{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:HH5F5V4K7EGXD6WZS7V3OLSSDW","short_pith_number":"pith:HH5F5V4K","schema_version":"1.0","canonical_sha256":"39fa5ed78af90d71fad997ebb72e521d9e66809e1254e4b0f1457c5c56e81640","source":{"kind":"arxiv","id":"0902.3460","version":1},"attestation_state":"computed","paper":{"title":"The Detection of Inside-out Disk Growth in M33","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Andrew E. Dolphin, Ata Sarajedini, Benjamin F. Williams, Jon Holtzman, Julianne J. Dalcanton","submitted_at":"2009-02-19T21:01:19Z","abstract_excerpt":"We present resolved stellar photometry of 4 fields along the major axis of the M33 disk from images taken with the Advanced Camera for Surveys aboard the Hubble Space Telescope. The photometry provides a detailed census of the red clump in all fields and reaches the ancient main sequence in the outermost field. Through detailed modeling of the color-magnitude diagrams, we find that the percentage of the stellar mass formed prior to z=1 changes from 71 +/- 9% in the innermost field to 16 +/- 6% in the outermost field. The disk shows a clear trend of increasing scale-length with time, evolving f"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0902.3460","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-19T21:01:19Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"7e025ffedf57981d64c425d70ebdd3635af2bbe986afcb778f8d9cf5bfac06e2","abstract_canon_sha256":"6e1e22625d171a1649bfa96096c346b59fad9ecdd04712d14ac53fd1557a37de"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:15.600802Z","signature_b64":"2CAqCzcfYV2KWB8oZ+o4slomsS6LH/Ar7bHG9+L9jXu04tuOEpsZbXYgv+sMArqXbqrAUiklmX647FxM8FsyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"39fa5ed78af90d71fad997ebb72e521d9e66809e1254e4b0f1457c5c56e81640","last_reissued_at":"2026-05-18T04:17:15.600007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:15.600007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Detection of Inside-out Disk Growth in M33","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Andrew E. Dolphin, Ata Sarajedini, Benjamin F. Williams, Jon Holtzman, Julianne J. Dalcanton","submitted_at":"2009-02-19T21:01:19Z","abstract_excerpt":"We present resolved stellar photometry of 4 fields along the major axis of the M33 disk from images taken with the Advanced Camera for Surveys aboard the Hubble Space Telescope. The photometry provides a detailed census of the red clump in all fields and reaches the ancient main sequence in the outermost field. Through detailed modeling of the color-magnitude diagrams, we find that the percentage of the stellar mass formed prior to z=1 changes from 71 +/- 9% in the innermost field to 16 +/- 6% in the outermost field. The disk shows a clear trend of increasing scale-length with time, evolving f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.3460","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0902.3460","created_at":"2026-05-18T04:17:15.600148+00:00"},{"alias_kind":"arxiv_version","alias_value":"0902.3460v1","created_at":"2026-05-18T04:17:15.600148+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.3460","created_at":"2026-05-18T04:17:15.600148+00:00"},{"alias_kind":"pith_short_12","alias_value":"HH5F5V4K7EGX","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"HH5F5V4K7EGXD6WZ","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"HH5F5V4K","created_at":"2026-05-18T12:25:59.703012+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW","json":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW.json","graph_json":"https://pith.science/api/pith-number/HH5F5V4K7EGXD6WZS7V3OLSSDW/graph.json","events_json":"https://pith.science/api/pith-number/HH5F5V4K7EGXD6WZS7V3OLSSDW/events.json","paper":"https://pith.science/paper/HH5F5V4K"},"agent_actions":{"view_html":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW","download_json":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW.json","view_paper":"https://pith.science/paper/HH5F5V4K","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0902.3460&json=true","fetch_graph":"https://pith.science/api/pith-number/HH5F5V4K7EGXD6WZS7V3OLSSDW/graph.json","fetch_events":"https://pith.science/api/pith-number/HH5F5V4K7EGXD6WZS7V3OLSSDW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW/action/storage_attestation","attest_author":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW/action/author_attestation","sign_citation":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW/action/citation_signature","submit_replication":"https://pith.science/pith/HH5F5V4K7EGXD6WZS7V3OLSSDW/action/replication_record"}},"created_at":"2026-05-18T04:17:15.600148+00:00","updated_at":"2026-05-18T04:17:15.600148+00:00"}