{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:KOSHPEMOMX4UGE4I2T3H7KLIEE","short_pith_number":"pith:KOSHPEMO","canonical_record":{"source":{"id":"astro-ph/0606644","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-27T15:11:51Z","cross_cats_sorted":[],"title_canon_sha256":"97d9fa3905bf3f9699ebdeb3627ccd45516dcec544feca1130f4ae3e47852c86","abstract_canon_sha256":"50008cca5c46e2f6e1ce230478d76448966ab8aa5c87a4ac148a92ae1388e860"},"schema_version":"1.0"},"canonical_sha256":"53a477918e65f9431388d4f67fa96821010794a08122ef4c39f610aef28bf24a","source":{"kind":"arxiv","id":"astro-ph/0606644","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0606644","created_at":"2026-05-18T04:36:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0606644v1","created_at":"2026-05-18T04:36:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0606644","created_at":"2026-05-18T04:36:21Z"},{"alias_kind":"pith_short_12","alias_value":"KOSHPEMOMX4U","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"KOSHPEMOMX4UGE4I","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"KOSHPEMO","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:KOSHPEMOMX4UGE4I2T3H7KLIEE","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0606644","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-27T15:11:51Z","cross_cats_sorted":[],"title_canon_sha256":"97d9fa3905bf3f9699ebdeb3627ccd45516dcec544feca1130f4ae3e47852c86","abstract_canon_sha256":"50008cca5c46e2f6e1ce230478d76448966ab8aa5c87a4ac148a92ae1388e860"},"schema_version":"1.0"},"canonical_sha256":"53a477918e65f9431388d4f67fa96821010794a08122ef4c39f610aef28bf24a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:36:21.232647Z","signature_b64":"5g4xkNzSy9XirHux82u7soKM1XLyMsxpiK8X57G8xBrb+N5o5643v5CLw5nvBKOWkjlxri8oVET79UhgjPZ9DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53a477918e65f9431388d4f67fa96821010794a08122ef4c39f610aef28bf24a","last_reissued_at":"2026-05-18T04:36:21.232101Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:36:21.232101Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0606644","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":"2026-05-18T04:36:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tp1dOlE4zFpJA9M0p7FWHPswKTbYvxb4ghh3qrKKhvBg0m0FsY6nwrc5W1b4TNtcz0gIu4oVzHkwJDFKBGsvCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:02:44.556870Z"},"content_sha256":"6e8b2ea50d2dcdcbd1afbe42e009866e6f187a41b76d7b85881c5f804df67237","schema_version":"1.0","event_id":"sha256:6e8b2ea50d2dcdcbd1afbe42e009866e6f187a41b76d7b85881c5f804df67237"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:KOSHPEMOMX4UGE4I2T3H7KLIEE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Nature of Interstellar Gas toward the Pleiades Revealed in Absorption Lines","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. M. Ritchey, D. L. Lambert, K. Pan, M. Martinez, S. R. Federman","submitted_at":"2006-06-27T15:11:51Z","abstract_excerpt":"We present high-resolution, high signal to noise absorption-line observations of CN, Ca II, Ca I, CH^+, and CH along twenty lines of sight toward members of the Pleiades. The acquired data enable the most detailed study to date of the interaction between cluster stars and the surrounding interstellar gas. Total equivalent widths are consistent with previous investigations except where weaker features are detected owing to our greater sensitivity. Mean b-values for the molecular species indicate that toward most of the Pleiades CH is associated with the production of CH^+ rather than CN. An ana"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0606644","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":"2026-05-18T04:36:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6I9IgMCR7Y1lVes1PKvQGL32Ki99c33iIVRrKnXO2fJnzyUhVJ/xYJsDinkAfTmJzGb5kc5VjrktpEPZjwawCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:02:44.557215Z"},"content_sha256":"3e68eb492df3293335bedf2b76904b565a4b10b7177efeec169088cc8d9cea0e","schema_version":"1.0","event_id":"sha256:3e68eb492df3293335bedf2b76904b565a4b10b7177efeec169088cc8d9cea0e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE/bundle.json","state_url":"https://pith.science/