 RASSCALS Galaxy Groups Catalog by NASA HEASARC (source code)

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= RASSCALS Galaxy Groups Catalog by NASA HEASARC
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https://heasarc.gsfc.nasa.gov/W3Browse/rosat/rasscals.html

Official catalogue description: optically selected galaxy groups and ROSAT extended X-ray measurements. Parameters include X-ray luminosity and group-scale observational quantities.

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