{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7IHG7EU7L3UGW7FXMMV6LGWG2Q","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":"a2c7c19ad57f3d60d878e47b2550445a0e4f5adaafcd171a1ba550118f182965","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-12-07T18:10:31Z","title_canon_sha256":"a13716352bcd0b372470f5ae31c6e82c5448a3e0a14ca7194feb45c664f0cd38"},"schema_version":"1.0","source":{"id":"1512.02146","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.02146","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"arxiv_version","alias_value":"1512.02146v1","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.02146","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"pith_short_12","alias_value":"7IHG7EU7L3UG","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7IHG7EU7L3UGW7FX","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7IHG7EU7","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:f598f32deb5c20dd1d4a6a8ee0542f42538f5b95c748f222d3360ca22a13e9d7","target":"graph","created_at":"2026-05-18T01:20:08Z","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 observations of CK Vul obtained with the Spitzer Space Telescope. The infrared spectrum reveals a warm dust continuum with nebular, molecular hydrogen and HCN lines superimposed, together with the \"Unidentified Infrared\" (UIR) features. The nebular lines are consistent with emission by a low density gas. We conclude that the Spitzer data, combined with other information, are incompatible with CK Vul being a classical nova remnant in \"hibernation\" after the event of 1670, a \"Very Late Thermal Pulse\", a \"Luminous Red Variable\" such as V838 Mon, or a \"Diffusion-induced nova\". The true ","authors_text":"A. Evans (Astrophysics Group, C. E. Woodward (University of Minnesota), J. Th. van Loon (Keele University), Keele University), L. A. Helton (SOFIA/USRA), P. J. Sarre (University of Nottingham), R. D. Gehrz, S. P. S. Eyres (University of Central Lancashire), S. Starrfield (Arizona State University)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-12-07T18:10:31Z","title":"CK Vul: a smorgasbord of hydrocarbons rules out a 1670 nova (and much else besides)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.02146","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:c50d17236cd5d8a10a0b5c227e677e6835a1661075e1d981f708d86018313758","target":"record","created_at":"2026-05-18T01:20:08Z","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":"a2c7c19ad57f3d60d878e47b2550445a0e4f5adaafcd171a1ba550118f182965","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-12-07T18:10:31Z","title_canon_sha256":"a13716352bcd0b372470f5ae31c6e82c5448a3e0a14ca7194feb45c664f0cd38"},"schema_version":"1.0","source":{"id":"1512.02146","kind":"arxiv","version":1}},"canonical_sha256":"fa0e6f929f5ee86b7cb7632be59ac6d43cf0466eb2c00af9a14cb9ef6435bedc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa0e6f929f5ee86b7cb7632be59ac6d43cf0466eb2c00af9a14cb9ef6435bedc","first_computed_at":"2026-05-18T01:20:08.712382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:08.712382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L/0cZrXl2jWMgsHX2xOxqiHb+gdgtZuwPM43X2T34wu55PL/qIIVFZdwGuup+bKlee4xwIM0Afbb0mJwn81jAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:08.713008Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.02146","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c50d17236cd5d8a10a0b5c227e677e6835a1661075e1d981f708d86018313758","sha256:f598f32deb5c20dd1d4a6a8ee0542f42538f5b95c748f222d3360ca22a13e9d7"],"state_sha256":"ae1b21d24658017b22aa633215830d353ea72ffbc1112827e03efcd3fe4bd3e5"}