{
  "id": "1510.05752",
  "version": "v1",
  "published": "2015-10-20T04:42:36.000Z",
  "updated": "2015-10-20T04:42:36.000Z",
  "title": "Rotation Curve Decomposition for Size-Mass Relations of Bulge, Disk, and Dark Halo in Spiral Galaxies",
  "authors": [
    "Yoshiaki Sofue"
  ],
  "comment": "12 pages, 14 figures, PASJ in press",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "Rotation curves of more than one hundred spiral galaxies were compiled from the literature, and deconvolved into bulge, disk, and dark halo using $\\chi^2$ fitting in order to determine their scale radii and masses. Correlation analyses were obtained of the fitting parameters for galaxies that satisfied selection and accuracy criteria. Size-mass relations indicate that the sizes and masses are positively correlated among different components in such a way that the larger or more massive is the dark halo, the larger or more massive are the disk and bulge. Empirical size-mass relations were obtained for bulge, disk and dark halo by the least-squares fitting. The disk-to-halo mass ratio was found to be systematically greater by a factor of three than that predicted by cosmological simulations combined with photometry. A preliminary mass function for dark halo was obtained, which is represented by the Schechter function followed by a power law.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-10-20T04:42:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dark halo",
      "rotation curve decomposition",
      "spiral galaxies",
      "disk-to-halo mass ratio",
      "preliminary mass function"
    ],
    "publication": {
      "doi": "10.1093/pasj/psv103"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1399131
    }
  }
}