{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:47O3FUBIT2BKKYU34NKJ54HVVU","short_pith_number":"pith:47O3FUBI","canonical_record":{"source":{"id":"astro-ph/0409601","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-25T08:07:31Z","cross_cats_sorted":[],"title_canon_sha256":"997d61eefebdc5463f47c2c870f7039aa308192c17c5167a5e4c78873f129e30","abstract_canon_sha256":"26152edf63a158798c2e904122af02d70c56deb217328b09a8f2139846e27255"},"schema_version":"1.0"},"canonical_sha256":"e7ddb2d0289e82a5629be3549ef0f5ad368a4afadc5d3a0d801a67779fd431b4","source":{"kind":"arxiv","id":"astro-ph/0409601","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0409601","created_at":"2026-05-18T01:27:16Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0409601v1","created_at":"2026-05-18T01:27:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0409601","created_at":"2026-05-18T01:27:16Z"},{"alias_kind":"pith_short_12","alias_value":"47O3FUBIT2BK","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"47O3FUBIT2BKKYU3","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"47O3FUBI","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:47O3FUBIT2BKKYU34NKJ54HVVU","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0409601","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-25T08:07:31Z","cross_cats_sorted":[],"title_canon_sha256":"997d61eefebdc5463f47c2c870f7039aa308192c17c5167a5e4c78873f129e30","abstract_canon_sha256":"26152edf63a158798c2e904122af02d70c56deb217328b09a8f2139846e27255"},"schema_version":"1.0"},"canonical_sha256":"e7ddb2d0289e82a5629be3549ef0f5ad368a4afadc5d3a0d801a67779fd431b4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:16.573705Z","signature_b64":"dqRPYT1nD3rL38W7NUNHOYBk4mWhVkdFEGFGxlHi+Hq/AEAp2vekaIyczYMQNfeC/O7Rzm9eQXr+Py4++1E+Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7ddb2d0289e82a5629be3549ef0f5ad368a4afadc5d3a0d801a67779fd431b4","last_reissued_at":"2026-05-18T01:27:16.573258Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:16.573258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0409601","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":"2026-05-18T01:27:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kvzReYAU4C5feLMioay9GKCxtTq/Kb8bGHD8wMMUIxL2Ox+FUsP8GEp+0vcR4wRsb4lHOIaU8tg4/p4+a0USAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T21:44:15.963415Z"},"content_sha256":"9afd6701450faf01900887c082ce0861480b8d4c5fdacd6cd4ca05a9233d2de6","schema_version":"1.0","event_id":"sha256:9afd6701450faf01900887c082ce0861480b8d4c5fdacd6cd4ca05a9233d2de6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:47O3FUBIT2BKKYU34NKJ54HVVU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The stellar IMF of Galactic clusters and its evolution","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Francesco Paresce (ESO), Guido De Marchi (ESA), Simon Portegies Zwart (UVA)","submitted_at":"2004-09-25T08:07:31Z","abstract_excerpt":"We show that one can obtain a good fit to the measured main sequence mass function (MF) of a large sample of Galactic clusters (young and old) with a tapered Salpeter power law distribution function with an exponential truncation. The average value of the power law index is very close to Salpeter (~2.3), whereas the characteristic mass is in the range 0.1 - 0.5 Msolar and does not seem to vary in a systematic way with the present cluster parameters such as metal abundance and central concentration. However, a remarkable correlation with age is seen, in that the peak mass of young clusters incr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0409601","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":"2026-05-18T01:27:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7HhGSq6e0yLNcgb8SVr1n84RcxUNh8ZvS/vnHJn9iZu1ffFFyPtmZCmmETq3iBBN03Leij3EtiuZnbF51xIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T21:44:15.963760Z"},"content_sha256":"9073a58111732e8b5cc763b89d8ced73f3310cf21364f43b7088291acdbf44b0","schema_version":"1.0","event_id":"sha256:9073a58111732e8b5cc763b89d8ced73f3310cf21364f43b7088291acdbf44b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/47O3FUBIT2BKKYU34NKJ54HVVU/bundle.json","state_url":"https://pith.science/pith/47O3FUBIT2BKKYU34NKJ54HVVU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/47O3FUBIT2BKKYU34NKJ54HVVU/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":"2026-06-24T21:44:15Z","links":{"resolver":"https://pith.science/pith/47O3FUBIT2BKKYU34NKJ54HVVU","bundle":"https://pith.science/pith/47O3FUBIT2BKKYU34NKJ54HVVU/bundle.json","state":"https://pith.science/pith/47O3FUBIT2BKKYU34NKJ54HVVU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/47O3FUBIT2BKKYU34NKJ54HVVU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:47O3FUBIT2BKKYU34NKJ54HVVU","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":"26152edf63a158798c2e904122af02d70c56deb217328b09a8f2139846e27255","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-25T08:07:31Z","title_canon_sha256":"997d61eefebdc5463f47c2c870f7039aa308192c17c5167a5e4c78873f129e30"},"schema_version":"1.0","source":{"id":"astro-ph/0409601","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0409601","created_at":"2026-05-18T01:27:16Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0409601v1","created_at":"2026-05-18T01:27:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0409601","created_at":"2026-05-18T01:27:16Z"},{"alias_kind":"pith_short_12","alias_value":"47O3FUBIT2BK","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"47O3FUBIT2BKKYU3","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"47O3FUBI","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:9073a58111732e8b5cc763b89d8ced73f3310cf21364f43b7088291acdbf44b0","target":"graph","created_at":"2026-05-18T01:27:16Z","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 show that one can obtain a good fit to the measured main sequence mass function (MF) of a large sample of Galactic clusters (young and old) with a tapered Salpeter power law distribution function with an exponential truncation. The average value of the power law index is very close to Salpeter (~2.3), whereas the characteristic mass is in the range 0.1 - 0.5 Msolar and does not seem to vary in a systematic way with the present cluster parameters such as metal abundance and central concentration. However, a remarkable correlation with age is seen, in that the peak mass of young clusters incr","authors_text":"Francesco Paresce (ESO), Guido De Marchi (ESA), Simon Portegies Zwart (UVA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-09-25T08:07:31Z","title":"The stellar IMF of Galactic clusters and its evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0409601","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":"sha256:9afd6701450faf01900887c082ce0861480b8d4c5fdacd6cd4ca05a9233d2de6","target":"record","created_at":"2026-05-18T01:27:16Z","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":"26152edf63a158798c2e904122af02d70c56deb217328b09a8f2139846e27255","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-25T08:07:31Z","title_canon_sha256":"997d61eefebdc5463f47c2c870f7039aa308192c17c5167a5e4c78873f129e30"},"schema_version":"1.0","source":{"id":"astro-ph/0409601","kind":"arxiv","version":1}},"canonical_sha256":"e7ddb2d0289e82a5629be3549ef0f5ad368a4afadc5d3a0d801a67779fd431b4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7ddb2d0289e82a5629be3549ef0f5ad368a4afadc5d3a0d801a67779fd431b4","first_computed_at":"2026-05-18T01:27:16.573258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:16.573258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dqRPYT1nD3rL38W7NUNHOYBk4mWhVkdFEGFGxlHi+Hq/AEAp2vekaIyczYMQNfeC/O7Rzm9eQXr+Py4++1E+Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:16.573705Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0409601","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9afd6701450faf01900887c082ce0861480b8d4c5fdacd6cd4ca05a9233d2de6","sha256:9073a58111732e8b5cc763b89d8ced73f3310cf21364f43b7088291acdbf44b0"],"state_sha256":"3cc493c5359c7a0ea41d130a8a42d7337fa68d2b04136770c3d1f01c6f1b6abd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UOweb9nTd9NacLdKu6QmV5W4qtaO3uXphVilqkzHVVVbwfK6WmaLXBXJKd0ahHdVZvztyXa0C9oJaNnberv7AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T21:44:15.965664Z","bundle_sha256":"9af2da64f0e4b98aeba94c0514e3fb944e2bdc46dde67993525c4662a0a7fafe"}}