{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:DHLUC7XSQFHTJSITCHB3AIG7I7","short_pith_number":"pith:DHLUC7XS","canonical_record":{"source":{"id":"1105.2038","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-10T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"002dbeb814af4b8d2741f30f54f3b0f2402705cb13855f69fac5c40b19287604","abstract_canon_sha256":"5afbff21e83ffb3813adb07e69c9d93781206fb2b5a0f1a30d16e39814f7b4dc"},"schema_version":"1.0"},"canonical_sha256":"19d7417ef2814f34c91311c3b020df47f9bb1647fb772b31c0eeca478f773f5c","source":{"kind":"arxiv","id":"1105.2038","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.2038","created_at":"2026-05-18T02:02:01Z"},{"alias_kind":"arxiv_version","alias_value":"1105.2038v4","created_at":"2026-05-18T02:02:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.2038","created_at":"2026-05-18T02:02:01Z"},{"alias_kind":"pith_short_12","alias_value":"DHLUC7XSQFHT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DHLUC7XSQFHTJSIT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DHLUC7XS","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:DHLUC7XSQFHTJSITCHB3AIG7I7","target":"record","payload":{"canonical_record":{"source":{"id":"1105.2038","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-10T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"002dbeb814af4b8d2741f30f54f3b0f2402705cb13855f69fac5c40b19287604","abstract_canon_sha256":"5afbff21e83ffb3813adb07e69c9d93781206fb2b5a0f1a30d16e39814f7b4dc"},"schema_version":"1.0"},"canonical_sha256":"19d7417ef2814f34c91311c3b020df47f9bb1647fb772b31c0eeca478f773f5c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:01.699011Z","signature_b64":"9nO9w9wvC6R9ImbeWUdzyBoFy7S32a4yXWXRBfR18KJjlZ4T4sgo5QyvAcABJD8wOYQrpbHLuR39rLN4VHN+CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19d7417ef2814f34c91311c3b020df47f9bb1647fb772b31c0eeca478f773f5c","last_reissued_at":"2026-05-18T02:02:01.698368Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:01.698368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.2038","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:02:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OkB5GMY/GgqENk80pub1BVdati/0PRBIPyTFCZbPl5/Nx1mfMO4fmWweiNmr9t9JT48l+wwkYFL3P0rhIu0SCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:47:38.929428Z"},"content_sha256":"cd36b343ddb5f49894d1a6164c01368977cf1ded10dae57d230ac65c54de7a32","schema_version":"1.0","event_id":"sha256:cd36b343ddb5f49894d1a6164c01368977cf1ded10dae57d230ac65c54de7a32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:DHLUC7XSQFHTJSITCHB3AIG7I7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lower-Luminosity Galaxies could reionize the Universe: Very Steep Faint-End Slopes to the UV Luminosity Functions at z>=5-8 from the HUDF09 WFC3/IR Observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"C. M. Carollo (ETH Zurich), D. Magee (UCSC), G. D. Illingworth (UCSC), I. Labbe (Leiden), M. Franx (Leiden), M. Stiavelli (STScI), M. Trenti (Colorado), P. A. Oesch (UCSC), P. van Dokkum (Yale), R. J. Bouwens (Leiden)","submitted_at":"2011-05-10T20:00:03Z","abstract_excerpt":"The HUDF09 data are the deepest near-IR observations ever, reaching to 29.5 mag. Luminosity functions (LF) from these new HUDF09 data for 132 z\\sim7 and z\\sim8 galaxies are combined with new LFs for z\\sim5-6 galaxies and the earlier z\\sim4 LF to reach to very faint limits (<0.05 L*(z=3)). The faint-end slopes alpha are steep: -1.79+/-0.12 (z\\sim5), -1.73+/-0.20 (z\\sim6), -2.01+/-0.21 (z\\sim7), and -1.91+/-0.32 (z\\sim8). Slopes alpha\\lesssim-2 lead to formally divergent UV fluxes, though galaxies are not expected to form below \\sim-10 AB mag. These results have important implications for reioni"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.2038","kind":"arxiv","version":4},"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":"2026-05-18T02:02:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"py53+7neyJ7wq8yWz0WgmYSibHJPD6898rXeXYJ7+wrRvBHZUP+lBSmeuikYqAHwY1YAwy+2ZgIQZRWhNb5ACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:47:38.930108Z"},"content_sha256":"5feb66226cc858b6af261782fd11ccc11ee92f4e9b6c36d79c2924ff204aac21","schema_version":"1.0","event_id":"sha256:5feb66226cc858b6af261782fd11ccc11ee92f4e9b6c36d79c2924ff204aac21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DHLUC7XSQFHTJSITCHB3AIG7I7/bundle.json","state_url":"https://pith.science/pith