{
  "id": "1901.11001",
  "version": "v1",
  "published": "2019-01-30T18:52:20.000Z",
  "updated": "2019-01-30T18:52:20.000Z",
  "title": "Relations between abundance characteristics and rotation velocity for star-forming MaNGA galaxies",
  "authors": [
    "L. S. Pilyugin",
    "E. K. Grebel",
    "I. A. Zinchenko",
    "Y. A. Nefedyev",
    "J. M. Vilchez"
  ],
  "comment": "Accepted for publication in the Astronomy and Astrophysics",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We derive rotation curves, surface brightness profiles, and oxygen abundance distributions for 147 late-type galaxies using the publicly available spectroscopy obtained by the MaNGA survey. Changes of the central oxygen abundance (O/H)_0, the abundance at the optical radius (O/H)_R25, and the abundance gradient with rotation velocity V_rot are examined for galaxies with rotation velocities from 90 km/s to 350 km/s. We found that each relation shows a break at V_rot^* ~200 km/s. The central (O/H)_0 abundance increases with rising V_rot and the slope of the (O/H)_0 - V_rot relation is steeper for galaxies with V_rot < V_rot^*. The mean scatter of the central abundances around this relation is 0.053 dex. The relation between the abundance at the optical radius of a galaxy and its rotation velocity is similar; the mean scatter in abundances around this relation is 0.081 dex. The radial abundance gradient expressed in dex/kpc flattens with the increase of the rotation velocity. The slope of the relation is very low for galaxies with V_rot > V_rot^*. The abundance gradient expressed in dex/R25 is rougly constant for galaxies with V_rot < V_rot^*, flattens towards V_rot^*, and then again is roughly constant for galaxies with V_rot > V_rot^*. The change of the gradient expressed in terms of dex/h_d (where h_d is the disc scale length) with rotation velocity is similar to that for gradient in dex/R25. The relations between abundance characteristics and other basic parameters (stellar mass, luminosity, and radius) are also considered.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-01-30T18:52:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "rotation velocity",
      "star-forming manga galaxies",
      "abundance characteristics",
      "abundance gradient",
      "oxygen abundance distributions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}