{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:5TM3FISZ7ZY7E7LWUELV4IMOHH","short_pith_number":"pith:5TM3FISZ","canonical_record":{"source":{"id":"2407.10818","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-07-15T15:34:14Z","cross_cats_sorted":[],"title_canon_sha256":"8c9cb8c452e0cd3a33f2c88e89f83cabf6b80e98bb6d983214eb2cdb1c1e29b6","abstract_canon_sha256":"661d2cb79234d75da9aacba17ec217c232a81736b7d239fe723922dad2767028"},"schema_version":"1.0"},"canonical_sha256":"ecd9b2a259fe71f27d76a1175e218e39e1d70de3402e833eb7cbafc2ceece957","source":{"kind":"arxiv","id":"2407.10818","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.10818","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"arxiv_version","alias_value":"2407.10818v1","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.10818","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"pith_short_12","alias_value":"5TM3FISZ7ZY7","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"pith_short_16","alias_value":"5TM3FISZ7ZY7E7LW","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"pith_short_8","alias_value":"5TM3FISZ","created_at":"2026-07-05T09:14:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:5TM3FISZ7ZY7E7LWUELV4IMOHH","target":"record","payload":{"canonical_record":{"source":{"id":"2407.10818","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-07-15T15:34:14Z","cross_cats_sorted":[],"title_canon_sha256":"8c9cb8c452e0cd3a33f2c88e89f83cabf6b80e98bb6d983214eb2cdb1c1e29b6","abstract_canon_sha256":"661d2cb79234d75da9aacba17ec217c232a81736b7d239fe723922dad2767028"},"schema_version":"1.0"},"canonical_sha256":"ecd9b2a259fe71f27d76a1175e218e39e1d70de3402e833eb7cbafc2ceece957","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:14:21.739298Z","signature_b64":"d7NYHkYp/gUW7MrcoqRwWwiatXjMchM/GZCX2wFKFMWjI5pHUsr40XdmD7BqJ74202k8J9zVvc32jBVhWVY0BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ecd9b2a259fe71f27d76a1175e218e39e1d70de3402e833eb7cbafc2ceece957","last_reissued_at":"2026-07-05T09:14:21.738849Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:14:21.738849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2407.10818","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":"2026-07-05T09:14:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Hba8ywO70RQAVr9fSWbv7oXbQagkafPBoVAqTWgUFnSzBQAyhI3p3Jwjgphk6WW20iRBuOHV8iNgpnCI2z3Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T01:44:20.374555Z"},"content_sha256":"f799997c7783c03d286fc79c5f2bb7a622783d6c7e459814d2ff3b69a82dc398","schema_version":"1.0","event_id":"sha256:f799997c7783c03d286fc79c5f2bb7a622783d6c7e459814d2ff3b69a82dc398"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:5TM3FISZ7ZY7E7LWUELV4IMOHH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extragalactic 85Rb/87Rb and 6Li/7Li ratios in the Small Magellanic Cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"C. Howk, G. Cupani, P. Bonifacio, P. Molaro","submitted_at":"2024-07-15T15:34:14Z","abstract_excerpt":"The line of sight toward Sk 143 (AzV 456), an O9.5 Ib star in the Small Magellanic Cloud (SMC), shows significant absorption from neutral atoms and molecules. We report a new study of this line of sight by means of high-resolution spectra obtained with the ESPRESSO spectrograph at the VLT of ESO. The absorption from neutral and ionized species is well characterized by a single component at vhel about +132 km/s that was modeled with the ASTROCOOK code. The rubidium Rb I 780.0 nm line is detected for the first time outside the Galaxy, and we derive [Rb/H]= -1.86 +/- 0.09. As a result of the high"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.10818","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/2407.10818/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":"2026-07-05T09:14:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9etDtRUhqiPBjZxO2g9acUidTA+aC0TGKue5WkOXXkc6ywU94JGwuFoQ8qFuFr+pLHSt2Bd8y0Wg7A3p+nw1Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T01:44:20.375109Z"},"content_sha256":"3bae897eaa4316ada0c1cf7f88f028fe200c1712a1652bae154e3f8a8da00efb","schema_version":"1.0","event_id":"sha256:3bae897eaa4316ada0c1cf7f88f028fe200c1712a1652bae154e3f8a8da00efb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH/bundle.json","state_url":"https