{
  "id": "1805.06233",
  "version": "v1",
  "published": "2018-05-16T10:29:24.000Z",
  "updated": "2018-05-16T10:29:24.000Z",
  "title": "The environmental properties of radio-emitting AGN",
  "authors": [
    "M. Magliocchetti",
    "P. Popesso",
    "M. Brusa",
    "M. Salvato"
  ],
  "comment": "8 pages, 6 figures, to appear on MNRAS",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We study the environmental properties of z<1.2 radio-selected AGN belonging to the ~2 square degrees of the COSMOS field, finding that about 20% of them appear within overdense structures. AGN with $P[1.4 GHz]>10^{23.5} W Hz^{-1} sr^{-1}$ are twice more likely to be found in clusters with respect to fainter sources (~38% vs ~15%), just as radio-selected AGN with stellar masses $M*>10^{11} M_\\odot$ are twice more likely to be found in overdense environments with respect to objects of lower mass (~24% vs ~11%). Comparisons with galaxy samples further suggest that radio-selected AGN of large stellar mass tend to avoid underdense environments more than normal galaxies with the same stellar content. Stellar masses also seem to determine the location of radio-active AGN within clusters: ~100% of the sources found as satellite galaxies have $M*<10^{11.3} M_\\odot$, while ~100% of the AGN coinciding with a cluster central galaxy have $M*>10^{11} M_\\odot$. No different location within the cluster is instead observed for AGN of various radio luminosities. Radio AGN which also emit in the MIR show a marked preference to be found as isolated galaxies (~70%) at variance with those also active in the X-ray which all seem to reside within overdensities. What emerges from our work is a scenario whereby physical processes on sub-pc and kpc scales (e.g. emission respectively related to the AGN and to star formation) are strongly interconnected with the large-scale environment of the AGN itself.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-05-16T10:29:24.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "environmental properties",
      "radio-emitting agn",
      "radio-selected agn",
      "large stellar mass tend",
      "avoid underdense environments"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}