{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:Z4OASKOPUYYBHG7APKTTN2HBCI","short_pith_number":"pith:Z4OASKOP","canonical_record":{"source":{"id":"astro-ph/0007270","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-07-18T17:41:13Z","cross_cats_sorted":[],"title_canon_sha256":"eac6e7b719209c9aa6c60bd570e19c76096cdd52ed61cb285e390b6e8e9c5b0e","abstract_canon_sha256":"fa12ec0b88f0633b4bd7ad2f86191155eb211de4ad4976f69ddfbf0e62166d48"},"schema_version":"1.0"},"canonical_sha256":"cf1c0929cfa630139be07aa736e8e11232c3404f047c759b222a7086db04716e","source":{"kind":"arxiv","id":"astro-ph/0007270","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0007270","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0007270v1","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0007270","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"pith_short_12","alias_value":"Z4OASKOPUYYB","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"pith_short_16","alias_value":"Z4OASKOPUYYBHG7A","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"pith_short_8","alias_value":"Z4OASKOP","created_at":"2026-07-04T14:10:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:Z4OASKOPUYYBHG7APKTTN2HBCI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0007270","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-07-18T17:41:13Z","cross_cats_sorted":[],"title_canon_sha256":"eac6e7b719209c9aa6c60bd570e19c76096cdd52ed61cb285e390b6e8e9c5b0e","abstract_canon_sha256":"fa12ec0b88f0633b4bd7ad2f86191155eb211de4ad4976f69ddfbf0e62166d48"},"schema_version":"1.0"},"canonical_sha256":"cf1c0929cfa630139be07aa736e8e11232c3404f047c759b222a7086db04716e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:10:30.541891Z","signature_b64":"COkeFcPEwGClZJCw1l0lqj5QCvhOEp2wHdPw70xara3uymON32yFV1QoCoTtmQb1bcyh/L+Oi2mejpwfMY0SBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf1c0929cfa630139be07aa736e8e11232c3404f047c759b222a7086db04716e","last_reissued_at":"2026-07-04T14:10:30.541517Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:10:30.541517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0007270","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":"2026-07-04T14:10:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5R/JREl6nMBUuQxzfvqatRfys+IqoZG8RJXcs4N/cqJ+SK1XOaI0N/CUi4+XxgZdM6r5BsLsF4NZWlPT5YNEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T06:44:16.355702Z"},"content_sha256":"c07ce3c669a85ed58d3ce6697d3417cb78e05a20d88ba79d593b6857094740f6","schema_version":"1.0","event_id":"sha256:c07ce3c669a85ed58d3ce6697d3417cb78e05a20d88ba79d593b6857094740f6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:Z4OASKOPUYYBHG7APKTTN2HBCI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mapping the star formation history of Mrk86: II. Stellar populations and global interpretation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Gil de Paz, J. Gallego (1) ((1) Dept. Astrofisica, J. Zamorano, UCM)","submitted_at":"2000-07-18T17:41:13Z","abstract_excerpt":"In this paper, continuation of Gil de Paz et al. (Paper I), we derive the main properties of the stellar populations in the Blue Compact Dwarf galaxy Mrk86. Ages, stellar masses, metallicites and burst strengths have been obtained using the combination of Monte Carlo simulations, a maximum likelihood estimator and Cluster and Principal Component Analysis. The three stellar populations detected show well defined properties. We have studied the underlying stellar population, which shows an age between 5-13 Gyr and no significant color gradients. The intermediate aged (30 Myr old) central starbur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0007270","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/0007270/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":"2026-07-04T14:10:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bHj3S+fxgIbRBh6AXlFx3amQO3U1MpNKoCHRB7ubXGh4E2iDSghqLQ8zIdbyzxtjvjlb+z6K8FlfLDHPKJo2DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T06:44:16.356186Z"},"content_sha256":"50fbad299e4c30f746a29c38dae327e781e89eb00d8e392fd01218d1dd8fbce8","schema_version":"1.0","event_id":"sha256:50fbad299e4c30f746a29c38dae327e781e89eb00d8e392fd01218d1dd8fbce8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4OASKOPUYYBHG7APKTTN2HBCI/bundle.json","state_url":"https://pith.