{"paper":{"title":"Binarity at LOw Metallicity (BLOeM): The multiplicity properties and evolution of BAF-type supergiants","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. A. C. Sander, A. de Koter, A. Gilkis, A. J. G. O'Grady, A. Menon, A. Schootemeijer, C. J. Evans, C. Wang, D. J. Lennon, D. M. Bowman, D. Pauli, F. Najarro, F. R. N. Schneider, F. Tramper, G. Gonz\\'alez-Tor\\`a, H. Sana, I. Mandel, J. Bodensteiner, J. I. Villase\\~nor, J. S. Vink, J. Th. van Loon, K. Deshmukh, K. Sen, L. Mahy, L. M. Oskinova, L. R. Patrick, M. Bernini-Peron, M. Moe, M. Renzo, M. Stoop, N. Britavskiy, N. Langer, P. A. Crowther, S. E. de Mink, S. Toonen, T. Shenar, V. M. Kalari, Y. G\\\"otberg, Z. \\~Keszthelyi","submitted_at":"2025-02-04T19:00:03Z","abstract_excerpt":"Given the uncertain evolutionary status of blue supergiant stars, their multiplicity properties hold vital clues to better understand their origin and evolution. As part of The Binarity at LOw Metallicity (BLOeM) campaign in the Small Magellanic Cloud we present a multi-epoch spectroscopic survey of 128 supergiant stars of spectral type B5--F5, which roughly correspond to initial masses in the range 6 to 30 solar masses. The observed binary fraction for the B5-9 supergiants is 25+/-6 % (10+/-4 %) and 5+/-2 % (0 %) for the A-F stars, using a radial velocity (RV) variability threshold of 5 kms ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.02644","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.02644/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}