{
  "id": "1001.3687",
  "version": "v1",
  "published": "2010-01-20T22:31:08.000Z",
  "updated": "2010-01-20T22:31:08.000Z",
  "title": "Interstellar Ti II in the Milky Way and Magellanic Clouds",
  "authors": [
    "Daniel E. Welty",
    "Paul A. Crowther"
  ],
  "comment": "56 pages, 26 figures, accepted to MNRAS",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We discuss several sets of Ti II absorption-line data, which probe a variety of interstellar environments in our Galaxy and in the Magellanic Clouds. Comparisons of high-resolution (FWHM ~ 1.3-1.5 km/s) Ti II spectra of Galactic targets with corresponding high-resolution spectra of Na I, K I, and Ca II reveal both similarities and differences in the detailed structure of the absorption-line profiles -- reflecting component-to-component differences in the ionization and depletion behaviour of those species. Moderate-resolution (FWHM ~ 3.4-4.5 km/s) spectra of more heavily reddened Galactic stars provide more extensive information on the titanium depletion in colder, denser clouds -- where more than 99.9 per cent of the Ti may be in the dust phase. Moderate-resolution (FWHM ~ 4.5-8.7 km/s) spectra of stars in the Magellanic Clouds suggest that the titanium depletion is generally much less severe in the LMC and SMC than in our Galaxy [for a given N(H_tot), E(B-V), or molecular fraction f(H_2)] -- providing additional evidence for differences in depletion patterns in those two lower-metallicity galaxies. We briefly discuss possible implications of these results for the interpretation of gas-phase abundances in QSO absorption-line systems and of variations in the D/H ratio in the local Galactic ISM.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-01-20T22:31:08.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magellanic clouds",
      "interstellar ti",
      "milky way",
      "titanium depletion",
      "local galactic ism"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1111/j.1365-2966.2010.16386.x",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2010,
      "month": "May",
      "volume": 404,
      "number": 3,
      "pages": 1321
    },
    "note": {
      "typesetting": "TeX",
      "pages": 56,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 843163,
      "adsabs": "2010MNRAS.404.1321W"
    }
  }
}