{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:AENTGZL2NE5ZD5JM6AYRT757YN","short_pith_number":"pith:AENTGZL2","canonical_record":{"source":{"id":"1811.05796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-14T14:14:06Z","cross_cats_sorted":[],"title_canon_sha256":"d0ab60374097f6dcd81509db55c6f2adfa48ec62a922fd74e6bc322c50abfd7e","abstract_canon_sha256":"7358360f9010780ebe4b01c5d1c2447c5f381c182639a4c5925f5ce5538fbff5"},"schema_version":"1.0"},"canonical_sha256":"011b33657a693b91f52cf03119ffbfc346e67e6b14b830518c16ed8fab0dd063","source":{"kind":"arxiv","id":"1811.05796","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.05796","created_at":"2026-05-17T23:52:39Z"},{"alias_kind":"arxiv_version","alias_value":"1811.05796v1","created_at":"2026-05-17T23:52:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.05796","created_at":"2026-05-17T23:52:39Z"},{"alias_kind":"pith_short_12","alias_value":"AENTGZL2NE5Z","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AENTGZL2NE5ZD5JM","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AENTGZL2","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:AENTGZL2NE5ZD5JM6AYRT757YN","target":"record","payload":{"canonical_record":{"source":{"id":"1811.05796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-14T14:14:06Z","cross_cats_sorted":[],"title_canon_sha256":"d0ab60374097f6dcd81509db55c6f2adfa48ec62a922fd74e6bc322c50abfd7e","abstract_canon_sha256":"7358360f9010780ebe4b01c5d1c2447c5f381c182639a4c5925f5ce5538fbff5"},"schema_version":"1.0"},"canonical_sha256":"011b33657a693b91f52cf03119ffbfc346e67e6b14b830518c16ed8fab0dd063","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:39.908133Z","signature_b64":"9ZRF0VrtQQKIzuKjgRD+exvABzehC6lp87s3nExRgVxkQxCq80ZqMMIJE95Oh0VRkrUHF0uLjwzv0UoGrgcbDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"011b33657a693b91f52cf03119ffbfc346e67e6b14b830518c16ed8fab0dd063","last_reissued_at":"2026-05-17T23:52:39.907466Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:39.907466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.05796","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:52:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FEJTSWRxCZvimgPF2e4W3V5SshOVE9BbKrLGnVmejUQ/PhAIFAE/iFueHv/tKmMeaGmYS9Px9KGy1N0WX80nAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:02:14.654576Z"},"content_sha256":"dbf9df16b796b10e245b40fed2b77c063c244f5e8184f7ca7ea4a36a0d013e65","schema_version":"1.0","event_id":"sha256:dbf9df16b796b10e245b40fed2b77c063c244f5e8184f7ca7ea4a36a0d013e65"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:AENTGZL2NE5ZD5JM6AYRT757YN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct T$_e$ metallicity calibration of R23 in strong line emitters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2, (2) LSSTC Data Science Fellow, 3), (3) University of Maryland, (4) NASA Goddard Space Flight Center, (5) Las Campanas Observatory, Chile), Huan Yang (5) ((1) Arizona State University, James E. Rhoads (4), Sangeeta Malhotra (4), Tianxing Jiang (1","submitted_at":"2018-11-14T14:14:06Z","abstract_excerpt":"The gas metallicity of galaxies is often estimated using strong emission lines such as the optical lines of [OIII] and [OII]. The most common measure is \"R23\", defined as ([OII]$\\lambda$$\\lambda$3726, 3729 + [OIII]$\\lambda$$\\lambda$4959,5007)/H$\\beta$. Most calibrations for these strong-line metallicity indicators are for continuum selected galaxies. We report a new empirical calibration of R23 for extreme emission-line galaxies using a large sample of about 800 star-forming green pea galaxies with reliable T$_e$-based gas-phase metallicity measurements. This sample is assembled from Sloan Dig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.05796","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":""},"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":"2026-05-17T23:52:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eCcgEE2ui7ncS991OmgRLNl+kjck0ARSAIjjXal+Ij+WE2HT8sjXQDb1YXIRhz4SyxYmID4QXQHEtY0RGM6UCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:02:14.655188Z"},"content_sha256":"bfc16f88bcdc72275c1514f3409ae4bc3797ce6adcb5d7418704891f9166ebd8","schema_version":"1.0","event_id":"sha256:bfc16f88bcdc72275c1514f3409ae4bc3797ce6adcb5d7418704891f9166ebd8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AENTGZL2NE5ZD5JM6AYRT757YN/bundle.json","state_url":"https://pith.science/pith/AENTGZL2NE5ZD5JM6AYRT757YN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AENTGZL2NE5ZD5JM6AYRT757YN/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":"2026-05-31T03:02:14Z","links":{"resolver":"https://pith.science/pith/AENTGZL2NE5ZD5JM6AYRT757YN","bundle":"https://pith.science/pith/AENTGZL2NE5ZD5JM6AYRT757YN/bundle.json","state":"https://pith.science/pith/AENTGZL2NE5ZD5JM6AYRT757YN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AENTGZL2NE5ZD5JM6AYRT757YN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:AENTGZL2NE5ZD5JM6AYRT757YN","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":"7358360f9010780ebe4b01c5d1c2447c5f381c182639a4c5925f5ce5538fbff5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-14T14:14:06Z","title_canon_sha256":"d0ab60374097f6dcd81509db55c6f2adfa48ec62a922fd74e6bc322c50abfd7e"},"schema_version":"1.0","source":{"id":"1811.05796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.05796","created_at":"2026-05-17T23:52:39Z"},{"alias_kind":"arxiv_version","alias_value":"1811.05796v1","created_at":"2026-05-17T23:52:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.05796","created_at":"2026-05-17T23:52:39Z"},{"alias_kind":"pith_short_12","alias_value":"AENTGZL2NE5Z","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AENTGZL2NE5ZD5JM","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AENTGZL2","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:bfc16f88bcdc72275c1514f3409ae4bc3797ce6adcb5d7418704891f9166ebd8","target":"graph","created_at":"2026-05-17T23:52:39Z","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":"The gas metallicity of galaxies is often estimated using strong emission lines such as the optical lines of [OIII] and [OII]. The most common measure is \"R23\", defined as ([OII]$\\lambda$$\\lambda$3726, 3729 + [OIII]$\\lambda$$\\lambda$4959,5007)/H$\\beta$. Most calibrations for these strong-line metallicity indicators are for continuum selected galaxies. We report a new empirical calibration of R23 for extreme emission-line galaxies using a large sample of about 800 star-forming green pea galaxies with reliable T$_e$-based gas-phase metallicity measurements. This sample is assembled from Sloan Dig","authors_text":"2, (2) LSSTC Data Science Fellow, 3), (3) University of Maryland, (4) NASA Goddard Space Flight Center, (5) Las Campanas Observatory, Chile), Huan Yang (5) ((1) Arizona State University, James E. Rhoads (4), Sangeeta Malhotra (4), Tianxing Jiang (1","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-14T14:14:06Z","title":"Direct T$_e$ metallicity calibration of R23 in strong line emitters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.05796","kind":"arxiv","version":1},"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:dbf9df16b796b10e245b40fed2b77c063c244f5e8184f7ca7ea4a36a0d013e65","target":"record","created_at":"2026-05-17T23:52:39Z","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":"7358360f9010780ebe4b01c5d1c2447c5f381c182639a4c5925f5ce5538fbff5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-14T14:14:06Z","title_canon_sha256":"d0ab60374097f6dcd81509db55c6f2adfa48ec62a922fd74e6bc322c50abfd7e"},"schema_version":"1.0","source":{"id":"1811.05796","kind":"arxiv","version":1}},"canonical_sha256":"011b33657a693b91f52cf03119ffbfc346e67e6b14b830518c16ed8fab0dd063","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"011b33657a693b91f52cf03119ffbfc346e67e6b14b830518c16ed8fab0dd063","first_computed_at":"2026-05-17T23:52:39.907466Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:39.907466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9ZRF0VrtQQKIzuKjgRD+exvABzehC6lp87s3nExRgVxkQxCq80ZqMMIJE95Oh0VRkrUHF0uLjwzv0UoGrgcbDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:39.908133Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.05796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dbf9df16b796b10e245b40fed2b77c063c244f5e8184f7ca7ea4a36a0d013e65","sha256:bfc16f88bcdc72275c1514f3409ae4bc3797ce6adcb5d7418704891f9166ebd8"],"state_sha256":"a2946c5b312012d9d7842a0d03e6a1768ecebfe39685328e35e3d79a5d4d8854"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FqI6C4Td5Ug4Xkz02cwGYf+057S95nS9u51o8s3lhB7feD34YFdGdLHvE6Bd1aYBxzNeKHrrGf76XMoALqUBBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:02:14.657813Z","bundle_sha256":"0cf18f8095e9bf7f23deb5cb5aca03b2c0ec6b9bdc74277dc0c27b7476ce6945"}}