{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:6JTYMDUDWBK2Y54MMR5KAQJ7W2","short_pith_number":"pith:6JTYMDUD","canonical_record":{"source":{"id":"astro-ph/9702225","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-02-26T08:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"8071c9fd54707033ba0e7e2c3adede3ede4ebae22b95434b4451ff6bcb3b9e5c","abstract_canon_sha256":"8894c2fc5dab019531f9f208384f59d336b6bc648d27243357eeb1c2dde3f32c"},"schema_version":"1.0"},"canonical_sha256":"f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763","source":{"kind":"arxiv","id":"astro-ph/9702225","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9702225","created_at":"2026-05-18T01:07:38Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9702225v1","created_at":"2026-05-18T01:07:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9702225","created_at":"2026-05-18T01:07:38Z"},{"alias_kind":"pith_short_12","alias_value":"6JTYMDUDWBK2","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"6JTYMDUDWBK2Y54M","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"6JTYMDUD","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:6JTYMDUDWBK2Y54MMR5KAQJ7W2","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9702225","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-02-26T08:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"8071c9fd54707033ba0e7e2c3adede3ede4ebae22b95434b4451ff6bcb3b9e5c","abstract_canon_sha256":"8894c2fc5dab019531f9f208384f59d336b6bc648d27243357eeb1c2dde3f32c"},"schema_version":"1.0"},"canonical_sha256":"f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:38.657349Z","signature_b64":"cYYRsHkPDpSGKjPoOxEKFhY9pUxY20p9XTP5IWCXLTKaPwmEpdZ2FjHbUXJobQtyrZgXVXNVAwfiQ/5pCnSPAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763","last_reissued_at":"2026-05-18T01:07:38.656753Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:38.656753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9702225","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":"2026-05-18T01:07:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9PQori+Ulk+2Vmf6nES4bptjiKLOJolps+BQVZK2fs0/jRXFGyr7tVkfIK7W/rarnA2ixlalmH6dB3XX43J3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:07:16.142463Z"},"content_sha256":"047a23d15603e91bfbeae92c5bb313a6f72655f69e7752c5f532ec205b374245","schema_version":"1.0","event_id":"sha256:047a23d15603e91bfbeae92c5bb313a6f72655f69e7752c5f532ec205b374245"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:6JTYMDUDWBK2Y54MMR5KAQJ7W2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A very reduced upper limit on the interstellar abundance of beryllium","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alfred Vidal-Madjar, Guillaume H\\'ebrard, Martin Lemoine, Roger Ferlet","submitted_at":"1997-02-26T08:32:40Z","abstract_excerpt":"We present the results of observations of the $\\lambda 3130.4$ \\AA interstellar absorption line of Be II in the direction of zeta Per. The data were obtained at the Canada-France-Hawaii 3.6m Telescope using the Coud\\'e f/4 Gecko spectrograph at a resolving power $\\simeq 1.1 \\times 10^5$, and a signal-to-noise ratio S/N $\\simeq$ 2000. The Be II line is not detected, and we obtain an upper limit on the equivalent width $W_{3130.4}\\leq30$ $\\mu$\\AA. This upper limit is 7 times below the lowest upper limit ever reported hitherto. The derived interstellar abundance is ($^9$Be/H) $\\leq 7 \\times 10^{-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9702225","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":""},"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":"2026-05-18T01:07:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ng/+zyzYwd024KcTbEbhayrIG6bCykct7jOxRkHnvRslJDSPRdCqrp9GRnef2eejEzqVww+FYuthde9ymLYwAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:07:16.143054Z"},"content_sha256":"2ddb6e86c93d1ef5655afc5a8a876b3868c89b403104e259a5af87f51d3965de","schema_version":"1.0","event_id":"sha256:2ddb6e86c93d1ef5655afc5a8a876b3868c89b403104e259a5af87f51d3965de"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2/bundle.json","state_url":"https://pith.science