{
  "id": "1410.8514",
  "version": "v1",
  "published": "2014-10-30T19:38:42.000Z",
  "updated": "2014-10-30T19:38:42.000Z",
  "title": "Origin of the Correlations Between Supermassive Black Holes and Their Host Galaxies",
  "authors": [
    "Sydney Sherman",
    "Mouyuan Sun",
    "Qirong Zhu",
    "Jonathan R. Trump",
    "Yuexing Li"
  ],
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "Observations have shown that supermassive black holes in nearby elliptical galaxies correlate tightly with the stellar velocity dispersion (the $\\MBH - \\sigma$ relation) and the stellar mass (the $\\MBH - \\Mhost$ relation) of their host spheroids. However, the origin of these correlations remains ambiguous. In a previous paper by Zhu et al., we proposed a model which links the M-$\\sigma$ relation to the the dynamical state of the system and the $\\MBH - \\Mhost$ relation to the self-regulation of galaxy growth. To test this model, we compile a sample of observed galaxies with different properties and examine the dependence of the above correlations on these parameters. We find that galaxies that satisfy the the $\\MBH - \\sigma$ correlation appear to have reached virial equilibrium, as indicated by the ratio between kinetic energy and gravitational potential, 2K/U $\\sim$ 1. Furthermore, the ratio of black hole accretion rate to star formation rate remains nearly constant, BHAR /SFR $\\sim$ $10^{-3}$, in active galaxies over a wide range of mass in the redshift range z=0 - 3. These results confirm our theoretical model that the observed correlations have different origins: the $\\MBH - \\sigma$ relation may result from galaxy relaxation, while the $\\MBH$ - $\\Mhost$ relation may be due to self-regulated black hole accretion and star formation in galaxies.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-10-30T19:38:42.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "supermassive black holes",
      "correlation",
      "host galaxies",
      "elliptical galaxies correlate",
      "star formation rate remains"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1325189,
      "adsabs": "2014arXiv1410.8514S"
    }
  }
}