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE/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":"2026-06-01T17:02:44Z","links":{"resolver":"https://pith.science/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE","bundle":"https://pith.science/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE/bundle.json","state":"https://pith.science/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KOSHPEMOMX4UGE4I2T3H7KLIEE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:KOSHPEMOMX4UGE4I2T3H7KLIEE","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":"50008cca5c46e2f6e1ce230478d76448966ab8aa5c87a4ac148a92ae1388e860","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-27T15:11:51Z","title_canon_sha256":"97d9fa3905bf3f9699ebdeb3627ccd45516dcec544feca1130f4ae3e47852c86"},"schema_version":"1.0","source":{"id":"astro-ph/0606644","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0606644","created_at":"2026-05-18T04:36:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0606644v1","created_at":"2026-05-18T04:36:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0606644","created_at":"2026-05-18T04:36:21Z"},{"alias_kind":"pith_short_12","alias_value":"KOSHPEMOMX4U","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"KOSHPEMOMX4UGE4I","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"KOSHPEMO","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:3e68eb492df3293335bedf2b76904b565a4b10b7177efeec169088cc8d9cea0e","target":"graph","created_at":"2026-05-18T04:36:21Z","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"},"paper":{"abstract_excerpt":"We present high-resolution, high signal to noise absorption-line observations of CN, Ca II, Ca I, CH^+, and CH along twenty lines of sight toward members of the Pleiades. The acquired data enable the most detailed study to date of the interaction between cluster stars and the surrounding interstellar gas. Total equivalent widths are consistent with previous investigations except where weaker features are detected owing to our greater sensitivity. Mean b-values for the molecular species indicate that toward most of the Pleiades CH is associated with the production of CH^+ rather than CN. An ana","authors_text":"A. M. Ritchey, D. L. Lambert, K. Pan, M. Martinez, S. R. Federman","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-06-27T15:11:51Z","title":"The Nature of Interstellar Gas toward the Pleiades Revealed in Absorption Lines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0606644","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":"sha256:6e8b2ea50d2dcdcbd1afbe42e009866e6f187a41b76d7b85881c5f804df67237","target":"record","created_at":"2026-05-18T04:36:21Z","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":"50008cca5c46e2f6e1ce230478d76448966ab8aa5c87a4ac148a92ae1388e860","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-27T15:11:51Z","title_canon_sha256":"97d9fa3905bf3f9699ebdeb3627ccd45516dcec544feca1130f4ae3e47852c86"},"schema_version":"1.0","source":{"id":"astro-ph/0606644","kind":"arxiv","version":1}},"canonical_sha256":"53a477918e65f9431388d4f67fa96821010794a08122ef4c39f610aef28bf24a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53a477918e65f9431388d4f67fa96821010794a08122ef4c39f610aef28bf24a","first_computed_at":"2026-05-18T04:36:21.232101Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:36:21.232101Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5g4xkNzSy9XirHux82u7soKM1XLyMsxpiK8X57G8xBrb+N5o5643v5CLw5nvBKOWkjlxri8oVET79UhgjPZ9DA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:36:21.232647Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0606644","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e8b2ea50d2dcdcbd1afbe42e009866e6f187a41b76d7b85881c5f804df67237","sha256:3e68eb492df3293335bedf2b76904b565a4b10b7177efeec169088cc8d9cea0e"],"state_sha256":"07dace875bf105fb04581c207a8de54b0ae0ce39aa9d405f35cf301fb31ce3a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TdHzWU/2IodnSd8m3L3NAjGYt5+rUlSwZKbvCu5N84GLPreIhokaVNey3oBnZSNK4yAM48psZfh55bzvhnMxDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:02:44.559222Z","bundle_sha256":"c7ce8aaebba4e847b3413e790af03fa3ef1f0bcd44cc9ee06e69c985bfe528ec"}}