{
  "id": "2103.05011",
  "version": "v1",
  "published": "2021-03-08T19:00:04.000Z",
  "updated": "2021-03-08T19:00:04.000Z",
  "title": "Unveiling the nature of 11 dusty star-forming galaxies at the peak of cosmic star formation history",
  "authors": [
    "L Pantoni",
    "A Lapi",
    "M Massardi",
    "D Donevski",
    "A Bressan",
    "L Silva",
    "F Pozzi",
    "C Vignali",
    "M Talia",
    "A Cimatti",
    "T Ronconi",
    "L Danese"
  ],
  "comment": "23 pages, 6 figures, 13 tables. Accepted for publication in MNRAS",
  "doi": "10.1093/mnras/stab674",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present a panchromatic study of 11 (sub-)millimetre selected DSFGs with spectroscopically confirmed redshift ($1.5< z_{\\rm spec}<3$) in the GOODS-S field, with the aim of constraining their astrophysical properties (e.g., age, stellar mass, dust and gas content) and characterizing their role in the context of galaxy evolution. The multi-wavelength coverage of GOODS-S, from X-rays to radio band, allow us to model galaxy SED by using CIGALE with a novel approach, based on a physical motivated modelling of stellar light attenuation by dust. Median stellar mass ($\\simeq6.5\\times10^{10}$ M$_\\odot$) and SFR ($\\simeq241$ M$_\\odot$ yr$^{-1}$) are consistent with galaxy main-sequence at $z\\sim2$. The galaxies are experiencing an intense and dusty burst of star formation (median L$_{\\rm IR}\\simeq2\\times10^{12}$ L$_\\odot$), with a median age of $750$ Myr. The high median content of interstellar dust (M$_{\\rm dust}\\simeq5\\times10^8$ M$_\\odot$) suggests a rapid enrichment of the ISM (on timescales $\\sim10^8$ yr). We derived galaxy total and molecular gas content from CO spectroscopy and/or Rayleigh-Jeans dust continuum ($10^{10}\\lesssim$ M$_{\\rm gas}/$M$_\\odot\\lesssim10^{11}$), depleted over a typical timescale $\\tau_{\\rm depl}\\sim200$ Myr. X-ray and radio luminosities suggest that most of the galaxies hosts an accreting radio silent/quiet SMBH. This evidence, along with their compact multi-wavelength sizes (median r$_{\\rm ALMA}\\sim$ r$_{\\rm VLA}=1.8$ kpc, r$_{\\rm HST}=2.3$ kpc) measured from high-resolution imaging ($\\theta_{\\rm res}\\lesssim$ 1 arcsec), indicates these objects as the high-z star-forming counterparts of massive quiescent galaxies, as predicted e.g., by the in-situ scenario. Four objects show some signatures of a forthcoming/ongoing AGN feedback, that is thought to trigger the morphological transition from star-forming disks to ETGs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-03-08T19:00:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cosmic star formation history",
      "dusty star-forming galaxies",
      "stellar mass",
      "gas content",
      "stellar light attenuation"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}