{
  "id": "1405.7758",
  "version": "v2",
  "published": "2014-05-30T01:25:06.000Z",
  "updated": "2014-10-15T04:48:47.000Z",
  "title": "The Brightest Cluster Galaxy in Abell 85: The Largest Core Known so far",
  "authors": [
    "O. Lopez-Cruz",
    "C. Anorve",
    "M. Birkinshaw",
    "D. M. Worrall",
    "H. J. Ibarra-Medel",
    "J. P. Torres-Papaqui",
    "W. A. Barkhouse",
    "V. Motta"
  ],
  "comment": "14 pages, 3 figure, 2 tables, accepted for publication in ApJ Letters on October 6th, 2014, replacement of previous manuscript submitted on May 30th, 2014 to astro-ph",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We have found that the brightest cluster galaxy (BCG) in Abell~85, Holm 15A, displays the largest core so far known. Its cusp radius, $r_{\\gamma} = 4.57 \\pm 0.06$ kpc ($4.26^{\\prime\\prime}\\pm 0.06^{\\prime\\prime}$), is more than 18 times larger than the mean for BCGs, and $\\geq1$ kpc larger than A2261-BCG, hitherto the largest-cored BCG (Postman, Lauer, Donahue, et al. 2012) Holm 15A hosts the luminous amorphous radio source 0039-095B and has the optical signature of a LINER. Scaling laws indicate that this core could host a supermassive black hole (SMBH) of mass $M_{\\bullet}\\thicksim (10^{9}-10^{11})\\,M_{\\odot}$. We suggest that cores this large represent a relatively short phase in the evolution of BCGs, whereas the masses of their associated SBMH might be set by initial conditions.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-05-30T01:25:06.000Z",
      "abstract": "We have found that the brightest cluster galaxy in Abell~85, Holm 15A, is the largest core so far known. Its cusp radius r = 4.57 +/- 0.06 kpc (4.26 +\\- 0.06 arcsec) is more than 18 times larger than the mean for BCGs, and >1 kpc larger than A2261-BCG, the former largest core BCG (Postman et al. 2012). Holm~15A hosts the luminous amorphous radio source 0039-095B and has the optical signature of a LINER. Scaling laws suggest that this core hosts a supermassive black hole (SMBH) of mass MBH~(10^9-10^11) solar masses. We suggest that a common mechanism is responsible for the formation of cores over a wide range of scales.",
      "comment": "14 pages, 3 figure, 2 tables, submitted to Astrophysical Journal Letters",
      "journal": null,
      "doi": null
    },
    {
      "version": "v2",
      "updated": "2014-10-15T04:48:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "brightest cluster galaxy",
      "largest core",
      "holm 15a hosts",
      "initial conditions",
      "cusp radius"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/2041-8205/795/2/L31",
      "journal": "The Astrophysical Journal",
      "year": 2014,
      "month": "Nov",
      "volume": 795,
      "number": 2
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1298873,
      "adsabs": "2014ApJ...795L..31L"
    }
  }
}