{
  "id": "1910.07544",
  "version": "v1",
  "published": "2019-10-16T18:00:08.000Z",
  "updated": "2019-10-16T18:00:08.000Z",
  "title": "Massive and old quiescent galaxies at high redshift",
  "authors": [
    "Giacomo Girelli",
    "Micol Bolzonella",
    "Andrea Cimatti"
  ],
  "comment": "Astronomy & Astrophysics, accepted; 21 pages, 13 figures",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "Massive quiescent galaxies at high redshift can shed light on the processes of galaxy mass assembly and quenching of the star formation at early epochs. We present observer-frame color-color diagrams designed to identify candidate quiescent galaxies from z=2.5 up to the highest redshifts, that can be then be selected for spectroscopic follow-up observations. The application to the COSMOS2015 catalog shows that, after refining the selection with SED fitting, the number of massive old quiescent galaxies exceeds the forecast of state-of-the-art semi-analytic models, pointing out the need of an improvement of the implemented quenching mechanisms at high redshifts.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-10-16T18:00:08.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high redshift",
      "massive old quiescent galaxies exceeds",
      "spectroscopic follow-up observations",
      "state-of-the-art semi-analytic models",
      "identify candidate quiescent galaxies"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 21,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}