass of the clusters, etc.

The set pages are all linked to from The Simulation Data.

The Simulation Page

Clicking on a particular simulation’s link from the set page will take you to a “simulation page” which shows various quantities projected along the z-axis for every epoch of the simulation that is available. The different epochs can be navigated using the slider bar. The buttons above the slider bar can be used to look at the same images from a different line of sight. You can click on a particular set of images to get you to the images and files for a particular epoch.

The Epoch Page

This page is where you can examine images from a particular simulation epoch in more detail and obtain data. From this page you can:

  1. Examine the images: Look at the images for the various slices and projections. Clicking on any image will enlarge it.
  2. Download FITS files: Download links are provided for all of the FITS files for this particular epoch.
  3. Choose a projection direction: For the projected fields, changing the projection axis on the drop-down menu will update the images for the projected fields as well as the links to the FITS files.
  4. Go to the yt Hub and start Jupyter notebooks: A link is provided near the bottom of the page which displays a link and instructions for starting Jupyter notebooks on the yt Hub, provided that one has signed up for an account on the yt Hub.
  5. Open FITS files in JS9: JS9 is a great tool for displaying astronomical images in web browsers. On each epoch page, various links are provided for opening a FITS file in the JS9 window at the bottom of the page. The drop-down menu above the JS9 window allows one to navigate between the different HDUs in the file.