{"paper":{"title":"A Circular Planetary Nebula around the OH/IR Star OH 354.88-0.54 (V1018 Sco)","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Macquarie University, 3), (4) Australia Telescope National Facility), Australia (3) Anglo-Australian Observatory, Jessica Chapman (4) ((1) UC. Berkeley, Martin Cohen (1), Quentin A Parker (2, Sydney","submitted_at":"2004-12-08T04:41:02Z","abstract_excerpt":"New deep, high-resolution H-alpha imagery from the UK Schmidt Telescope (UKST) Unit's H-alpha survey of the Southern Galactic Plane reveals the presence of a faint, highly circular, planetary nebula surrounding a very long period variable star (now known as V1018 Sco), first discovered as a 1612-MHz OH maser, OH 354.88-0.54. The nebular phase-lag distance, diameter, and radial velocity are 3.2kpc, 0.3pc, and 13km/s, respectively. Combining the maser attributes with near-, mid-, and far-infrared data and with our optical spectrum of the ring we conclude that the object was an intermediate mass "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412175","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"}