{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5JIF57RCBRIUGZXPVNT76KQHM7","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":"1d4d7f47e1ae7023a638fcd84349bb3ac0827a12c533355ecdb678a34d9ff6c7","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-23T20:00:01Z","title_canon_sha256":"bbfe6e1b5199b69ce25bdde256d4587381a66acba346d4449dbaeefd9a255388"},"schema_version":"1.0","source":{"id":"1603.07331","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.07331","created_at":"2026-05-18T01:15:39Z"},{"alias_kind":"arxiv_version","alias_value":"1603.07331v1","created_at":"2026-05-18T01:15:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.07331","created_at":"2026-05-18T01:15:39Z"},{"alias_kind":"pith_short_12","alias_value":"5JIF57RCBRIU","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5JIF57RCBRIUGZXP","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5JIF57RC","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:e21dbccadb02a898d51d28f594296580129e6422676ed73316787b12effc4714","target":"graph","created_at":"2026-05-18T01:15:39Z","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 near infrared (NIR) spectroscopic and photometric observations of the nearby Type Ia SN 2014J. The seventeen NIR spectra span epochs from +15.3 to +92.5 days after $B$-band maximum light, while the $JHK_s$ photometry include epochs from $-$10 to +71 days. This data is used to constrain the progenitor system of SN 2014J utilizing the Pa$\\beta$ line, following recent suggestions that this phase period and the NIR in particular are excellent for constraining the amount of swept up hydrogen-rich material associated with a non-degenerate companion star. We find no evidence for Pa$\\beta$ ","authors_text":"D. J. Sand, D.P.K. Banerjee, E.Y. Hsiao, G.H. Marion, J.T. Parrent, M. D. Stritzinger, M. M. Phillips, T. R. Diamond, V. Joshi, V. Venkataraman","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-23T20:00:01Z","title":"Post-maximum near infrared spectra of SN 2014J: A search for interaction signatures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.07331","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":"sha256:6897d57909ef546b9dd525b83ed98a4b6ec6b26d308445bb887aceefd40f6245","target":"record","created_at":"2026-05-18T01:15:39Z","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":"1d4d7f47e1ae7023a638fcd84349bb3ac0827a12c533355ecdb678a34d9ff6c7","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-23T20:00:01Z","title_canon_sha256":"bbfe6e1b5199b69ce25bdde256d4587381a66acba346d4449dbaeefd9a255388"},"schema_version":"1.0","source":{"id":"1603.07331","kind":"arxiv","version":1}},"canonical_sha256":"ea505efe220c514366efab67ff2a0767e1de01f5a3d36820bd3b3479c780057f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea505efe220c514366efab67ff2a0767e1de01f5a3d36820bd3b3479c780057f","first_computed_at":"2026-05-18T01:15:39.749042Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:15:39.749042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G4Po2TX3lNgnPZw+iAeIor+fZoTxrv+E4a+1a4I5ZN/yCUGsbVpgoooN+FYMnDH76VXgb47nLVswl/c9N8U1CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:15:39.749674Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.07331","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6897d57909ef546b9dd525b83ed98a4b6ec6b26d308445bb887aceefd40f6245","sha256:e21dbccadb02a898d51d28f594296580129e6422676ed73316787b12effc4714"],"state_sha256":"095149ab706b25f2dfe9b2218115ca7cf07dc48e63187ccc1f0b6b30a94f8a74"}