{
  "id": "1902.03244",
  "version": "v1",
  "published": "2019-02-08T19:00:01.000Z",
  "updated": "2019-02-08T19:00:01.000Z",
  "title": "Multi-wavelength properties of Type 1 and Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey",
  "authors": [
    "Hyewon Suh",
    "Francesca Civano",
    "Guenther Hasinger",
    "Elisabeta Lusso",
    "Stefano Marchesi",
    "Andreas Schulze",
    "Masato Onodera",
    "David J. Rosario",
    "David B. Sanders"
  ],
  "comment": "30 pages, 18 figures, accepted for publication in ApJ",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We investigate the multi-wavelength properties of host galaxies of 3701 X-ray-selected active galactic nuclei (AGNs) out to z~5 in the Chandra-COSMOS Legacy Survey. Thanks to the extensive multi-wavelength photometry available in the COSMOS field, we derive AGN luminosities, host stellar masses, and star formation rates (SFRs) via a multi-component SED fitting technique. Type 1 and Type 2 AGNs follow the same intrinsic Lx-L6um relation, suggesting that mid-infrared emission is a reasonably good measure of the AGN accretion power regardless of obscuration. We find that there is a strong increase in Type 1 AGN fraction toward higher AGN luminosity, possibly due to the fact that Type 1 AGNs tend to be hosted by more massive galaxies. The AGN luminosity and SFR are consistent with an increase toward high stellar mass, while both the Mstellar-dependence is weaker towards the high-mass end, which could be interpreted as a consequence of quenching both star formation and AGN activity in massive galaxies. AGN host galaxies tend to have SFRs that are consistent with normal star-forming galaxies, independent of AGN luminosities. We confirm that black hole accretion rate and SFR are correlated up to z~5, when forming stars. The majority (~73%) of our AGN sample are faint in the far-infrared, implying that the moderate-luminosity AGNs seem to be still active after the star formation is suppressed. It is not certain whether AGN activity plays a role in quenching the star formation. We conclude that both AGN activity and star formation might be more fundamentally related to host stellar mass.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-02-08T19:00:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "agn host galaxies",
      "chandra-cosmos legacy survey",
      "multi-wavelength properties",
      "star formation",
      "agn luminosity"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 30,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}