{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:US74QYWYVQXNMZTMRGFN5RDTAP","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":"745c5900aa8c5b5e0b649e15a80244e1b2dbba98b764a62ae4729caf43f7d957","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-24T19:59:59Z","title_canon_sha256":"70dc99b052292e154ee576391dd9b6fef786003ec8e029f6401c9a3c5d8dbea4"},"schema_version":"1.0","source":{"id":"1506.07517","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07517","created_at":"2026-05-18T01:35:07Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07517v1","created_at":"2026-05-18T01:35:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07517","created_at":"2026-05-18T01:35:07Z"},{"alias_kind":"pith_short_12","alias_value":"US74QYWYVQXN","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"US74QYWYVQXNMZTM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"US74QYWY","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:2d9311558b1ebd5578b8e485aa4c4ff6b3c42a8692422020a7f0d2238752abd8","target":"graph","created_at":"2026-05-18T01:35:07Z","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 direct image of the innermost companion to the red giant delta Andromedae using the Stellar Double Coronagraph at the Palomar Observatory. We use a Markov chain Monte Carlo based algorithm to simultaneously reduce the data and perform astrometry and photometry of the companion. We determine that the companion is most likely a main-sequence K-type star and is certainly not the previously hypothesized white dwarf.","authors_text":"Bertrand Mennesson, Dimitri Mawet, Eugene Serabyn, Jean C. Shelton, J. Kent Wallace, Jonas Kuhn, Michael Bottom","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-24T19:59:59Z","title":"Resolving the delta Andromedae spectroscopic binary with direct imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07517","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:f8887ab59d617ee6dee6073dd39ae5bf2ce45d2af6da7d5402789dc3cd604233","target":"record","created_at":"2026-05-18T01:35:07Z","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":"745c5900aa8c5b5e0b649e15a80244e1b2dbba98b764a62ae4729caf43f7d957","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-24T19:59:59Z","title_canon_sha256":"70dc99b052292e154ee576391dd9b6fef786003ec8e029f6401c9a3c5d8dbea4"},"schema_version":"1.0","source":{"id":"1506.07517","kind":"arxiv","version":1}},"canonical_sha256":"a4bfc862d8ac2ed6666c898adec47303f3b221aadf9ef5ce20ed729d214dc1fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a4bfc862d8ac2ed6666c898adec47303f3b221aadf9ef5ce20ed729d214dc1fc","first_computed_at":"2026-05-18T01:35:07.444142Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:07.444142Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cwojo2mTw3oNld1eVAPOzKcLmytII458KsBX6mydhOpojV7QjziD2O8FLA9mFw7YzNjilvTc5UzPZbgh5cW7AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:07.444826Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.07517","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8887ab59d617ee6dee6073dd39ae5bf2ce45d2af6da7d5402789dc3cd604233","sha256:2d9311558b1ebd5578b8e485aa4c4ff6b3c42a8692422020a7f0d2238752abd8"],"state_sha256":"4515d8091a46d43731db3d36f64bd6ad3fbb973d33b8cb4d46ad49460fe8b7b4"}