{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:4HF5EQYP2H76IGESKFL4LKQ6WF","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":"0431bc10d39a6726f0a915cb1b7e69f120313a7e00375fa341972242bfad9caa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-07T15:39:35Z","title_canon_sha256":"c4174860a9cdfbc29c33a4cf9a5d3fdf10a58f705be01c98583c91b5c7849655"},"schema_version":"1.0","source":{"id":"1505.01747","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01747","created_at":"2026-05-18T00:24:32Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01747v1","created_at":"2026-05-18T00:24:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01747","created_at":"2026-05-18T00:24:32Z"},{"alias_kind":"pith_short_12","alias_value":"4HF5EQYP2H76","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"4HF5EQYP2H76IGES","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"4HF5EQYP","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:b9a4d35f613d689346b90aaa18817d63a28da8d7b15de27313eef8e6463bcd39","target":"graph","created_at":"2026-05-18T00:24:32Z","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 report the discovery of a substellar companion to 2MASS J02192210-3925225, a young M6 $\\gamma$ candidate member of the Tucana-Horologium association (30 - 40 Myr). This L4 $\\gamma$ companion has been discovered with seeing-limited direct imaging observations; at a 4\" separation (160AU) and a modest contrast ratio, it joins the very short list of young low-mass companions amenable to study without the aid of adaptive optics, enabling its characterization with a much wider suite of instruments than is possible for companions uncovered by high-contrast imaging surveys. With a model-dependent m","authors_text":"David Lafreni\\`ere, \\'Etienne Artigau, Jacqueline Faherty, Jonathan Gagn\\'e, Lison Malo, Marie-Eve Naud, Ren\\'e Doyon, Yuri Beletsky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-07T15:39:35Z","title":"BANYAN. VI. Discovery of a companion at the brown dwarf/planet-mass limit to a Tucana-Horologium M dwarf"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01747","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":"sha256:85608065ab6722dd566ed96d3d5288da1db5ea77f2c9583305234be9306371bc","target":"record","created_at":"2026-05-18T00:24:32Z","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":"0431bc10d39a6726f0a915cb1b7e69f120313a7e00375fa341972242bfad9caa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-07T15:39:35Z","title_canon_sha256":"c4174860a9cdfbc29c33a4cf9a5d3fdf10a58f705be01c98583c91b5c7849655"},"schema_version":"1.0","source":{"id":"1505.01747","kind":"arxiv","version":1}},"canonical_sha256":"e1cbd2430fd1ffe418925157c5aa1eb153cb84623294d288924f1eec490f1fac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e1cbd2430fd1ffe418925157c5aa1eb153cb84623294d288924f1eec490f1fac","first_computed_at":"2026-05-18T00:24:32.082975Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:32.082975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hiRRphnHzVnqXchWFcKwjn1xjaF80w1NT2xy9IjRK/V9cUfslYxEEBCsjTo1WjvqjbPdAlWPEEdUhnFf1dFFBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:32.083383Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.01747","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85608065ab6722dd566ed96d3d5288da1db5ea77f2c9583305234be9306371bc","sha256:b9a4d35f613d689346b90aaa18817d63a28da8d7b15de27313eef8e6463bcd39"],"state_sha256":"d275ba879e763568d1383f0f96140041f1d2a08839397e956eae85b1d2bd8a1b"}