{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:TZHBCNDXGLQO7GRBWY4AIIIXDU","short_pith_number":"pith:TZHBCNDX","schema_version":"1.0","canonical_sha256":"9e4e11347732e0ef9a21b6380421171d075f0b8761adcddc764006b2ebd66b11","source":{"kind":"arxiv","id":"1604.06799","version":2},"attestation_state":"computed","paper":{"title":"Directly Observing the Galaxies Likely Responsible for Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"J.M. Lotz, R.C. Livermore, S.L. Finkelstein","submitted_at":"2016-04-22T20:00:00Z","abstract_excerpt":"We report a new analysis of the Hubble Frontier Fields clusters Abell 2744 and MACS 0416 using wavelet decomposition to remove the cluster light, enabling the detection of highly magnified (>50x) galaxies a factor of 10x fainter in luminosity than previous studies. We find 167 galaxies at z > 6, and with this sample we are able to characterize the UV luminosity function to M_UV = -12.5 at z ~ 6, -14 at z ~ 7 and -15 at z ~ 8. We find a steep faint-end slope (alpha <-2), and with our improved statistics at the faint end we reduce the fractional uncertainty on alpha to <2% at z ~ 6 - 7 and 4% at"},"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":"1604.06799","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-22T20:00:00Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b5af3d263225eb401e3c4b9781fb2c52f1460e8bcf52241fbdf6c8c2c60bd11a","abstract_canon_sha256":"bb5a3aad808cefbcea2d0b4699e7c09d7f79096ba4b98f101c494d98291c7a83"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:09.761065Z","signature_b64":"FPiToZr1NQpxL5TgVPz3Q5GlnuXxeu5MsKi3eF6N91E8qFe3y5BrZZ4hNJt9/hgj6HoxF1/ZPD6wQLNTZ947DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e4e11347732e0ef9a21b6380421171d075f0b8761adcddc764006b2ebd66b11","last_reissued_at":"2026-05-18T00:16:09.760306Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:09.760306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Directly Observing the Galaxies Likely Responsible for Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"J.M. Lotz, R.C. Livermore, S.L. Finkelstein","submitted_at":"2016-04-22T20:00:00Z","abstract_excerpt":"We report a new analysis of the Hubble Frontier Fields clusters Abell 2744 and MACS 0416 using wavelet decomposition to remove the cluster light, enabling the detection of highly magnified (>50x) galaxies a factor of 10x fainter in luminosity than previous studies. We find 167 galaxies at z > 6, and with this sample we are able to characterize the UV luminosity function to M_UV = -12.5 at z ~ 6, -14 at z ~ 7 and -15 at z ~ 8. We find a steep faint-end slope (alpha <-2), and with our improved statistics at the faint end we reduce the fractional uncertainty on alpha to <2% at z ~ 6 - 7 and 4% at"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06799","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":""},"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":"1604.06799","created_at":"2026-05-18T00:16:09.760438+00:00"},{"alias_kind":"arxiv_version","alias_value":"1604.06799v2","created_at":"2026-05-18T00:16:09.760438+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06799","created_at":"2026-05-18T00:16:09.760438+00:00"},{"alias_kind":"pith_short_12","alias_value":"TZHBCNDXGLQO","created_at":"2026-05-18T12:30:46.583412+00:00"},{"alias_kind":"pith_short_16","alias_value":"TZHBCNDXGLQO7GRB","created_at":"2026-05-18T12:30:46.583412+00:00"},{"alias_kind":"pith_short_8","alias_value":"TZHBCNDX","created_at":"2026-05-18T12:30:46.583412+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/TZHBCNDXGLQO7GRBWY4AIIIXDU","json":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU.json","graph_json":"https://pith.science/api/pith-number/TZHBCNDXGLQO7GRBWY4AIIIXDU/graph.json","events_json":"https://pith.science/api/pith-number/TZHBCNDXGLQO7GRBWY4AIIIXDU/events.json","paper":"https://pith.science/paper/TZHBCNDX"},"agent_actions":{"view_html":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU","download_json":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU.json","view_paper":"https://pith.science/paper/TZHBCNDX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1604.06799&json=true","fetch_graph":"https://pith.science/api/pith-number/TZHBCNDXGLQO7GRBWY4AIIIXDU/graph.json","fetch_events":"https://pith.science/api/pith-number/TZHBCNDXGLQO7GRBWY4AIIIXDU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU/action/storage_attestation","attest_author":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU/action/author_attestation","sign_citation":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU/action/citation_signature","submit_replication":"https://pith.science/pith/TZHBCNDXGLQO7GRBWY4AIIIXDU/action/replication_record"}},"created_at":"2026-05-18T00:16:09.760438+00:00","updated_at":"2026-05-18T00:16:09.760438+00:00"}