{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:6VL3D7VMEZIPV5MNFD2OUPMMAP","short_pith_number":"pith:6VL3D7VM","schema_version":"1.0","canonical_sha256":"f557b1feac2650faf58d28f4ea3d8c03e5b908e0aae642f9d0b0e947ff03fcfa","source":{"kind":"arxiv","id":"astro-ph/0309265","version":1},"attestation_state":"computed","paper":{"title":"The Star Formation History of NGC 1705: a Post-Starburst Galaxy on the Verge of Activity","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) SISSA, 3), (3) Oss. di Padova, (4) Johns Hopkins University, (5) Space Telescope Science Institute, A. Aloisi (4), Baltimore, Baltimore), C. Leitherer (5) ((1) Oss. Astronomico di Bologna, F. Annibali (1, L. Greggio (1, M. Tosi (1)","submitted_at":"2003-09-09T10:35:18Z","abstract_excerpt":"We infer the star formation history in different regions of the blue compact dwarf NGC 1705 by comparing synthetic color-magnitude diagrams with HST optical and near-infrared photometry. We find that NGC 1705 is not a young galaxy because its star formation commenced at least 5 Gyr ago. On the other hand, we confirm the existence of a recent burst of star formation between 15 and 10 Myr ago. We also find evidence for new strong activity, which started 3 Myr ago and is still continuing. The old population is spread across the entire galaxy, while the young and intermediate stars are more concen"},"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":"astro-ph/0309265","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-09-09T10:35:18Z","cross_cats_sorted":[],"title_canon_sha256":"fdef095e1195389066ce87f8a36b47fffb3cbc2539506c6d0d9de014802d39d5","abstract_canon_sha256":"14d2453654dd951322208bb41aa84730c9a2d786897b9fdc2e65b57c0fc42581"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:37:27.007023Z","signature_b64":"oMPCLsQjf2M/V//Gp1bpmwS5eMtAbJOa/iEYNU3GnhFAp2GQsqG9tCS/nxvB7cziPnXMi/iM5bA7QOuB4UFcDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f557b1feac2650faf58d28f4ea3d8c03e5b908e0aae642f9d0b0e947ff03fcfa","last_reissued_at":"2026-07-04T16:37:27.006607Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:37:27.006607Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Star Formation History of NGC 1705: a Post-Starburst Galaxy on the Verge of Activity","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) SISSA, 3), (3) Oss. di Padova, (4) Johns Hopkins University, (5) Space Telescope Science Institute, A. Aloisi (4), Baltimore, Baltimore), C. Leitherer (5) ((1) Oss. Astronomico di Bologna, F. Annibali (1, L. Greggio (1, M. Tosi (1)","submitted_at":"2003-09-09T10:35:18Z","abstract_excerpt":"We infer the star formation history in different regions of the blue compact dwarf NGC 1705 by comparing synthetic color-magnitude diagrams with HST optical and near-infrared photometry. We find that NGC 1705 is not a young galaxy because its star formation commenced at least 5 Gyr ago. On the other hand, we confirm the existence of a recent burst of star formation between 15 and 10 Myr ago. We also find evidence for new strong activity, which started 3 Myr ago and is still continuing. The old population is spread across the entire galaxy, while the young and intermediate stars are more concen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0309265","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/0309265/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0309265","created_at":"2026-07-04T16:37:27.006667+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0309265v1","created_at":"2026-07-04T16:37:27.006667+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0309265","created_at":"2026-07-04T16:37:27.006667+00:00"},{"alias_kind":"pith_short_12","alias_value":"6VL3D7VMEZIP","created_at":"2026-07-04T16:37:27.006667+00:00"},{"alias_kind":"pith_short_16","alias_value":"6VL3D7VMEZIPV5MN","created_at":"2026-07-04T16:37:27.006667+00:00"},{"alias_kind":"pith_short_8","alias_value":"6VL3D7VM","created_at":"2026-07-04T16:37:27.006667+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/6VL3D7VMEZIPV5MNFD2OUPMMAP","json":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP.json","graph_json":"https://pith.science/api/pith-number/6VL3D7VMEZIPV5MNFD2OUPMMAP/graph.json","events_json":"https://pith.science/api/pith-number/6VL3D7VMEZIPV5MNFD2OUPMMAP/events.json","paper":"https://pith.science/paper/6VL3D7VM"},"agent_actions":{"view_html":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP","download_json":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP.json","view_paper":"https://pith.science/paper/6VL3D7VM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0309265&json=true","fetch_graph":"https://pith.science/api/pith-number/6VL3D7VMEZIPV5MNFD2OUPMMAP/graph.json","fetch_events":"https://pith.science/api/pith-number/6VL3D7VMEZIPV5MNFD2OUPMMAP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP/action/storage_attestation","attest_author":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP/action/author_attestation","sign_citation":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP/action/citation_signature","submit_replication":"https://pith.science/pith/6VL3D7VMEZIPV5MNFD2OUPMMAP/action/replication_record"}},"created_at":"2026-07-04T16:37:27.006667+00:00","updated_at":"2026-07-04T16:37:27.006667+00:00"}