{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:QOA76FSIR4XHVLYT4YNFIAFOID","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":"cd7d92f87e5bd70f4988698ed18613f4ce8d93b9135d55f66b1db3fd8f7f74fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-16T20:00:01Z","title_canon_sha256":"71b556241302985a4b565a420458a753308628ee3681d34cfb312db55995d4a4"},"schema_version":"1.0","source":{"id":"1304.4591","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4591","created_at":"2026-05-18T03:27:44Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4591v1","created_at":"2026-05-18T03:27:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4591","created_at":"2026-05-18T03:27:44Z"},{"alias_kind":"pith_short_12","alias_value":"QOA76FSIR4XH","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QOA76FSIR4XHVLYT","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QOA76FSI","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:1eb97a9dacaef0ba024c4b495463a4ea8dfe24cd0a3be34e8b2447dfef5b2f95","target":"graph","created_at":"2026-05-18T03:27:44Z","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":"R144 is a WN6h star in the 30 Doradus region. It is suspected to be a binary because of its high luminosity and its strong X-ray flux, but no periodicity could be established so far. Here, we present new Xshooter multi-epoch spectroscopy of R144 obtained at the ESO Very Large Telescope (VLT). We detect variability in position and/or shape of all the spectral lines. We measure radial velocity variations with an amplitude larger than 250 km/s in NIV and NV lines. Furthermore, the NIII and NV line Doppler shifts are anti-correlated and the NIV lines show a double-peaked profile on six of our seve","authors_text":"A. de Koter, A.F.J. Moffat, D.R. Gies, F.R.N. Schneider, F. Tramper, H. Sana, L.E. Ellerbroek, L. Kaper, O. Schnurr, T. van Boeckel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-16T20:00:01Z","title":"R144 revealed as a double-lined spectroscopic binary"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4591","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:af323c72bf55bced02c17cc4df01796742474278a536090e0da26a3860d8fcf9","target":"record","created_at":"2026-05-18T03:27:44Z","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":"cd7d92f87e5bd70f4988698ed18613f4ce8d93b9135d55f66b1db3fd8f7f74fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-16T20:00:01Z","title_canon_sha256":"71b556241302985a4b565a420458a753308628ee3681d34cfb312db55995d4a4"},"schema_version":"1.0","source":{"id":"1304.4591","kind":"arxiv","version":1}},"canonical_sha256":"8381ff16488f2e7aaf13e61a5400ae40f0019326b8b278c84da26603426e1616","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8381ff16488f2e7aaf13e61a5400ae40f0019326b8b278c84da26603426e1616","first_computed_at":"2026-05-18T03:27:44.242667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:44.242667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LTKKgJe57MgW46PewDdaiQ4RXvcpB+YuBcMox/gjlwUubIM5HKSqpjRXWBr38e0V0yuQhjo5hdi+7I7RyaeXBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:44.243355Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.4591","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af323c72bf55bced02c17cc4df01796742474278a536090e0da26a3860d8fcf9","sha256:1eb97a9dacaef0ba024c4b495463a4ea8dfe24cd0a3be34e8b2447dfef5b2f95"],"state_sha256":"225258a4129160d712e096ef7c49b83334e299855a871c4f608359fd3ea9721d"}