{
  "id": "astro-ph/9304018",
  "version": "v1",
  "published": "1993-04-20T13:24:00.000Z",
  "updated": "1993-04-20T13:24:00.000Z",
  "title": "The Fundamental Plane of Galaxy Clusters",
  "authors": [
    "R. Schaeffer",
    "S. Maurogordato",
    "A. Cappi",
    "F. Bernardeau"
  ],
  "comment": "11pp., 4 figures (available on request), LaTeX, BAP-04-1993-015-OAB",
  "journal": "Mon.Not.Roy.Astron.Soc.263:L21-L26,1993",
  "categories": [
    "astro-ph"
  ],
  "abstract": "Velocity dispersion $\\sigma$, radius $R$ and luminosity $L$ of elliptical galaxies are known to be related, leaving only two degrees of freedom and defining the so-called ``fundamental plane\". In this {\\em Letter} we present observational evidence that rich galaxy clusters exhibit a similar behaviour. Assuming a relation $L \\propto R^{\\alpha}\\sigma^{2 \\beta}$, the best-fit values of $\\alpha$ and $\\beta$ are very close to those defined by galaxies. The dispersion of this relation is lower than 10 percent, i.e. significantly smaller than the dispersion observed in the $L-\\sigma$ and $L-R$ relations. We briefly suggest some possible implications on the spread of formation times of objects and on peculiar velocities of galaxy clusters.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1993-04-20T13:24:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fundamental plane",
      "rich galaxy clusters",
      "peculiar velocities",
      "observational evidence",
      "velocity dispersion"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/263.1.21L"
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 353950
    }
  }
}