{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DKJAU2HU2KQ2CDDJHNKHYFXIHM","short_pith_number":"pith:DKJAU2HU","canonical_record":{"source":{"id":"1805.05645","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-15T08:55:26Z","cross_cats_sorted":[],"title_canon_sha256":"ef7ef08aadc85dce3a0cb26ec7c24acce8ef265b70bbfa1f69d7df7136903622","abstract_canon_sha256":"17e45a8a38d3b303a10236c95478dddf75386d562f7f5c59a527f5a0a26a1929"},"schema_version":"1.0"},"canonical_sha256":"1a920a68f4d2a1a10c693b547c16e83b1c33d79c44e0c008c3827ebc06b2dba0","source":{"kind":"arxiv","id":"1805.05645","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05645","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05645v1","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05645","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"pith_short_12","alias_value":"DKJAU2HU2KQ2","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"pith_short_16","alias_value":"DKJAU2HU2KQ2CDDJ","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"pith_short_8","alias_value":"DKJAU2HU","created_at":"2026-07-05T00:16:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DKJAU2HU2KQ2CDDJHNKHYFXIHM","target":"record","payload":{"canonical_record":{"source":{"id":"1805.05645","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-15T08:55:26Z","cross_cats_sorted":[],"title_canon_sha256":"ef7ef08aadc85dce3a0cb26ec7c24acce8ef265b70bbfa1f69d7df7136903622","abstract_canon_sha256":"17e45a8a38d3b303a10236c95478dddf75386d562f7f5c59a527f5a0a26a1929"},"schema_version":"1.0"},"canonical_sha256":"1a920a68f4d2a1a10c693b547c16e83b1c33d79c44e0c008c3827ebc06b2dba0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:16:57.809011Z","signature_b64":"KTqyj48PjQrixqJLNuPvsmbS9vXmy9vBuxPxEnoGnMNvTHwVfj5wT9mgU60A2R0iM1qVDzyn3wnmGP2bpi2SBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a920a68f4d2a1a10c693b547c16e83b1c33d79c44e0c008c3827ebc06b2dba0","last_reissued_at":"2026-07-05T00:16:57.808480Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:16:57.808480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.05645","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:16:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"enGq6N4s3AOJDf5M20jzAMr56tejsxdiZFDf+sq4aiLkwA4Mk7PNmhobYXGPPYZ0mxBfKC1Tj7svNzxrkVzlAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T16:51:44.117739Z"},"content_sha256":"e27b851433b9bcc1c0dee095050995099d88973d4194bc5a9f97687b2e635380","schema_version":"1.0","event_id":"sha256:e27b851433b9bcc1c0dee095050995099d88973d4194bc5a9f97687b2e635380"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DKJAU2HU2KQ2CDDJHNKHYFXIHM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orbital and spectral analysis of the benchmark brown dwarf HD 4747B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Boccaletti, A. Cheetham, A.-L. Maire, A-M. Lagrange, A. Pavlov, A. Sevin, A. Vigan, A. Zurlo, B. Lavie, C. Soenke, D. Mesa, D. Rouan, D. S\\'egransan, E. Hugot, E. Stadler, F. Menard, F. Wildi, G. Chauvin, G. Rousset, H. Le Coroller, J. Hagelberg, J.-L. Baudino, J. Pragt, J. Ramos, K. Heng, L. Gluck, L. Weber, M. Bonnefoy, M. Carbillet, M. Carle, M. Feldt, M. Janson, M. Langlois, M. Meyer, M. Samland, P. Rabou, R. Gratton, S. Daemgen, S. Desidera, S. Peretti, S. Udry, T. Moulin, T. Schmidt, V. De Caprio, V. D'Orazi, Y. Magnard","submitted_at":"2018-05-15T08:55:26Z","abstract_excerpt":"The study of high contrast imaged brown dwarfs and exoplanets depends strongly on evolutionary models. To estimate the mass of a directly imaged substellar object, its extracted photometry or spectrum is used and adjusted with model spectra together with the estimated age of the system. These models still need to be properly tested and constrained. HD 4747B is a brown dwarf close to the H burning mass limit, orbiting a nearby, solar-type star and has been observed with the radial velocity method over almost two decades now. Its companion was also recently detected by direct imaging, allowing