/DHLUC7XSQFHTJSITCHB3AIG7I7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DHLUC7XSQFHTJSITCHB3AIG7I7/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":"2026-05-26T02:47:38Z","links":{"resolver":"https://pith.science/pith/DHLUC7XSQFHTJSITCHB3AIG7I7","bundle":"https://pith.science/pith/DHLUC7XSQFHTJSITCHB3AIG7I7/bundle.json","state":"https://pith.science/pith/DHLUC7XSQFHTJSITCHB3AIG7I7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DHLUC7XSQFHTJSITCHB3AIG7I7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:DHLUC7XSQFHTJSITCHB3AIG7I7","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":"5afbff21e83ffb3813adb07e69c9d93781206fb2b5a0f1a30d16e39814f7b4dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-10T20:00:03Z","title_canon_sha256":"002dbeb814af4b8d2741f30f54f3b0f2402705cb13855f69fac5c40b19287604"},"schema_version":"1.0","source":{"id":"1105.2038","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.2038","created_at":"2026-05-18T02:02:01Z"},{"alias_kind":"arxiv_version","alias_value":"1105.2038v4","created_at":"2026-05-18T02:02:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.2038","created_at":"2026-05-18T02:02:01Z"},{"alias_kind":"pith_short_12","alias_value":"DHLUC7XSQFHT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DHLUC7XSQFHTJSIT","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DHLUC7XS","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:5feb66226cc858b6af261782fd11ccc11ee92f4e9b6c36d79c2924ff204aac21","target":"graph","created_at":"2026-05-18T02:02:01Z","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":"The HUDF09 data are the deepest near-IR observations ever, reaching to 29.5 mag. Luminosity functions (LF) from these new HUDF09 data for 132 z\\sim7 and z\\sim8 galaxies are combined with new LFs for z\\sim5-6 galaxies and the earlier z\\sim4 LF to reach to very faint limits (<0.05 L*(z=3)). The faint-end slopes alpha are steep: -1.79+/-0.12 (z\\sim5), -1.73+/-0.20 (z\\sim6), -2.01+/-0.21 (z\\sim7), and -1.91+/-0.32 (z\\sim8). Slopes alpha\\lesssim-2 lead to formally divergent UV fluxes, though galaxies are not expected to form below \\sim-10 AB mag. These results have important implications for reioni","authors_text":"C. M. Carollo (ETH Zurich), D. Magee (UCSC), G. D. Illingworth (UCSC), I. Labbe (Leiden), M. Franx (Leiden), M. Stiavelli (STScI), M. Trenti (Colorado), P. A. Oesch (UCSC), P. van Dokkum (Yale), R. J. Bouwens (Leiden)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-10T20:00:03Z","title":"Lower-Luminosity Galaxies could reionize the Universe: Very Steep Faint-End Slopes to the UV Luminosity Functions at z>=5-8 from the HUDF09 WFC3/IR Observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.2038","kind":"arxiv","version":4},"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:cd36b343ddb5f49894d1a6164c01368977cf1ded10dae57d230ac65c54de7a32","target":"record","created_at":"2026-05-18T02:02:01Z","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":"5afbff21e83ffb3813adb07e69c9d93781206fb2b5a0f1a30d16e39814f7b4dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-10T20:00:03Z","title_canon_sha256":"002dbeb814af4b8d2741f30f54f3b0f2402705cb13855f69fac5c40b19287604"},"schema_version":"1.0","source":{"id":"1105.2038","kind":"arxiv","version":4}},"canonical_sha256":"19d7417ef2814f34c91311c3b020df47f9bb1647fb772b31c0eeca478f773f5c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19d7417ef2814f34c91311c3b020df47f9bb1647fb772b31c0eeca478f773f5c","first_computed_at":"2026-05-18T02:02:01.698368Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:01.698368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9nO9w9wvC6R9ImbeWUdzyBoFy7S32a4yXWXRBfR18KJjlZ4T4sgo5QyvAcABJD8wOYQrpbHLuR39rLN4VHN+CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:01.699011Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.2038","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd36b343ddb5f49894d1a6164c01368977cf1ded10dae57d230ac65c54de7a32","sha256:5feb66226cc858b6af261782fd11ccc11ee92f4e9b6c36d79c2924ff204aac21"],"state_sha256":"64abbdf302f6ca5abba368b0ff9c7c6e0d5e3bf3e17b012d350d78f011d43f60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6fy4F3dkVY5cBMooXpyJzabYlhq5iT0iL0zCur1M2Uux2/EUkCTvrRTBfaBtVldtcOKKfPvEagfVlz6mDu/jBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T02:47:38.934363Z","bundle_sha256":"45c734684b2a3a6a97189e3e555a7518c837892afb87b560ad7680c90e7e86b4"}}