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(2011), of four rapidly pulsating sdO stars in the globular cluster Omega Cen, with Teff near 50,000 K, 5.4 < log g < 6.0, and hydrogen-rich atmospheres. The only previously known sdO pulsator is significantly hotter at 68,500 K and log g = 6.1. All of the sdO pulsators identified so far are fainter than 17.4 in the V band and, thus, are poor candidates for an in-depth follow-up with asteroseismology. We therefore"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1308.1373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-06T18:42:56Z","cross_cats_sorted":[],"title_canon_sha256":"7cdc5f255c241a9abfba1ad352a75f00d0e01687444d34d296dd591c6d4b4ee5","abstract_canon_sha256":"b72f1a6ef259cf9f15279b5532e43e31a6712f95167a845671cb27825f005f97"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:16:39.071534Z","signature_b64":"Ampg7kcS2Lqisss0W6UUplgWe+UIj6U0++sP53qT9iKWjmC2g8qmuSLoSENT7Ma3siv0yZ47HNJO+6J+qa8ADQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e8e58e748cdd5e979a7a9bd2d93adac3f5c2c5d6b297ae42501b4e0e2edf57d3","last_reissued_at":"2026-05-18T03:16:39.071041Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:16:39.071041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Photometric Survey to Search for Field sdO Pulsators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Christopher B. Johnson, C. J. O'Malley, E. M. Green, G. Fontaine, H. Amaya, L. Biddle, S. Wallace","submitted_at":"2013-08-06T18:42:56Z","abstract_excerpt":"We present the results of a campaign to search for subdwarf O (sdO) star pulsators among bright field stars. The motivation for this project is the recent discovery by Randall et al. (2011), of four rapidly pulsating sdO stars in the globular cluster Omega Cen, with Teff near 50,000 K, 5.4 < log g < 6.0, and hydrogen-rich atmospheres. The only previously known sdO pulsator is significantly hotter at 68,500 K and log g = 6.1. All of the sdO pulsators identified so far are fainter than 17.4 in the V band and, thus, are poor candidates for an in-depth follow-up with asteroseismology. 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