{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:23Z5A2CZPVPT2OH5K556OVJJUU","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":"80f677705751c84b690de2ca6c39eab8380da40f7e8e2ac49a06b27fb4b8978e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-12-14T13:35:03Z","title_canon_sha256":"3c4557fadb9dc8e2bc171a683415c113a292a348c571f39d24c75b887cb6d34f"},"schema_version":"1.0","source":{"id":"1712.05217","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.05217","created_at":"2026-05-18T00:13:30Z"},{"alias_kind":"arxiv_version","alias_value":"1712.05217v1","created_at":"2026-05-18T00:13:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.05217","created_at":"2026-05-18T00:13:30Z"},{"alias_kind":"pith_short_12","alias_value":"23Z5A2CZPVPT","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"23Z5A2CZPVPT2OH5","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"23Z5A2CZ","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:7cbb03c99e0173e821502f9c940b0d96001cd2eacc8a870ae0b857d4ea23b6d0","target":"graph","created_at":"2026-05-18T00:13:30Z","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":"Using high-contrast imaging with the SPHERE instrument at the VLT, we report the first images of a cold brown dwarf companion to the exoplanet host star HD4113A. The brown dwarf HD4113C is part of a complex dynamical system consisting of a giant planet, stellar host and a known wide M-dwarf companion. Its separation of $535\\pm3$mas and H-band contrast of $13.35\\pm0.10$mag correspond to a projected separation of 22AU and an isochronal mass estimate of $36\\pm5$M$_J$ based on COND models. The companion shows strong methane absorption, and through atmospheric model fitting we estimate a surface gr","authors_text":"A. Cheetham, D. S\\'egransan, F. Wildi, J.-B. Delisle, J. Hagelberg, J-L. Beuzit, M. Marmier, S. Peretti, S.Udry, T. Forveille","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-12-14T13:35:03Z","title":"Direct imaging of an ultracool substellar companion to the exoplanet host star HD 4113A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.05217","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":"sha256:8de1a22a0bcd289bac964e335af4284f20d6d81d6cd76a304ab9178b7782c2d5","target":"record","created_at":"2026-05-18T00:13:30Z","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":"80f677705751c84b690de2ca6c39eab8380da40f7e8e2ac49a06b27fb4b8978e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-12-14T13:35:03Z","title_canon_sha256":"3c4557fadb9dc8e2bc171a683415c113a292a348c571f39d24c75b887cb6d34f"},"schema_version":"1.0","source":{"id":"1712.05217","kind":"arxiv","version":1}},"canonical_sha256":"d6f3d068597d5f3d38fd577be75529a50cf179e970bf2ae63c6815a30987297c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6f3d068597d5f3d38fd577be75529a50cf179e970bf2ae63c6815a30987297c","first_computed_at":"2026-05-18T00:13:30.965109Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:30.965109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZK3xGj0Udpv3k+nHD7q9wOI1ki/11ZP25HLJiHPjPOIF2OI0D6Muljy4PEp4LFYKaB7e5qGApUSBwDAVOlOOBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:30.965629Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.05217","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8de1a22a0bcd289bac964e335af4284f20d6d81d6cd76a304ab9178b7782c2d5","sha256:7cbb03c99e0173e821502f9c940b0d96001cd2eacc8a870ae0b857d4ea23b6d0"],"state_sha256":"7764744fc77ac39a1b6de09842fb5b696b756d921f8acd7c8034973804727e24"}