{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:Y32CNPGYTXAHQQXA54ZC5UDVPN","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":"b5dfabb0541c45e26df1a8e1428303e03d0674e562225c59157abba9bc652c54","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-24T19:00:01Z","title_canon_sha256":"8e556e849a1d2aa070a71da83ed86ad1e210da3e0260ee9875ecf0a9472690fd"},"schema_version":"1.0","source":{"id":"2002.10467","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.10467","created_at":"2026-07-05T00:45:24Z"},{"alias_kind":"arxiv_version","alias_value":"2002.10467v1","created_at":"2026-07-05T00:45:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.10467","created_at":"2026-07-05T00:45:24Z"},{"alias_kind":"pith_short_12","alias_value":"Y32CNPGYTXAH","created_at":"2026-07-05T00:45:24Z"},{"alias_kind":"pith_short_16","alias_value":"Y32CNPGYTXAHQQXA","created_at":"2026-07-05T00:45:24Z"},{"alias_kind":"pith_short_8","alias_value":"Y32CNPGY","created_at":"2026-07-05T00:45:24Z"}],"graph_snapshots":[{"event_id":"sha256:422c78e543d877d4ae901a699ec23b7293cf14853274b05c7c94910fb869b5aa","target":"graph","created_at":"2026-07-05T00:45:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2002.10467/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the discovery of a white dwarf companion at 3.6\" from GJ3346, a nearby ($\\pi\\sim$42 mas) K star observed with SPHERE@VLT as part of an open time survey for faint companions to objects with significant proper motion discrepancies ($\\Delta\\mu$) between Gaia DR1 and Tycho-2. Syrius-like systems like GJ3346AB, which include a main sequence star and a white dwarf, can be difficult to detect because of the intrinsic faintness of the latter. They have, however, been found to be common contaminants for direct imaging searches. White dwarfs have in fact similar brightness to sub-stellar comp","authors_text":"A. Sozzetti, A. Zurlo, B. Biller, C. Fontanive, D. Mesa, K. Muzic, M. Bonavita, R. Gratton, S. Desidera, V. D'Orazi","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-24T19:00:01Z","title":"A new white dwarf companion to the $\\Delta\\mu$ star GJ 3346"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.10467","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":"sha256:01e810e6076c52477f566b68db8bcbe1f9b027b6b65431b90d8e0be01fbf4a54","target":"record","created_at":"2026-07-05T00:45:24Z","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":"b5dfabb0541c45e26df1a8e1428303e03d0674e562225c59157abba9bc652c54","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-24T19:00:01Z","title_canon_sha256":"8e556e849a1d2aa070a71da83ed86ad1e210da3e0260ee9875ecf0a9472690fd"},"schema_version":"1.0","source":{"id":"2002.10467","kind":"arxiv","version":1}},"canonical_sha256":"c6f426bcd89dc07842e0ef322ed0757b5fd7935342a2bb8c2ca05c7378022915","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6f426bcd89dc07842e0ef322ed0757b5fd7935342a2bb8c2ca05c7378022915","first_computed_at":"2026-07-05T00:45:24.459524Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:45:24.459524Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pwn6BTpOrMCFyWnApCVPK2kuFci+WzCsZIHFeuAjb+JbxXGSiXAmnuKzXkFnseUOX31h6CjtO0SzFTKC3HxjBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:45:24.459963Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.10467","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01e810e6076c52477f566b68db8bcbe1f9b027b6b65431b90d8e0be01fbf4a54","sha256:422c78e543d877d4ae901a699ec23b7293cf14853274b05c7c94910fb869b5aa"],"state_sha256":"c320c697b0c221d700469ec01bd326abe5ffa0c169f5ee4fe4c6ed579ce1b752"}