{
  "id": "1507.07939",
  "version": "v1",
  "published": "2015-07-28T20:01:54.000Z",
  "updated": "2015-07-28T20:01:54.000Z",
  "title": "SHARDS: A global view of the star formation activity at z~0.84 and z~1.23",
  "authors": [
    "Antonio Cava",
    "Pablo G. Perez-Gonzalez",
    "M. Carmen Eliche-Moral",
    "Elena Ricciardelli",
    "Alba Vidal-Garcia",
    "Belen Alcalde-Pampliega",
    "Almudena Alonso-Herrero",
    "Guillermo Barro",
    "Nicolas Cardiel",
    "A. Javier Cenarro",
    "Stephane Charlot",
    "Emanuele Daddi",
    "Miroslava Dessauges-Zavatsky",
    "Helena Dominguez Sanchez",
    "Nestor Espino-Briones",
    "Pilar Esquej",
    "Jesus Gallego",
    "Antonio Hernan-Caballero",
    "Marc Huertas-Company",
    "Casiana Munoz-Tunon",
    "Jose M. Rodriguez-Espinosa",
    "Lucia Rodriguez-Munoz",
    "Daniel Schaerer",
    "Laurence Tresse",
    "Victor Villar"
  ],
  "comment": "Submitted to ApJ, 23 pages, 17 figures, 1 table",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "In this paper, we present a comprehensive analysis of star-forming galaxies (SFGs) at intermediate redshifts (z~1). We combine the ultra-deep optical spectro-photometric data from the SHARDS survey with deep UV-to-FIR observations in the GOODS-N field to build and characterize a complete sample of SFGs at z~0.84 and z~1.23. Exploiting two of the 25 SHARDS medium-band filters, F687W17 and F823W17, we select [OII] emission line galaxies (ELGs) at z~0.84 and z~1.23 and characterize their physical properties. Their rest-frame equivalent widths (EWrf([OII])), line fluxes, luminosities, star formation rates (SFRs) and dust attenuation properties are investigated. The evolution of the EWrf([OII]) closely follows the SFR density evolution of the Universe, with a EWrf([OII])$\\propto$(1+z)$^3$ trend up to redshift z~1, followed by a possible flattening. The SF properties of the galaxies selected on the basis of their [OII] emission are compared with complementary samples of SFGs selected by their MIR and FIR emission, and also with a general mass-selected sample of galaxies at the same redshifts. We observationally demonstrate that the UVJ diagram (or, similarly, a cut in the specific SFR) is only partially able to distinguish the quiescent galaxies from the SFGs. The SFR-M$_*$ relation is investigated for the different samples, finding a logarithmic slope ~1, in good agreement with previous results. The dust attenuations derived from different SFR indicators (UV(1600), UV(2800), [OII], IR) are compared, finding clear trends with respect to both the stellar mass and total SFR, with more massive and highly star-forming galaxies being affected by stronger dust attenuation. The full SHARDS dataset allows the extension of this study to other redshifts and emission lines, thus providing a powerful tool for the study of ELGs up to high redshifts. (Abridged)",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-07-28T20:01:54.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "star formation activity",
      "global view",
      "emission line",
      "dust attenuation properties",
      "ultra-deep optical spectro-photometric data"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}