://pith.science/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH/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":"2026-08-10T01:44:20Z","links":{"resolver":"https://pith.science/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH","bundle":"https://pith.science/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH/bundle.json","state":"https://pith.science/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5TM3FISZ7ZY7E7LWUELV4IMOHH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:5TM3FISZ7ZY7E7LWUELV4IMOHH","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":"661d2cb79234d75da9aacba17ec217c232a81736b7d239fe723922dad2767028","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-07-15T15:34:14Z","title_canon_sha256":"8c9cb8c452e0cd3a33f2c88e89f83cabf6b80e98bb6d983214eb2cdb1c1e29b6"},"schema_version":"1.0","source":{"id":"2407.10818","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.10818","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"arxiv_version","alias_value":"2407.10818v1","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.10818","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"pith_short_12","alias_value":"5TM3FISZ7ZY7","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"pith_short_16","alias_value":"5TM3FISZ7ZY7E7LW","created_at":"2026-07-05T09:14:21Z"},{"alias_kind":"pith_short_8","alias_value":"5TM3FISZ","created_at":"2026-07-05T09:14:21Z"}],"graph_snapshots":[{"event_id":"sha256:3bae897eaa4316ada0c1cf7f88f028fe200c1712a1652bae154e3f8a8da00efb","target":"graph","created_at":"2026-07-05T09:14:21Z","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/2407.10818/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The line of sight toward Sk 143 (AzV 456), an O9.5 Ib star in the Small Magellanic Cloud (SMC), shows significant absorption from neutral atoms and molecules. We report a new study of this line of sight by means of high-resolution spectra obtained with the ESPRESSO spectrograph at the VLT of ESO. The absorption from neutral and ionized species is well characterized by a single component at vhel about +132 km/s that was modeled with the ASTROCOOK code. The rubidium Rb I 780.0 nm line is detected for the first time outside the Galaxy, and we derive [Rb/H]= -1.86 +/- 0.09. As a result of the high","authors_text":"C. Howk, G. Cupani, P. Bonifacio, P. Molaro","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-07-15T15:34:14Z","title":"Extragalactic 85Rb/87Rb and 6Li/7Li ratios in the Small Magellanic Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.10818","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:f799997c7783c03d286fc79c5f2bb7a622783d6c7e459814d2ff3b69a82dc398","target":"record","created_at":"2026-07-05T09:14:21Z","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":"661d2cb79234d75da9aacba17ec217c232a81736b7d239fe723922dad2767028","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-07-15T15:34:14Z","title_canon_sha256":"8c9cb8c452e0cd3a33f2c88e89f83cabf6b80e98bb6d983214eb2cdb1c1e29b6"},"schema_version":"1.0","source":{"id":"2407.10818","kind":"arxiv","version":1}},"canonical_sha256":"ecd9b2a259fe71f27d76a1175e218e39e1d70de3402e833eb7cbafc2ceece957","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ecd9b2a259fe71f27d76a1175e218e39e1d70de3402e833eb7cbafc2ceece957","first_computed_at":"2026-07-05T09:14:21.738849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:14:21.738849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d7NYHkYp/gUW7MrcoqRwWwiatXjMchM/GZCX2wFKFMWjI5pHUsr40XdmD7BqJ74202k8J9zVvc32jBVhWVY0BA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:14:21.739298Z","signed_message":"canonical_sha256_bytes"},"source_id":"2407.10818","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f799997c7783c03d286fc79c5f2bb7a622783d6c7e459814d2ff3b69a82dc398","sha256:3bae897eaa4316ada0c1cf7f88f028fe200c1712a1652bae154e3f8a8da00efb"],"state_sha256":"ef2afcdafe462065bff4c5dfc72bab46c299e28412e43bb0350f25a19a987dd6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oC1LW99uQw9kD1EruwDu4tSmTUEpqDAYkXmm3JQN4lIH00Wj2WD9uqOc81DD41JzlmzLNVPNEw0T8ukxaVPBDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T01:44:20.380522Z","bundle_sha256":"cc4ea10bb76422ebe16d6e94314fcded1e2042cf4b8a122de400453c414411cf"}}