a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05645","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1805.05645/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:16:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VhKWJvnnJNhd522bgJy7CCLegH9kUk35f4/gNh/rZIhe/ikMqjhD8/WB8p/9eoYUIUhfxU5Gx5n59FbBP7P+AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T16:51:44.118315Z"},"content_sha256":"f8cffb869a272736af5af5f39d0c6f3ff269d713c024c17809085ca1d366ed9b","schema_version":"1.0","event_id":"sha256:f8cffb869a272736af5af5f39d0c6f3ff269d713c024c17809085ca1d366ed9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM/bundle.json","state_url":"https://pith.science/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-11T16:51:44Z","links":{"resolver":"https://pith.science/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM","bundle":"https://pith.science/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM/bundle.json","state":"https://pith.science/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DKJAU2HU2KQ2CDDJHNKHYFXIHM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DKJAU2HU2KQ2CDDJHNKHYFXIHM","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":"17e45a8a38d3b303a10236c95478dddf75386d562f7f5c59a527f5a0a26a1929","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-15T08:55:26Z","title_canon_sha256":"ef7ef08aadc85dce3a0cb26ec7c24acce8ef265b70bbfa1f69d7df7136903622"},"schema_version":"1.0","source":{"id":"1805.05645","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05645","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05645v1","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05645","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"pith_short_12","alias_value":"DKJAU2HU2KQ2","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"pith_short_16","alias_value":"DKJAU2HU2KQ2CDDJ","created_at":"2026-07-05T00:16:57Z"},{"alias_kind":"pith_short_8","alias_value":"DKJAU2HU","created_at":"2026-07-05T00:16:57Z"}],"graph_snapshots":[{"event_id":"sha256:f8cffb869a272736af5af5f39d0c6f3ff269d713c024c17809085ca1d366ed9b","target":"graph","created_at":"2026-07-05T00:16:57Z","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/1805.05645/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The study of high contrast imaged brown dwarfs and exoplanets depends strongly on evolutionary models. To estimate the mass of a directly imaged substellar object, its extracted photometry or spectrum is used and adjusted with model spectra together with the estimated age of the system. These models still need to be properly tested and constrained. HD 4747B is a brown dwarf close to the H burning mass limit, orbiting a nearby, solar-type star and has been observed with the radial velocity method over almost two decades now. Its companion was also recently detected by direct imaging, allowing a","authors_text":"A. Boccaletti, A. Cheetham, A.-L. Maire, A-M. Lagrange, A. Pavlov, A. Sevin, A. Vigan, A. Zurlo, B. Lavie, C. Soenke, D. Mesa, D. Rouan, D. S\\'egransan, E. Hugot, E. Stadler, F. Menard, F. Wildi, G. Chauvin, G. Rousset, H. Le Coroller, J. Hagelberg, J.-L. Baudino, J. Pragt, J. Ramos, K. Heng, L. Gluck, L. Weber, M. Bonnefoy, M. Carbillet, M. Carle, M. Feldt, M. Janson, M. Langlois, M. Meyer, M. Samland, P. Rabou, R. Gratton, S. Daemgen, S. Desidera, S. Peretti, S. Udry, T. Moulin, T. Schmidt, V. De Caprio, V. D'Orazi, Y. Magnard","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-15T08:55:26Z","title":"Orbital and spectral analysis of the benchmark brown dwarf HD 4747B"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05645","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:e27b851433b9bcc1c0dee095050995099d88973d4194bc5a9f97687b2e635380","target":"record","created_at":"2026-07-05T00:16:57Z","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":"17e45a8a38d3b303a10236c95478dddf75386d562f7f5c59a527f5a0a26a1929","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-05-15T08:55:26Z","title_canon_sha256":"ef7ef08aadc85dce3a0cb26ec7c24acce8ef265b70bbfa1f69d7df7136903622"},"schema_version":"1.0","source":{"id":"1805.05645","kind":"arxiv","version":1}},"canonical_sha256":"1a920a68f4d2a1a10c693b547c16e83b1c33d79c44e0c008c3827ebc06b2dba0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1a920a68f4d2a1a10c693b547c16e83b1c33d79c44e0c008c3827ebc06b2dba0","first_computed_at":"2026-07-05T00:16:57.808480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:16:57.808480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KTqyj48PjQrixqJLNuPvsmbS9vXmy9vBuxPxEnoGnMNvTHwVfj5wT9mgU60A2R0iM1qVDzyn3wnmGP2bpi2SBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:16:57.809011Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.05645","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e27b851433b9bcc1c0dee095050995099d88973d4194bc5a9f97687b2e635380","sha256:f8cffb869a272736af5af5f39d0c6f3ff269d713c024c17809085ca1d366ed9b"],"state_sha256":"ad6b434ce2f4885a514b12057b927f624f3f8506003db5213031b2afe18e94f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"STIs+ELDF1nZ2WTo8AFYjU5JcxF4ZCbGYiCe0CnzHKGZsRXdy0Qa5t6VNdVLR7BStELHqk7OwtOFxrs32/rEAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T16:51:44.123785Z","bundle_sha256":"e22dff67f7d11cb0a696dc78cca9a2b11355da4c115143442809021dd8e9161d"}}