{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:O3B5CSDA65ISBXT7JHE23BS35W","short_pith_number":"pith:O3B5CSDA","canonical_record":{"source":{"id":"astro-ph/0501278","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-14T12:41:23Z","cross_cats_sorted":[],"title_canon_sha256":"aeae009274b636618d8b5f8b1318e8156e2ab59124294c57182bcced269e9180","abstract_canon_sha256":"2dda375968f393f676f8087b89910791961e32639af77133615dd21838085396"},"schema_version":"1.0"},"canonical_sha256":"76c3d14860f75120de7f49c9ad865beda9fefe772f2a29aefac107999a70da9d","source":{"kind":"arxiv","id":"astro-ph/0501278","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0501278","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0501278v1","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0501278","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"pith_short_12","alias_value":"O3B5CSDA65IS","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"pith_short_16","alias_value":"O3B5CSDA65ISBXT7","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"pith_short_8","alias_value":"O3B5CSDA","created_at":"2026-07-04T16:50:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:O3B5CSDA65ISBXT7JHE23BS35W","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0501278","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-14T12:41:23Z","cross_cats_sorted":[],"title_canon_sha256":"aeae009274b636618d8b5f8b1318e8156e2ab59124294c57182bcced269e9180","abstract_canon_sha256":"2dda375968f393f676f8087b89910791961e32639af77133615dd21838085396"},"schema_version":"1.0"},"canonical_sha256":"76c3d14860f75120de7f49c9ad865beda9fefe772f2a29aefac107999a70da9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:50:37.746956Z","signature_b64":"beTkxCwiCXPQ/1oCdE20msFJp22riOUBPOL4VuH+QPVCQL6EZRDccGyQFphhHhEBrPtW9PnSKqmqXA60zk6FCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76c3d14860f75120de7f49c9ad865beda9fefe772f2a29aefac107999a70da9d","last_reissued_at":"2026-07-04T16:50:37.746591Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:50:37.746591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0501278","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":"2026-07-04T16:50:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ddzYaFPjQ0yrWyWFR0azMiM+W5T7ptlWDPo+ID84IwxgV1nF7Xt+aKPqOyQ8nYBDpJwUVY1dat4PY7x7LHhCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T23:57:56.360722Z"},"content_sha256":"c68597035166f7dd607453a9d18207019dd1492f17716baa092bbc961c209d38","schema_version":"1.0","event_id":"sha256:c68597035166f7dd607453a9d18207019dd1492f17716baa092bbc961c209d38"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:O3B5CSDA65ISBXT7JHE23BS35W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modelling and interpreting optical spectra of galaxies at R=10000","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ariane Lancon, Brigitte Rocca-Volmerange, Caroline Soubiran, Christophe Pichon, Damien Le Borgne, Michel Fioc, Philippe Prugniel, Pierre Ocvirk","submitted_at":"2005-01-14T12:41:23Z","abstract_excerpt":"One way to extract more information from the integrated light of galaxies is to improve the spectral resolution at which observations and analysis are carried out. The population synthesis code currently providing the highest spectral resolution is Pegase-HR, which was made available by D. Le Borgne et al. in 2004. Based on an empirical stellar library, it provides synthetic spectra between 4000 and 6800 A at lambda/d(lambda)=10000 for any star formation history, with or without chemical evolution. Such a resolution is particularly useful for the study of low mass galaxies, massive star cluste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0501278","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/astro-ph/0501278/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":"2026-07-04T16:50:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DgHoBAvIewB7OzGg1/pk271cto1oTsAG0sjTFRwsIT2fJoZr5LfB8AtIsbZlZkkz418YCgRoXZ99vJHFcoILAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T23:57:56.361130Z"},"content_sha256":"692203fdddd03e573ec4c3ccde1a6e696d61d2d9f054df0120a4a16c808de7d1","schema_version":"1.0","event_id":"sha256:692203fdddd03e573ec4c3ccde1a6e696d61d2d9f054df0120a4a16c808de7d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O3B5CSDA65ISBXT7JHE23BS35W/bundle.json","state_url":"https://pith.science/