{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ARA2KPML4TJUWZ3M2JI2R2T3R3","short_pith_number":"pith:ARA2KPML","canonical_record":{"source":{"id":"1901.06391","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-18T19:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"9ae97a0d4c029994b0d35b8f540c0cafb4bb4e6b6309063c6c728a0a0f5d10fb","abstract_canon_sha256":"353b902dc1529cc3f3922bc76ccb821edcfa13a6e18872a6ec6bcfc6e919a41a"},"schema_version":"1.0"},"canonical_sha256":"0441a53d8be4d34b676cd251a8ea7b8ed3dd52cee12260cdc3f6ba94cb444dea","source":{"kind":"arxiv","id":"1901.06391","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06391","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06391v1","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06391","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"pith_short_12","alias_value":"ARA2KPML4TJU","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"ARA2KPML4TJUWZ3M","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"ARA2KPML","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ARA2KPML4TJUWZ3M2JI2R2T3R3","target":"record","payload":{"canonical_record":{"source":{"id":"1901.06391","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-18T19:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"9ae97a0d4c029994b0d35b8f540c0cafb4bb4e6b6309063c6c728a0a0f5d10fb","abstract_canon_sha256":"353b902dc1529cc3f3922bc76ccb821edcfa13a6e18872a6ec6bcfc6e919a41a"},"schema_version":"1.0"},"canonical_sha256":"0441a53d8be4d34b676cd251a8ea7b8ed3dd52cee12260cdc3f6ba94cb444dea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:38.393556Z","signature_b64":"5lQya3MSHNDu/YY0XFkw2IF0tTcsEuWjcvlbIcVJZboJ2E1ThvJ10rm9BV9jGicXhZrCE+ME5aPHMNVtP8jPCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0441a53d8be4d34b676cd251a8ea7b8ed3dd52cee12260cdc3f6ba94cb444dea","last_reissued_at":"2026-05-17T23:52:38.392848Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:38.392848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.06391","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":"2026-05-17T23:52:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z1zhxSHHaR0symmx17aQZG42SrKDJgOBIS20WbqV+4FwRpAXy78dABktQ0CmlFehvpOY1mbNKl6Ee+QXsUspAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T01:10:17.720872Z"},"content_sha256":"795b3ba1ac7df88241d33f487118d0dac699d8be5aba70c132606e9d26d78f5e","schema_version":"1.0","event_id":"sha256:795b3ba1ac7df88241d33f487118d0dac699d8be5aba70c132606e9d26d78f5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ARA2KPML4TJUWZ3M2JI2R2T3R3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Imprint of Element Abundance Patterns on Quiescent Galaxy SEDs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Benjamin D. Johnson, Charlie Conroy, Jieun Choi","submitted_at":"2019-01-18T19:00:03Z","abstract_excerpt":"Stellar population synthesis (SPS) models have long struggled to reproduce observed optical through near-IR (NIR) spectral energy distributions (SED) of massive quiescent galaxies. We revisit this issue using a novel approach that combines the diagnostic power of full-spectrum fitting with recently updated stellar spectral libraries. First, we perform full-spectrum fitting of continuum-normalized stacked SDSS spectra in bins of velocity dispersion to infer their stellar population properties, such as the elemental abundances and age. Next, we use the resulting best-fit parameters to compute $u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06391","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":"2026-05-17T23:52:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q3SqaPF3ZAEOzwMxArUZU/UbdNNhDd91OTnNKkIfkcotDPekxn3vSmnpLCMy9vRafavUUWylskAilHZJMUxDBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T01:10:17.721579Z"},"content_sha256":"ba13e52a7aab6ccfe8e2525c7a66b1b853447a35f498789f02dfa5c320cf5025","schema_version":"1.0","event_id":"sha256:ba13e52a7aab6ccfe8e2525c7a66b1b853447a35f498789f02dfa5c320cf5025"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3/bundle.json","state_url":"https://pith.science/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3/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":"2026-06-10T01:10:17Z","links":{"resolver":"https://pith.science/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3","bundle":"https://pith.science/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3/bundle.json","state":"https://pith.science/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ARA2KPML4TJUWZ3M2JI2R2T3R3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ARA2KPML4TJUWZ3M2JI2R2T3R3","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":"353b902dc1529cc3f3922bc76ccb821edcfa13a6e18872a6ec6bcfc6e919a41a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-18T19:00:03Z","title_canon_sha256":"9ae97a0d4c029994b0d35b8f540c0cafb4bb4e6b6309063c6c728a0a0f5d10fb"},"schema_version":"1.0","source":{"id":"1901.06391","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.06391","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"arxiv_version","alias_value":"1901.06391v1","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.06391","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"pith_short_12","alias_value":"ARA2KPML4TJU","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"ARA2KPML4TJUWZ3M","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"ARA2KPML","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:ba13e52a7aab6ccfe8e2525c7a66b1b853447a35f498789f02dfa5c320cf5025","target":"graph","created_at":"2026-05-17T23:52:38Z","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":"Stellar population synthesis (SPS) models have long struggled to reproduce observed optical through near-IR (NIR) spectral energy distributions (SED) of massive quiescent galaxies. We revisit this issue using a novel approach that combines the diagnostic power of full-spectrum fitting with recently updated stellar spectral libraries. First, we perform full-spectrum fitting of continuum-normalized stacked SDSS spectra in bins of velocity dispersion to infer their stellar population properties, such as the elemental abundances and age. Next, we use the resulting best-fit parameters to compute $u","authors_text":"Benjamin D. Johnson, Charlie Conroy, Jieun Choi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-18T19:00:03Z","title":"The Imprint of Element Abundance Patterns on Quiescent Galaxy SEDs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.06391","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":"sha256:795b3ba1ac7df88241d33f487118d0dac699d8be5aba70c132606e9d26d78f5e","target":"record","created_at":"2026-05-17T23:52:38Z","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":"353b902dc1529cc3f3922bc76ccb821edcfa13a6e18872a6ec6bcfc6e919a41a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-18T19:00:03Z","title_canon_sha256":"9ae97a0d4c029994b0d35b8f540c0cafb4bb4e6b6309063c6c728a0a0f5d10fb"},"schema_version":"1.0","source":{"id":"1901.06391","kind":"arxiv","version":1}},"canonical_sha256":"0441a53d8be4d34b676cd251a8ea7b8ed3dd52cee12260cdc3f6ba94cb444dea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0441a53d8be4d34b676cd251a8ea7b8ed3dd52cee12260cdc3f6ba94cb444dea","first_computed_at":"2026-05-17T23:52:38.392848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:38.392848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5lQya3MSHNDu/YY0XFkw2IF0tTcsEuWjcvlbIcVJZboJ2E1ThvJ10rm9BV9jGicXhZrCE+ME5aPHMNVtP8jPCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:38.393556Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.06391","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:795b3ba1ac7df88241d33f487118d0dac699d8be5aba70c132606e9d26d78f5e","sha256:ba13e52a7aab6ccfe8e2525c7a66b1b853447a35f498789f02dfa5c320cf5025"],"state_sha256":"341f79a0811d50d8eae520a5a9d730063cfd3b32421a29861f528d46afb7c130"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"croY923VjV7dzv9hru7+mDiA4+qL2VU5E3jiW9NRl06PwIxBCCbBQNnFmvYeBoxuzhkAYH1+aRr/YsmQasFSBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T01:10:17.725442Z","bundle_sha256":"f89584fe3f21a035e08e18004fcb4e1d8f6b66af041144cfc8fb5704ba9689d7"}}