{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:I6ARXUKAWJK7KXHTW2I7NIDWDX","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":"d3cc9508bea128475e801305c259a75dea42d8da8fb5326debdb7fa9b80edfb4","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-24T20:03:46Z","title_canon_sha256":"6b0098a3ce9dffe2fd01b815c72b8ceb271b0db1804a6b228329d95c9a8f0491"},"schema_version":"1.0","source":{"id":"1508.05939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.05939","created_at":"2026-05-18T01:30:55Z"},{"alias_kind":"arxiv_version","alias_value":"1508.05939v1","created_at":"2026-05-18T01:30:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.05939","created_at":"2026-05-18T01:30:55Z"},{"alias_kind":"pith_short_12","alias_value":"I6ARXUKAWJK7","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I6ARXUKAWJK7KXHT","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I6ARXUKA","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:17d5da3717f4f2fe193bc4c9745b7a940ec2dc02d4cdeb9717242408a053ab55","target":"graph","created_at":"2026-05-18T01:30:55Z","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 present a study of the properties of the O-type, massive eclipsing binary 2MASS J13130841-6239275 located in the outskirts of the Danks 2 cluster in the G305 star-forming complex, using near-infrared spectroscopy from VLT/ISAAC. We derive the masses and radii to be 24.5$\\pm$0.9 M$_{\\odot}$ and 9.2$\\pm$0.1 R$_{\\odot}$ for the primary and 21.7$\\pm$0.8 M$_{\\odot}$ and 8.7$\\pm$0.1 R$_{\\odot}$ for the secondary component. In addition, we evaluate the sensitivity of our parameters to the choice of the spectral features used to determine the radial velocities. Both components appear to be main-seq","authors_text":"A.Z. Bonanos, E. Koumpia, J.L. Prieto, M. Kourniotis, N. Castro, S.J. Williams","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-24T20:03:46Z","title":"Accurate fundamental parameters and distance to a massive early-type eclipsing binary in the Danks 2 cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.05939","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":"sha256:2efc7dc7fc5ae65054096a5c6e738496b6c9ee91a81f5dc21a0334224a3166c0","target":"record","created_at":"2026-05-18T01:30:55Z","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":"d3cc9508bea128475e801305c259a75dea42d8da8fb5326debdb7fa9b80edfb4","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-24T20:03:46Z","title_canon_sha256":"6b0098a3ce9dffe2fd01b815c72b8ceb271b0db1804a6b228329d95c9a8f0491"},"schema_version":"1.0","source":{"id":"1508.05939","kind":"arxiv","version":1}},"canonical_sha256":"47811bd140b255f55cf3b691f6a0761dd15f791fe56bcb08c2702e6adf62c945","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47811bd140b255f55cf3b691f6a0761dd15f791fe56bcb08c2702e6adf62c945","first_computed_at":"2026-05-18T01:30:55.897630Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:55.897630Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8em2q2U7hrTnOi8Le2zyXioDjUFl4DeLGy+aBypx6+4fESTH3NZHQ8Sba65XoNVmLUkNKO/iDbhHTbblnl3FCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:55.898127Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.05939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2efc7dc7fc5ae65054096a5c6e738496b6c9ee91a81f5dc21a0334224a3166c0","sha256:17d5da3717f4f2fe193bc4c9745b7a940ec2dc02d4cdeb9717242408a053ab55"],"state_sha256":"5a5d1705a7a5d5a09ba6fb099ea939c5755efe383e4e30a1e9e6ccf0b847d336"}