{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PMDCWR4YME25SJEEPTXVGVWF7A","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"6e2ceda3407abe598a1ab78f8f017263a347311d8520d847fd9beb565299d2f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-25T14:30:01Z","title_canon_sha256":"81dc2bae5c4498ffdaf24ba66f35b54b0aabc16dd1e86513af6905d192fbfd17"},"schema_version":"1.0","source":{"id":"1304.6923","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.6923","created_at":"2026-05-18T01:50:21Z"},{"alias_kind":"arxiv_version","alias_value":"1304.6923v1","created_at":"2026-05-18T01:50:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.6923","created_at":"2026-05-18T01:50:21Z"},{"alias_kind":"pith_short_12","alias_value":"PMDCWR4YME25","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PMDCWR4YME25SJEE","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PMDCWR4Y","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:f2bb4da2ba868394032dbf0f1b7aa37c49e217fe9e030882db90f14fa3f68ea4","target":"graph","created_at":"2026-05-18T01:50:21Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We study the evolution, rotation, and surface abundances of O-type dwarfs in the Small Magellanic Cloud. We analyzed the UV and optical spectra of twenty-three objects and derived photospheric and wind properties. The observed binary fraction of the sample is ~ 26%, which is compatible with more systematic studies, if one considers that the actual binary fraction is potentially larger owing to low-luminosity companions and that the sample excluded obvious spectroscopic binaries. The location of the fastest rotators in the H-R diagram indicates that these could be several Myr old. The offset in","authors_text":"D. John Hillier, Eric Depagne, Fabrice Martins, Ivan Hubeny, Jean-Claude Bouret, Thierry Lanz, Wagner L. F. Marcolino","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-25T14:30:01Z","title":"Massive stars at low metallicity: Evolution and surface abundances of O dwarfs in the SMC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6923","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:67a76112604d3045d1be57a51a29460218ba074863a249d03ed49ea287354119","target":"record","created_at":"2026-05-18T01:50:21Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"6e2ceda3407abe598a1ab78f8f017263a347311d8520d847fd9beb565299d2f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-25T14:30:01Z","title_canon_sha256":"81dc2bae5c4498ffdaf24ba66f35b54b0aabc16dd1e86513af6905d192fbfd17"},"schema_version":"1.0","source":{"id":"1304.6923","kind":"arxiv","version":1}},"canonical_sha256":"7b062b47986135d924847cef5356c5f81fddc44cca3a80e91bdd5d2815af381c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b062b47986135d924847cef5356c5f81fddc44cca3a80e91bdd5d2815af381c","first_computed_at":"2026-05-18T01:50:21.890120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:21.890120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RR0/8bFpPqRYv2pb6XMaNvCdH2Irn6Goa0R02OxyOrR1+/7iD3iqWxlLlaDDlI2LhsMWK4WC1iI4F5Ltv+0SBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:21.890844Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.6923","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67a76112604d3045d1be57a51a29460218ba074863a249d03ed49ea287354119","sha256:f2bb4da2ba868394032dbf0f1b7aa37c49e217fe9e030882db90f14fa3f68ea4"],"state_sha256":"b79451757d7d0498dcb8a3013f5c9d740962c7751110a81f98c6a60c42079ae9"}