science/pith/Z4OASKOPUYYBHG7APKTTN2HBCI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4OASKOPUYYBHG7APKTTN2HBCI/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":"2026-08-04T06:44:16Z","links":{"resolver":"https://pith.science/pith/Z4OASKOPUYYBHG7APKTTN2HBCI","bundle":"https://pith.science/pith/Z4OASKOPUYYBHG7APKTTN2HBCI/bundle.json","state":"https://pith.science/pith/Z4OASKOPUYYBHG7APKTTN2HBCI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4OASKOPUYYBHG7APKTTN2HBCI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:Z4OASKOPUYYBHG7APKTTN2HBCI","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":"fa12ec0b88f0633b4bd7ad2f86191155eb211de4ad4976f69ddfbf0e62166d48","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-07-18T17:41:13Z","title_canon_sha256":"eac6e7b719209c9aa6c60bd570e19c76096cdd52ed61cb285e390b6e8e9c5b0e"},"schema_version":"1.0","source":{"id":"astro-ph/0007270","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0007270","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0007270v1","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0007270","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"pith_short_12","alias_value":"Z4OASKOPUYYB","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"pith_short_16","alias_value":"Z4OASKOPUYYBHG7A","created_at":"2026-07-04T14:10:30Z"},{"alias_kind":"pith_short_8","alias_value":"Z4OASKOP","created_at":"2026-07-04T14:10:30Z"}],"graph_snapshots":[{"event_id":"sha256:50fbad299e4c30f746a29c38dae327e781e89eb00d8e392fd01218d1dd8fbce8","target":"graph","created_at":"2026-07-04T14:10:30Z","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/0007270/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, continuation of Gil de Paz et al. (Paper I), we derive the main properties of the stellar populations in the Blue Compact Dwarf galaxy Mrk86. Ages, stellar masses, metallicites and burst strengths have been obtained using the combination of Monte Carlo simulations, a maximum likelihood estimator and Cluster and Principal Component Analysis. The three stellar populations detected show well defined properties. We have studied the underlying stellar population, which shows an age between 5-13 Gyr and no significant color gradients. The intermediate aged (30 Myr old) central starbur","authors_text":"A. Gil de Paz, J. Gallego (1) ((1) Dept. Astrofisica, J. Zamorano, UCM)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-07-18T17:41:13Z","title":"Mapping the star formation history of Mrk86: II. Stellar populations and global interpretation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0007270","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:c07ce3c669a85ed58d3ce6697d3417cb78e05a20d88ba79d593b6857094740f6","target":"record","created_at":"2026-07-04T14:10:30Z","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":"fa12ec0b88f0633b4bd7ad2f86191155eb211de4ad4976f69ddfbf0e62166d48","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-07-18T17:41:13Z","title_canon_sha256":"eac6e7b719209c9aa6c60bd570e19c76096cdd52ed61cb285e390b6e8e9c5b0e"},"schema_version":"1.0","source":{"id":"astro-ph/0007270","kind":"arxiv","version":1}},"canonical_sha256":"cf1c0929cfa630139be07aa736e8e11232c3404f047c759b222a7086db04716e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf1c0929cfa630139be07aa736e8e11232c3404f047c759b222a7086db04716e","first_computed_at":"2026-07-04T14:10:30.541517Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:10:30.541517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"COkeFcPEwGClZJCw1l0lqj5QCvhOEp2wHdPw70xara3uymON32yFV1QoCoTtmQb1bcyh/L+Oi2mejpwfMY0SBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:10:30.541891Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0007270","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c07ce3c669a85ed58d3ce6697d3417cb78e05a20d88ba79d593b6857094740f6","sha256:50fbad299e4c30f746a29c38dae327e781e89eb00d8e392fd01218d1dd8fbce8"],"state_sha256":"43fd4a8cd3d98e840002dbf02b5dac81b0bb17ae4645e7f79be7cd3e6b14d0ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YfTcFrXRQRE31rvsMMyw7JF4nbR38e589JPDqDDHZlHtNn7702WKifRjJ4eIImkqLgnmaCMEE3548WeSwsliAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T06:44:16.359826Z","bundle_sha256":"7b91891c73406bfa55b90ece64b55dca697680dcdced5c5b9264a6f2596e24ed"}}