{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PK6BWTRB2OVS4LQFWSLVJYQ5CJ","short_pith_number":"pith:PK6BWTRB","canonical_record":{"source":{"id":"1101.3017","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-15T19:04:52Z","cross_cats_sorted":[],"title_canon_sha256":"194d73dd0f3230526605460e8c13cef4b91ae5a3d6888d06dd70b606a65a4a2e","abstract_canon_sha256":"e4d8002f4c1320e3af86f739388b9fd85e6647d31ed9e0cc589f038bf596f01f"},"schema_version":"1.0"},"canonical_sha256":"7abc1b4e21d3ab2e2e05b49754e21d125de469c7dfb8f4369e62a7df8af14b1d","source":{"kind":"arxiv","id":"1101.3017","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3017","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3017v2","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3017","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"pith_short_12","alias_value":"PK6BWTRB2OVS","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PK6BWTRB2OVS4LQF","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PK6BWTRB","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PK6BWTRB2OVS4LQFWSLVJYQ5CJ","target":"record","payload":{"canonical_record":{"source":{"id":"1101.3017","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-15T19:04:52Z","cross_cats_sorted":[],"title_canon_sha256":"194d73dd0f3230526605460e8c13cef4b91ae5a3d6888d06dd70b606a65a4a2e","abstract_canon_sha256":"e4d8002f4c1320e3af86f739388b9fd85e6647d31ed9e0cc589f038bf596f01f"},"schema_version":"1.0"},"canonical_sha256":"7abc1b4e21d3ab2e2e05b49754e21d125de469c7dfb8f4369e62a7df8af14b1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:39.607641Z","signature_b64":"4lhSGjQ9DJlzFO8dBEkLadrLsIi+xGabsjpKBhi8imOnd0YslK63y5DZiN0DmX7Snx29wOYM6qvigsqswtFwCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7abc1b4e21d3ab2e2e05b49754e21d125de469c7dfb8f4369e62a7df8af14b1d","last_reissued_at":"2026-05-18T02:03:39.607083Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:39.607083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.3017","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":"2026-05-18T02:03:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y4d8oGxRq0DAuwCY6/kRJWk2UQQ48fb0ggcKL6kkWeDLYlZEc8/P5e34zVu8szbhi5qJwy3Jqib5QbJQKjs8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:38:19.344486Z"},"content_sha256":"cbbd3d60fd9794918cde47314bee4de199d63bca400454ba0c3b039bc3b04e61","schema_version":"1.0","event_id":"sha256:cbbd3d60fd9794918cde47314bee4de199d63bca400454ba0c3b039bc3b04e61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PK6BWTRB2OVS4LQFWSLVJYQ5CJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ly-alpha Emitting Galaxies at z = 2.1: Stellar Masses, Dust and Star Formation Histories from Spectral Energy Distribution Fitting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Caryl Gronwall, Eric Gawiser, Ezequiel Treister, Kevin Schawinski, Lucia Guaita, Nelson Padilla, Nicholas Bond, Paulina Lira, Peter Kurczynski, Robin Ciardullo, Viviana Acquaviva","submitted_at":"2011-01-15T19:04:52Z","abstract_excerpt":"We study the physical properties of 216 z ~ 2.1 LAEs discovered in an ultra-deep narrow-band MUSYC image of the ECDF-S. We fit their stacked Spectral Energy Distribution (SED) using Charlot & Bruzual templates. We consider star formation histories parametrized by the e-folding time parameter tau, allowing for exponentially decreasing (tau>0), exponentially increasing (tau<0), and constant star formation rates. These LAEs are characterized by best fit parameters and 68% confidence intervals of log(M_*/M_sun)=8.6[8.4-9.1], E(B-V)=0.22[0.00-0.31], tau=-0.02[(-4)-18] Gyr, and age_ SF=0.018[0.009-3"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3017","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:03:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g1qRflptjkJfnW20H3W9AcBncze+HsTvTH7c68YwY/RGgzt8HskS7AzClDyG/eLPQitn8jpw/BaGGRErY0SaCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:38:19.344869Z"},"content_sha256":"4806b09b304f10bddcf7f2d778e2c261ce0fb916f181bbdaa313f6e45710b962","schema_version":"1.0","event_id":"sha256:4806b09b304f10bddcf7f2d778e2c261ce0fb916f181bbdaa313f6e45710b962"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ/bundle.json","state_url":"https://pith.science/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ/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":"2026-06-01T04:38:19Z","links":{"resolver":"https://pith.science/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ","bundle":"https://pith.science/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ/bundle.json","state":"https://pith.science/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PK6BWTRB2OVS4LQFWSLVJYQ5CJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PK6BWTRB2OVS4LQFWSLVJYQ5CJ","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":"e4d8002f4c1320e3af86f739388b9fd85e6647d31ed9e0cc589f038bf596f01f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-15T19:04:52Z","title_canon_sha256":"194d73dd0f3230526605460e8c13cef4b91ae5a3d6888d06dd70b606a65a4a2e"},"schema_version":"1.0","source":{"id":"1101.3017","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3017","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3017v2","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3017","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"pith_short_12","alias_value":"PK6BWTRB2OVS","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PK6BWTRB2OVS4LQF","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PK6BWTRB","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:4806b09b304f10bddcf7f2d778e2c261ce0fb916f181bbdaa313f6e45710b962","target":"graph","created_at":"2026-05-18T02:03:39Z","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":"We study the physical properties of 216 z ~ 2.1 LAEs discovered in an ultra-deep narrow-band MUSYC image of the ECDF-S. We fit their stacked Spectral Energy Distribution (SED) using Charlot & Bruzual templates. We consider star formation histories parametrized by the e-folding time parameter tau, allowing for exponentially decreasing (tau>0), exponentially increasing (tau<0), and constant star formation rates. These LAEs are characterized by best fit parameters and 68% confidence intervals of log(M_*/M_sun)=8.6[8.4-9.1], E(B-V)=0.22[0.00-0.31], tau=-0.02[(-4)-18] Gyr, and age_ SF=0.018[0.009-3","authors_text":"Caryl Gronwall, Eric Gawiser, Ezequiel Treister, Kevin Schawinski, Lucia Guaita, Nelson Padilla, Nicholas Bond, Paulina Lira, Peter Kurczynski, Robin Ciardullo, Viviana Acquaviva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-15T19:04:52Z","title":"Ly-alpha Emitting Galaxies at z = 2.1: Stellar Masses, Dust and Star Formation Histories from Spectral Energy Distribution Fitting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3017","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:cbbd3d60fd9794918cde47314bee4de199d63bca400454ba0c3b039bc3b04e61","target":"record","created_at":"2026-05-18T02:03:39Z","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":"e4d8002f4c1320e3af86f739388b9fd85e6647d31ed9e0cc589f038bf596f01f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-15T19:04:52Z","title_canon_sha256":"194d73dd0f3230526605460e8c13cef4b91ae5a3d6888d06dd70b606a65a4a2e"},"schema_version":"1.0","source":{"id":"1101.3017","kind":"arxiv","version":2}},"canonical_sha256":"7abc1b4e21d3ab2e2e05b49754e21d125de469c7dfb8f4369e62a7df8af14b1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7abc1b4e21d3ab2e2e05b49754e21d125de469c7dfb8f4369e62a7df8af14b1d","first_computed_at":"2026-05-18T02:03:39.607083Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:39.607083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4lhSGjQ9DJlzFO8dBEkLadrLsIi+xGabsjpKBhi8imOnd0YslK63y5DZiN0DmX7Snx29wOYM6qvigsqswtFwCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:39.607641Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.3017","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbbd3d60fd9794918cde47314bee4de199d63bca400454ba0c3b039bc3b04e61","sha256:4806b09b304f10bddcf7f2d778e2c261ce0fb916f181bbdaa313f6e45710b962"],"state_sha256":"34658094ec95920b30b3d9df0ce3018dfba0f29cecda3c08de875926aa87a573"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bvpZVCJvTaQBo3bbi7tOYsUK/2yZrIsCGoU05lCcbrDx+rJbZd6VNsLKcIb5GOflOLYn0UcGHcj54w4DkktTCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:38:19.347516Z","bundle_sha256":"786249ae48700757501a22d5036e4ccbe631590cf0a3d83cabfb868e6c6eddfa"}}