{
  "id": "astro-ph/9601181",
  "version": "v1",
  "published": "1996-01-30T18:28:19.000Z",
  "updated": "1996-01-30T18:28:19.000Z",
  "title": "The Lensing Galaxy in MG1549+3047",
  "authors": [
    "J. Lehar",
    "A. J. Cooke",
    "C. R. Lawrence",
    "A. D. Silber",
    "G. I. Langston"
  ],
  "comment": "11 pages, 6 PostScript figures, uses AAS LaTex style aaspp.sty, To appear in AJ (1996.05), Submitted 1995.09.22, Accepted 1996.01.17",
  "doi": "10.1086/117919",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We have measured a velocity dispersion for the foreground galaxy in this gravitationally lensed system. Our dispersion confirms the prediction from lens models, provided that the source is distant enough ($z_{_S}>0.2$). Current interpretations of lensing statistics depend sensitively on how the optical and mass dispersions are related. For $z_{_S}>0.5$, our observations favor $\\sigma_{mass}/\\sigma_{opt}\\simeq1$, but our uncertainties prevent us from clearly distinguishing between dynamical models. We could not obtain a unique mass profile from lensing constraints, but models with a constant mass-to-light ratio are possible. We also found unusual rotation in the lensing galaxy, and confirmed its redshift.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1996-01-30T18:28:19.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "lensing galaxy",
      "constant mass-to-light ratio",
      "lens models",
      "foreground galaxy",
      "current interpretations"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 435777
    }
  }
}