{ "id": "1301.2867", "version": "v1", "published": "2013-01-14T06:51:08.000Z", "updated": "2013-01-14T06:51:08.000Z", "title": "Crystalline Silicates in Evolved Stars. I. Spitzer/IRS Spectroscopy of IRAS16456-3542, 18354-0638, and 23239+5754", "authors": [ "B. W. Jiang", "Ke Zhang", "Aigen Li", "C. M. Lisse" ], "comment": "21 pages, 6 figures, 4 tables, accepted by the Astrophyical Journal", "categories": [ "astro-ph.SR" ], "abstract": "We report the Spitzer Infrared Spectrograph (IRS) observations of three evolved stars: IRAS 16456-3542, 18354-0638, and 23239+5754. The 9.9--37.2um Spitzer/IRS high resolution spectra of these three sources exhibit rich sets of enstatite-dominated crystalline silicate emission features. IRAS 16456-3542 is extremely rich in crystalline silicates, with >90% of its silicate mass in crystalline form, the highest to date ever reported for crystalline silicate sources.", "revisions": [ { "version": "v1", "updated": "2013-01-14T06:51:08.000Z" } ], "analyses": { "keywords": [ "evolved stars", "spitzer/irs spectroscopy", "2um spitzer/irs high resolution spectra", "enstatite-dominated crystalline silicate emission features", "crystalline silicate sources" ], "tags": [ "journal article" ], "publication": { "doi": "10.1088/0004-637X/765/1/72", "journal": "The Astrophysical Journal", "year": 2013, "month": "Mar", "volume": 765, "number": 1, "pages": 72 }, "note": { "typesetting": "TeX", "pages": 21, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1210581, "adsabs": "2013ApJ...765...72J" } } }