{"paper":{"title":"Herschel/PACS observations of the 69 $\\mu m$ band of crystalline olivine around evolved stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B.L. de Vries, B. Vandenbussche, C. Waelkens, F. Kerschbaum, F. Molster, G. Van de Steene, H. Van Winckel, J.A.D.L. Blommaert, L.B.F.M. Waters, L. Decin, M.A.T. Groenewegen, M. Barlow, M. Min, P. Garc\\'ia-Lario, P. Royer, P. van Hoof, Th. Posch, T. Ueta","submitted_at":"2014-03-25T13:21:36Z","abstract_excerpt":"We present 48 Herschel/PACS spectra of evolved stars in the wavelength range of 67-72 $\\mu$m. This wavelength range covers the 69 $\\mu$m band of crystalline olivine ($\\text{Mg}_{2-2x}\\text{Fe}_{(2x)}\\text{SiO}_{4}$). The width and wavelength position of this band are sensitive to the temperature and composition of the crystalline olivine. Our sample covers a wide range of objects: from high mass-loss rate AGB stars (OH/IR stars, $\\dot M \\ge 10^{-5}$ M$_\\odot$/yr), through post-AGB stars with and without circumbinary disks, to planetary nebulae and even a few massive evolved stars. The goal of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.6335","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}