{"paper":{"title":"A 500 pc volume-limited sample of hot subluminous stars I. Space density, scale height, and population properties","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. A. Djupvik, A. A. Soemitro, A. G. Istrate, C. S. Jeffery, D. Schneider, E. M. Green, H. Dawson, I. Pelisoli, J. H. Telting, J. Munday, J. Vos, L. Antunes Amaral, M. Dorsch, M. M. Roth, M. Pritzkuleit, M. Uzundag, M. Vu\\v{c}kovi\\'c, N. Reindl, R. Culpan, R. H. {\\O}stensen, R. Raddi, S. Geier, S. Justham, S. O. Kepler, T. Kupfer, T. Steinmetz, U. Heber, V. Schaffenroth","submitted_at":"2024-03-22T07:35:57Z","abstract_excerpt":"We present the first volume-limited sample of spectroscopically confirmed hot subluminous stars out to 500 pc, defined using the accurate parallax measurements from the {\\em Gaia} space mission data release 3 (DR3). The sample comprises a total of 397 members, with 305 ($\\sim 77\\%$) identified as hot subdwarf stars, including 83 newly discovered systems. Of these, we observe that 178 ($\\sim58\\%$) are hydrogen-rich sdBs, 65 are sdOBs ($\\sim 21\\%$), 32 are sdOs ($\\sim 11\\%$), and 30 are He-sdO/Bs ($\\sim 10\\%$). Among them, 48 ($\\sim 16\\%$) exhibit an infrared excess in their spectral energy dist"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.15513","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/2403.15513/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"}