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We find that half of the rapidly rotating $>$0.3 $M_{\\odot}$ stars are confirmed or candidate binary systems. The remaining $>0.3$ $M_{\\odot}$ fast rotators have not been searched for companions, and are therefore not confirmed single stars. We found previously that nearly all rapidly rotating $>$0.3 $M_{\\odot}$ stars in the Hyades are binaries, but we require deeper binary searches in Praesep"},"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":"1704.04507","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-04-14T18:06:31Z","cross_cats_sorted":[],"title_canon_sha256":"34f4561d72b916f5b01443b497bd28662f912b5903bebe93646cb7a010d1f8e6","abstract_canon_sha256":"6a17642654694b02355d26f4fac70b9c62544adfd11e817ea24c0b5aa961e397"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:41:33.677551Z","signature_b64":"xyHuz+BIyKpk5TWXTOubxLI/Ff7tAVpLBa9LaJNjH73itIGOm5Vc0ZZee5wqyZlmloFmUnhFpqZA2Cpdb544DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"252b3f86ae26d9e41fa291765c51e921a7856726c6137f3594093e56afc108f8","last_reissued_at":"2026-05-18T00:41:33.676907Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:41:33.676907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Poking the Beehive From Space: K2 Rotation Periods For Praesepe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Adam L. 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