{
  "id": "1610.08503",
  "version": "v1",
  "published": "2016-10-26T20:00:00.000Z",
  "updated": "2016-10-26T20:00:00.000Z",
  "title": "Characterizing Intra-cluster light at $z\\sim0.5$ in the Hubble Frontier Fields",
  "authors": [
    "Takahiro Morishita",
    "Louis E. Abramson",
    "Tommaso Treu",
    "Kasper B. Schmidt",
    "Benedetta Vulcani",
    "Xin Wang"
  ],
  "comment": "Submitted to The Astrophysical Journal Letters",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We investigate the intra-cluster light (ICL) in 4 Hubble Frontier Fields clusters at $0.3<z<0.6$. Our new method makes use of the unprecedented depth of Hubble Space Telescope imaging data to probe very diffuse light ($\\mu_{F160W}\\sim29.5$ mag arcsec$^{-2}$) out to clustro-centric radii $R_{\\rm cl}\\sim300$ kpc. The rest-frame $B-V$ color of the ICL is consistent with that of passive cluster galaxies of $\\logm<9.5$, $\\sim0.3$ mag bluer than more massive ones ($\\logm>10.5$) and the cores of the brightest cluster galaxies, implying that the ICL and more-massive cluster galaxies are built-up via distinct processes. The stellar mass of the ICL ranges from $11.1< \\logmicl <11.9$, implying an ICL stellar mass fraction of $\\sim10$-$20\\%$, about half of the local value. Hence, we posit that the amount of ICL has rapidly increased since $z\\sim1$, and is still being constructed, at a rate of $\\sim200\\, \\Msun\\, {\\rm yr^{-1}}$ at $z\\sim0.5$ by cluster specific mechanisms such as galaxy interactions and the stripping of low-mass galaxies.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-10-26T20:00:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "hubble frontier fields",
      "characterizing intra-cluster light",
      "space telescope imaging data",
      "cluster galaxies",
      "icl stellar mass fraction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}