{"paper":{"title":"Recurrent dust formation by WR 48a on a 30-year timescale","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Space Research Organization Netherlands, 3), (3) Astronomical Institute `Anton Pannekoek', (4) South African Astronomical Observatory, 5), (5) Astronomy, (6) Service d'Astrophysique DSM/IRFU/SAp CEA - Saclay, (7) Atacama Large Millimetre/submillimetre Array (ALMA), Astronomy Department, Cosmology, Diah Y. A. Setia Gunawan (7) ((1) Institute for Astronomy, Edinburgh, Francois van Wyk (4), Fred Marang (4), Gif-sur-Yvette France, Gravity Centre, Karel A. van der Hucht (2, Patrice Bouchet (6), Patricia A. Whitelock (4, Peredur M. Williams (1), Rondebosch, Royal Observatory, Santiago Chile), South Africa, The Netherlands, University of Amsterdam, University of Cape Town, University of Edinburgh, Utrecht","submitted_at":"2011-11-22T13:32:58Z","abstract_excerpt":"We present infrared photometry of the WC8 Wolf-Rayet system WR 48a observed with telescopes at ESO, the SAAO and the AAT between 1982 and 2011 which show a slow decline in dust emission from the previously reported outburst in 1978--79 until about 1997, when significant dust emission was still evident. This was followed by a slow rise, accelerating to reach and overtake the first (1978) photometry, demonstrating that the outburst observed in 1978--79 was not an isolated event, but that they recur at intervals of 32+ years. This suggests that WR 48a is a long-period dust maker and colliding-win"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.5194","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"}