{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:MT3UECU2WZA7UTCWIRNW5C2J5N","short_pith_number":"pith:MT3UECU2","canonical_record":{"source":{"id":"astro-ph/0205070","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-06T10:06:20Z","cross_cats_sorted":[],"title_canon_sha256":"c897a53ac0cc32e68ca4b5fd2b6d7c16bb057e8d79437804acdcbd9ce818ed55","abstract_canon_sha256":"56166a11088d7761c96e4c3c7e565903be79e99638ca178dc50041e04b2ea1f3"},"schema_version":"1.0"},"canonical_sha256":"64f7420a9ab641fa4c56445b6e8b49eb577421747c1f7af23885127c156339c2","source":{"kind":"arxiv","id":"astro-ph/0205070","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0205070","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0205070v2","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0205070","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"pith_short_12","alias_value":"MT3UECU2WZA7","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"pith_short_16","alias_value":"MT3UECU2WZA7UTCW","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"pith_short_8","alias_value":"MT3UECU2","created_at":"2026-07-04T15:51:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:MT3UECU2WZA7UTCWIRNW5C2J5N","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0205070","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-06T10:06:20Z","cross_cats_sorted":[],"title_canon_sha256":"c897a53ac0cc32e68ca4b5fd2b6d7c16bb057e8d79437804acdcbd9ce818ed55","abstract_canon_sha256":"56166a11088d7761c96e4c3c7e565903be79e99638ca178dc50041e04b2ea1f3"},"schema_version":"1.0"},"canonical_sha256":"64f7420a9ab641fa4c56445b6e8b49eb577421747c1f7af23885127c156339c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:51:11.728597Z","signature_b64":"aTZ/oGxuDifqVtlZi+scEmpE5xWCxLcZGDH8zErMyiRgmz2G1Ac14sWNtnCuRJ62nvNS+pldzlxWfkrFZzwDBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64f7420a9ab641fa4c56445b6e8b49eb577421747c1f7af23885127c156339c2","last_reissued_at":"2026-07-04T15:51:11.728062Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:51:11.728062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0205070","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:51:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7/t0JbrQciLMdTeC3i8sJkPMYHy+7iyJqHROKfYa0VYbDHDpGCGMGvxHEsxu3WJO4ldpfNzi9n/soqflql2uBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:23:31.482533Z"},"content_sha256":"423fadb76b1775482d886e32abb3b3699d4736dc5865f76498053892d2b964b8","schema_version":"1.0","event_id":"sha256:423fadb76b1775482d886e32abb3b3699d4736dc5865f76498053892d2b964b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:MT3UECU2WZA7UTCWIRNW5C2J5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Dependence of Star Formation History and Internal Structure on Stellar Mass for 10^5 Low-Redshift Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Christy Tremonti, Don York, Eric W. Peng, Guinevere Kauffmann, Jon Brinkmann, Mark Seibert, Mark SubbaRao, Robert C. Nichol, Simon D.M. White, Stephane Charlot, Timothy M. Heckman","submitted_at":"2002-05-06T10:06:20Z","abstract_excerpt":"We study the relations between stellar mass, star formation history, size and internal structure for a complete sample of 122,808 galaxies drawn from the Sloan Digital Sky Survey. We show that low-redshift galaxies divide into two distinct families at a stellar mass of 3 \\times 10^10 M_sol. Lower mass galaxies have young stellar populations, low surface mass densities and the low concentrations typical of disks. A significant fraction of the lowest mass galaxies in our sample have experienced recent starbursts. At given stellar mass, the sizes of low mass galaxies are log- normally distributed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0205070","kind":"arxiv","version":2},"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/0205070/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":"2026-07-04T15:51:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LKUwvzpQtNHrQeGRxK+ez3hJnzOmig9l4ZGV7MP676Omuts+nZ5wIKp4jgZYOff7uIBhG/QCAJzn0FA186zODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:23:31.483103Z"},"content_sha256":"53530bc7edee9c29bf8c9942ce518b67a4034dd74066af85417e55ce126a7390","schema_version":"1.0","event_id":"sha256:53530bc7edee9c29bf8c9942ce518b67a4034dd74066af85417e55ce126a7390"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MT3UECU2WZA7UTCWIRNW5C2J5N/bundle.json","state_url":"https://pith.science/pith/MT3UECU2WZA7UTCWIRNW5C2J5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MT3UECU2WZA7UTCWIRNW5C2J5N/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":"2026-08-03T15:23:31Z","links":{"resolver":"https://pith.science/pith/MT3UECU2WZA7UTCWIRNW5C2J5N","bundle":"https://pith.science/pith/MT3UECU2WZA7UTCWIRNW5C2J5N/bundle.json","state":"https://pith.science/pith/MT3UECU2WZA7UTCWIRNW5C2J5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MT3UECU2WZA7UTCWIRNW5C2J5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:MT3UECU2WZA7UTCWIRNW5C2J5N","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":"56166a11088d7761c96e4c3c7e565903be79e99638ca178dc50041e04b2ea1f3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-06T10:06:20Z","title_canon_sha256":"c897a53ac0cc32e68ca4b5fd2b6d7c16bb057e8d79437804acdcbd9ce818ed55"},"schema_version":"1.0","source":{"id":"astro-ph/0205070","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0205070","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0205070v2","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0205070","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"pith_short_12","alias_value":"MT3UECU2WZA7","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"pith_short_16","alias_value":"MT3UECU2WZA7UTCW","created_at":"2026-07-04T15:51:11Z"},{"alias_kind":"pith_short_8","alias_value":"MT3UECU2","created_at":"2026-07-04T15:51:11Z"}],"graph_snapshots":[{"event_id":"sha256:53530bc7edee9c29bf8c9942ce518b67a4034dd74066af85417e55ce126a7390","target":"graph","created_at":"2026-07-04T15:51:11Z","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/0205070/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the relations between stellar mass, star formation history, size and internal structure for a complete sample of 122,808 galaxies drawn from the Sloan Digital Sky Survey. We show that low-redshift galaxies divide into two distinct families at a stellar mass of 3 \\times 10^10 M_sol. Lower mass galaxies have young stellar populations, low surface mass densities and the low concentrations typical of disks. A significant fraction of the lowest mass galaxies in our sample have experienced recent starbursts. At given stellar mass, the sizes of low mass galaxies are log- normally distributed","authors_text":"Christy Tremonti, Don York, Eric W. Peng, Guinevere Kauffmann, Jon Brinkmann, Mark Seibert, Mark SubbaRao, Robert C. Nichol, Simon D.M. White, Stephane Charlot, Timothy M. Heckman","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-05-06T10:06:20Z","title":"The Dependence of Star Formation History and Internal Structure on Stellar Mass for 10^5 Low-Redshift Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0205070","kind":"arxiv","version":2},"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":"sha256:423fadb76b1775482d886e32abb3b3699d4736dc5865f76498053892d2b964b8","target":"record","created_at":"2026-07-04T15:51:11Z","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":"56166a11088d7761c96e4c3c7e565903be79e99638ca178dc50041e04b2ea1f3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-06T10:06:20Z","title_canon_sha256":"c897a53ac0cc32e68ca4b5fd2b6d7c16bb057e8d79437804acdcbd9ce818ed55"},"schema_version":"1.0","source":{"id":"astro-ph/0205070","kind":"arxiv","version":2}},"canonical_sha256":"64f7420a9ab641fa4c56445b6e8b49eb577421747c1f7af23885127c156339c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64f7420a9ab641fa4c56445b6e8b49eb577421747c1f7af23885127c156339c2","first_computed_at":"2026-07-04T15:51:11.728062Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:51:11.728062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aTZ/oGxuDifqVtlZi+scEmpE5xWCxLcZGDH8zErMyiRgmz2G1Ac14sWNtnCuRJ62nvNS+pldzlxWfkrFZzwDBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:51:11.728597Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0205070","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:423fadb76b1775482d886e32abb3b3699d4736dc5865f76498053892d2b964b8","sha256:53530bc7edee9c29bf8c9942ce518b67a4034dd74066af85417e55ce126a7390"],"state_sha256":"64bee471819361f7c1e0ea1b772a32cdc5d375b3d88674df1b213adc5cd0f63b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bRY1pzsPhXe5YNdk9va2zN1OFsLvx3wnxmu4P8ivfXoAWVkVCqdyookGeBTIg2sW/vpBpeKHkcMm5x3n1rbNDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T15:23:31.491847Z","bundle_sha256":"c34c472afb6bc6e83d0f4a73d2345af1b4422e46c8d157a4adb560de14050cdf"}}