{
  "id": "1406.0699",
  "version": "v1",
  "published": "2014-06-03T13:11:13.000Z",
  "updated": "2014-06-03T13:11:13.000Z",
  "title": "Determination of Galactic Rotation Parameters and the Solar Galactocentric Distance Ro from 73 Masers",
  "authors": [
    "V. V. Bobylev",
    "A. T. Bajkova"
  ],
  "comment": "12 pages, 2 figures",
  "journal": "Astronomy Letters, 2014, Vol. 40, No. 7, pp. 389-397",
  "doi": "10.1134/S1063773714070020",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We have determined the Galactic rotation parameters and the solar Galactocentric distance R_0 by simultaneously solving Bottlinger's kinematic equations using data on masers with known line-of-sight velocities and highly accurate trigonometric parallaxes and proper motions measured by VLBI. Our sample includes 73 masers spanning the range of Galactocentric distances from 3 to 14 kpc. The solutions found are Omega_0 = 28.86 +/- 0.45 km/s/kpc, Omega'_0 = -3.96 +/- 0.09 km/s/kpc^2, Omega\"_0 =0.790 +/- 0.027 km/s/kpc^3, and R_0=8.3 +/- 0.2 kpc.In this case, the linear rotation velocity at the solar distance Ro is V_0=241 +/- 7 km/s. Note that we have obtained the Ro estimate, which is of greatest interest, from masers for the first time; it is in good agreement with the most recent estimates and even surpasses them in accuracy.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-06-03T13:11:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "solar galactocentric distance ro",
      "galactic rotation parameters",
      "determination",
      "simultaneously solving bottlingers kinematic equations",
      "highly accurate trigonometric parallaxes"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Astronomy Letters",
      "year": 2014,
      "month": "Jul",
      "volume": 40,
      "number": 7,
      "pages": 389
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014AstL...40..389B"
    }
  }
}