pith/O3B5CSDA65ISBXT7JHE23BS35W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O3B5CSDA65ISBXT7JHE23BS35W/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":"2026-07-15T23:57:56Z","links":{"resolver":"https://pith.science/pith/O3B5CSDA65ISBXT7JHE23BS35W","bundle":"https://pith.science/pith/O3B5CSDA65ISBXT7JHE23BS35W/bundle.json","state":"https://pith.science/pith/O3B5CSDA65ISBXT7JHE23BS35W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O3B5CSDA65ISBXT7JHE23BS35W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:O3B5CSDA65ISBXT7JHE23BS35W","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":"2dda375968f393f676f8087b89910791961e32639af77133615dd21838085396","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-14T12:41:23Z","title_canon_sha256":"aeae009274b636618d8b5f8b1318e8156e2ab59124294c57182bcced269e9180"},"schema_version":"1.0","source":{"id":"astro-ph/0501278","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0501278","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0501278v1","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0501278","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"pith_short_12","alias_value":"O3B5CSDA65IS","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"pith_short_16","alias_value":"O3B5CSDA65ISBXT7","created_at":"2026-07-04T16:50:37Z"},{"alias_kind":"pith_short_8","alias_value":"O3B5CSDA","created_at":"2026-07-04T16:50:37Z"}],"graph_snapshots":[{"event_id":"sha256:692203fdddd03e573ec4c3ccde1a6e696d61d2d9f054df0120a4a16c808de7d1","target":"graph","created_at":"2026-07-04T16:50:37Z","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/astro-ph/0501278/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"One way to extract more information from the integrated light of galaxies is to improve the spectral resolution at which observations and analysis are carried out. The population synthesis code currently providing the highest spectral resolution is Pegase-HR, which was made available by D. Le Borgne et al. in 2004. Based on an empirical stellar library, it provides synthetic spectra between 4000 and 6800 A at lambda/d(lambda)=10000 for any star formation history, with or without chemical evolution. Such a resolution is particularly useful for the study of low mass galaxies, massive star cluste","authors_text":"Ariane Lancon, Brigitte Rocca-Volmerange, Caroline Soubiran, Christophe Pichon, Damien Le Borgne, Michel Fioc, Philippe Prugniel, Pierre Ocvirk","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-01-14T12:41:23Z","title":"Modelling and interpreting optical spectra of galaxies at R=10000"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0501278","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:c68597035166f7dd607453a9d18207019dd1492f17716baa092bbc961c209d38","target":"record","created_at":"2026-07-04T16:50:37Z","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":"2dda375968f393f676f8087b89910791961e32639af77133615dd21838085396","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-01-14T12:41:23Z","title_canon_sha256":"aeae009274b636618d8b5f8b1318e8156e2ab59124294c57182bcced269e9180"},"schema_version":"1.0","source":{"id":"astro-ph/0501278","kind":"arxiv","version":1}},"canonical_sha256":"76c3d14860f75120de7f49c9ad865beda9fefe772f2a29aefac107999a70da9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76c3d14860f75120de7f49c9ad865beda9fefe772f2a29aefac107999a70da9d","first_computed_at":"2026-07-04T16:50:37.746591Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:50:37.746591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"beTkxCwiCXPQ/1oCdE20msFJp22riOUBPOL4VuH+QPVCQL6EZRDccGyQFphhHhEBrPtW9PnSKqmqXA60zk6FCw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:50:37.746956Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0501278","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c68597035166f7dd607453a9d18207019dd1492f17716baa092bbc961c209d38","sha256:692203fdddd03e573ec4c3ccde1a6e696d61d2d9f054df0120a4a16c808de7d1"],"state_sha256":"fda5cabc5fed16f7a0bcf286c4a81187475db466deae35096201f9f11dc934fc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6jR+yfjnjuI+skqiOULcNmEFs2n/6jLNewMz3BHVyHHLb4ybBy0IKGuVJOQ5RZi0wfFoCiy7lC6xk5AG8kQ8CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T23:57:56.363291Z","bundle_sha256":"507e8287f9abf8908b301ba544cd1b76ceb38427f29aff8498fd143aa3835480"}}