/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2/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":"2026-05-28T19:07:16Z","links":{"resolver":"https://pith.science/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2","bundle":"https://pith.science/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2/bundle.json","state":"https://pith.science/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6JTYMDUDWBK2Y54MMR5KAQJ7W2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:6JTYMDUDWBK2Y54MMR5KAQJ7W2","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":"8894c2fc5dab019531f9f208384f59d336b6bc648d27243357eeb1c2dde3f32c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-02-26T08:32:40Z","title_canon_sha256":"8071c9fd54707033ba0e7e2c3adede3ede4ebae22b95434b4451ff6bcb3b9e5c"},"schema_version":"1.0","source":{"id":"astro-ph/9702225","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9702225","created_at":"2026-05-18T01:07:38Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9702225v1","created_at":"2026-05-18T01:07:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9702225","created_at":"2026-05-18T01:07:38Z"},{"alias_kind":"pith_short_12","alias_value":"6JTYMDUDWBK2","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"6JTYMDUDWBK2Y54M","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"6JTYMDUD","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:2ddb6e86c93d1ef5655afc5a8a876b3868c89b403104e259a5af87f51d3965de","target":"graph","created_at":"2026-05-18T01:07:38Z","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 the results of observations of the $\\lambda 3130.4$ \\AA interstellar absorption line of Be II in the direction of zeta Per. The data were obtained at the Canada-France-Hawaii 3.6m Telescope using the Coud\\'e f/4 Gecko spectrograph at a resolving power $\\simeq 1.1 \\times 10^5$, and a signal-to-noise ratio S/N $\\simeq$ 2000. The Be II line is not detected, and we obtain an upper limit on the equivalent width $W_{3130.4}\\leq30$ $\\mu$\\AA. This upper limit is 7 times below the lowest upper limit ever reported hitherto. The derived interstellar abundance is ($^9$Be/H) $\\leq 7 \\times 10^{-","authors_text":"Alfred Vidal-Madjar, Guillaume H\\'ebrard, Martin Lemoine, Roger Ferlet","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-02-26T08:32:40Z","title":"A very reduced upper limit on the interstellar abundance of beryllium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9702225","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":"sha256:047a23d15603e91bfbeae92c5bb313a6f72655f69e7752c5f532ec205b374245","target":"record","created_at":"2026-05-18T01:07:38Z","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":"8894c2fc5dab019531f9f208384f59d336b6bc648d27243357eeb1c2dde3f32c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-02-26T08:32:40Z","title_canon_sha256":"8071c9fd54707033ba0e7e2c3adede3ede4ebae22b95434b4451ff6bcb3b9e5c"},"schema_version":"1.0","source":{"id":"astro-ph/9702225","kind":"arxiv","version":1}},"canonical_sha256":"f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f267860e83b055ac778c647aa0413fb69eca2f7973ed70a0d27324d9473cf763","first_computed_at":"2026-05-18T01:07:38.656753Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:38.656753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cYYRsHkPDpSGKjPoOxEKFhY9pUxY20p9XTP5IWCXLTKaPwmEpdZ2FjHbUXJobQtyrZgXVXNVAwfiQ/5pCnSPAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:38.657349Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9702225","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:047a23d15603e91bfbeae92c5bb313a6f72655f69e7752c5f532ec205b374245","sha256:2ddb6e86c93d1ef5655afc5a8a876b3868c89b403104e259a5af87f51d3965de"],"state_sha256":"d4a378a47af727b384216ea78e0bf5dbece125ee2c94063618c5a87bb408748f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"obkspITzZZUlblfEtkQgtdOtYokjr5Ss2rYzyPk+uIyH59l2JaH1VipheCovkzXw/8NDsr/vJNCeh3OZ/PHMAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T19:07:16.146443Z","bundle_sha256":"5a954a3be7879f892c36305b4e00d42f604e44121849bf5c57493a3f8bdf69b6"}}