{
  "id": "1812.01529",
  "version": "v1",
  "published": "2018-12-04T17:02:40.000Z",
  "updated": "2018-12-04T17:02:40.000Z",
  "title": "The FMOS-COSMOS survey of star-forming galaxies at $z\\sim1.6$ VI: Redshift and emission-line catalog and basic properties of star-forming galaxies",
  "authors": [
    "Daichi Kashino",
    "John D. Silverman",
    "David Sanders",
    "Jeyhan Kartaltepe",
    "Emanuele Daddi",
    "Alvio Renzini",
    "Giulia Rodighiero",
    "Annagrazia Puglisi",
    "Francesco Valentino",
    "Stéphanie Juneau",
    "Olivier Ilbert",
    "Olivier Le Fèvre",
    "Anton. M. Koekemoer"
  ],
  "comment": "44 pages, submitted to ApJS. The emission-line catalog is now publicly available",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We present a new data release from the Fiber Multi-Object Spectrograph (FMOS)-COSMOS survey, which contains the measurements of spectroscopic redshift and flux of rest-frame optical emission lines (H$\\alpha$, [NII], [SII], H$\\beta$, [OIII]) for 1931 galaxies out of a total of 5484 objects observed over the 1.7~deg$^2$ COSMOS field. We obtained $H$-band and $J$-band medium-resolution ($R\\sim3000$) spectra with FMOS mounted on the Subaru telescope, which offers an in-fiber line flux sensitivity limit of $\\sim 1 \\times 10^{-17}~\\mathrm{erg~s^{-1}~cm^{-2}}$ for an on-source exposure time of five hours. The full sample contains the main population of star-forming galaxies at $z\\sim1.6$ over the stellar mass range $10^{9.5}\\lesssim M_\\ast/M_\\odot \\lesssim 10^{11.5}$, as well as other subsamples of infrared-luminous galaxies detected by Spitzer and Herschel at the same and lower ($z\\sim0.9$) redshifts and X-ray emitting galaxies detected by Chandra. This paper presents an overview of our spectral analyses, a description of the sample characteristics, and a summary of the basic properties of emission-line galaxies. We use the larger sample to re-define the stellar mass--star formation rate relation based on the dust-corrected H$\\alpha$ luminosity, and find that the individual galaxies are better fit with a parametrization including a bending feature at $M_\\ast\\approx10^{10.2}~M_\\odot$, and that the intrinsic scatter increases with $M_\\ast$ from 0.19 to $0.37$~dex. We also confirm with higher confidence that the massive ($M_\\ast\\gtrsim10^{10.5}~M_\\odot$) galaxies are chemically mature as much as local galaxies with the same stellar masses, and that the massive galaxies have lower [SII]/H$\\alpha$ ratios for their [OIII]/H$\\beta$, as compared to local galaxies, which is indicative of enhancement in ionization parameter.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-12-04T17:02:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "star-forming galaxies",
      "basic properties",
      "emission-line catalog",
      "fmos-cosmos survey",
      "stellar mass-star formation rate relation"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 44,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}