{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GOGFT7K3Y7L57JQKINEPC6EQKG","short_pith_number":"pith:GOGFT7K3","canonical_record":{"source":{"id":"1807.03416","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-09T22:59:12Z","cross_cats_sorted":[],"title_canon_sha256":"cb023a06699fe7f053a93a78e9eb063f181fe32cc0d31419bbb1961b78aaf8bf","abstract_canon_sha256":"0dd40ae9e8c5e8095ec2ce1318be5fe37653a34f34ebb2bef1604aa8dc1a8828"},"schema_version":"1.0"},"canonical_sha256":"338c59fd5bc7d7dfa60a4348f17890518cefddfcd6ce40697ca93acac883bd5a","source":{"kind":"arxiv","id":"1807.03416","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03416","created_at":"2026-05-18T00:09:10Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03416v1","created_at":"2026-05-18T00:09:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03416","created_at":"2026-05-18T00:09:10Z"},{"alias_kind":"pith_short_12","alias_value":"GOGFT7K3Y7L5","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GOGFT7K3Y7L57JQK","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GOGFT7K3","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GOGFT7K3Y7L57JQKINEPC6EQKG","target":"record","payload":{"canonical_record":{"source":{"id":"1807.03416","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-09T22:59:12Z","cross_cats_sorted":[],"title_canon_sha256":"cb023a06699fe7f053a93a78e9eb063f181fe32cc0d31419bbb1961b78aaf8bf","abstract_canon_sha256":"0dd40ae9e8c5e8095ec2ce1318be5fe37653a34f34ebb2bef1604aa8dc1a8828"},"schema_version":"1.0"},"canonical_sha256":"338c59fd5bc7d7dfa60a4348f17890518cefddfcd6ce40697ca93acac883bd5a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:10.914979Z","signature_b64":"P9+XNDkvG6w90AwRUgoDml5JWG8JJsnCpQWN9jM6XTID5U1wb4W8k+1yOAFPPcIK7g8Zff3D8tg8qOgQKCUkCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"338c59fd5bc7d7dfa60a4348f17890518cefddfcd6ce40697ca93acac883bd5a","last_reissued_at":"2026-05-18T00:09:10.914299Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:10.914299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.03416","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":"2026-05-18T00:09:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B6yrMQepOOQN6E7ubRbbur71j+UhD/eiqijQj0z6VjL/4GnaLdW11/MX/1xwFoisvSG2DaRNNqSGUGQHFm+qBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:50:33.956166Z"},"content_sha256":"df96f8449147aefc99af4025511ee7a878f609030d3660e0833574080cec42cb","schema_version":"1.0","event_id":"sha256:df96f8449147aefc99af4025511ee7a878f609030d3660e0833574080cec42cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GOGFT7K3Y7L57JQKINEPC6EQKG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the [$\\alpha$/Fe]-[Fe/H] relations in early-type galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Chiaki Kobayashi, Fiorenzo Vincenzo, Philip Taylor","submitted_at":"2018-07-09T22:59:12Z","abstract_excerpt":"We study how the predicted [$\\alpha$/Fe]-[Fe/H] relations in early-type galaxies vary as functions of their stellar masses, ages and stellar velocity dispersions, by making use of cosmological chemodynamical simulations with feedback from active galactic nuclei. Our model includes a detailed treatment for the chemical enrichment from dying stars, core-collapse supernovae (both Type II and hypernovae) and Type Ia supernovae. At redshift $z=0$, we create a catalogue of $526$ galaxies, among which we determine $80$ early-type galaxies. From the analysis of our simulations, we find [$\\alpha$/Fe]-["},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03416","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":"2026-05-18T00:09:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JA92ylh6Y0cLBIq91P/d4rilg8cfMPZtQzmnvZPUNSmwh4WFvbswFp1iWlqPNW805e8f6Jt+j4O54TLmTz9oDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:50:33.956524Z"},"content_sha256":"e5822cbfbd733bb0c61f9b39be559fb976a2165cff09bd326f357e86ad63c3c1","schema_version":"1.0","event_id":"sha256:e5822cbfbd733bb0c61f9b39be559fb976a2165cff09bd326f357e86ad63c3c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GOGFT7K3Y7L57JQKINEPC6EQKG/bundle.json","state_url":"https://pith.science/pith/GOGFT7K3Y7L57JQKINEPC6EQKG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GOGFT7K3Y7L57JQKINEPC6EQKG/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":"2026-05-28T12:50:33Z","links":{"resolver":"https://pith.science/pith/GOGFT7K3Y7L57JQKINEPC6EQKG","bundle":"https://pith.science/pith/GOGFT7K3Y7L57JQKINEPC6EQKG/bundle.json","state":"https://pith.science/pith/GOGFT7K3Y7L57JQKINEPC6EQKG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GOGFT7K3Y7L57JQKINEPC6EQKG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GOGFT7K3Y7L57JQKINEPC6EQKG","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":"0dd40ae9e8c5e8095ec2ce1318be5fe37653a34f34ebb2bef1604aa8dc1a8828","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-09T22:59:12Z","title_canon_sha256":"cb023a06699fe7f053a93a78e9eb063f181fe32cc0d31419bbb1961b78aaf8bf"},"schema_version":"1.0","source":{"id":"1807.03416","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03416","created_at":"2026-05-18T00:09:10Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03416v1","created_at":"2026-05-18T00:09:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03416","created_at":"2026-05-18T00:09:10Z"},{"alias_kind":"pith_short_12","alias_value":"GOGFT7K3Y7L5","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GOGFT7K3Y7L57JQK","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GOGFT7K3","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:e5822cbfbd733bb0c61f9b39be559fb976a2165cff09bd326f357e86ad63c3c1","target":"graph","created_at":"2026-05-18T00:09:10Z","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 how the predicted [$\\alpha$/Fe]-[Fe/H] relations in early-type galaxies vary as functions of their stellar masses, ages and stellar velocity dispersions, by making use of cosmological chemodynamical simulations with feedback from active galactic nuclei. Our model includes a detailed treatment for the chemical enrichment from dying stars, core-collapse supernovae (both Type II and hypernovae) and Type Ia supernovae. At redshift $z=0$, we create a catalogue of $526$ galaxies, among which we determine $80$ early-type galaxies. From the analysis of our simulations, we find [$\\alpha$/Fe]-[","authors_text":"Chiaki Kobayashi, Fiorenzo Vincenzo, Philip Taylor","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-09T22:59:12Z","title":"On the [$\\alpha$/Fe]-[Fe/H] relations in early-type galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03416","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:df96f8449147aefc99af4025511ee7a878f609030d3660e0833574080cec42cb","target":"record","created_at":"2026-05-18T00:09:10Z","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":"0dd40ae9e8c5e8095ec2ce1318be5fe37653a34f34ebb2bef1604aa8dc1a8828","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-09T22:59:12Z","title_canon_sha256":"cb023a06699fe7f053a93a78e9eb063f181fe32cc0d31419bbb1961b78aaf8bf"},"schema_version":"1.0","source":{"id":"1807.03416","kind":"arxiv","version":1}},"canonical_sha256":"338c59fd5bc7d7dfa60a4348f17890518cefddfcd6ce40697ca93acac883bd5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"338c59fd5bc7d7dfa60a4348f17890518cefddfcd6ce40697ca93acac883bd5a","first_computed_at":"2026-05-18T00:09:10.914299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:10.914299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P9+XNDkvG6w90AwRUgoDml5JWG8JJsnCpQWN9jM6XTID5U1wb4W8k+1yOAFPPcIK7g8Zff3D8tg8qOgQKCUkCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:10.914979Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.03416","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df96f8449147aefc99af4025511ee7a878f609030d3660e0833574080cec42cb","sha256:e5822cbfbd733bb0c61f9b39be559fb976a2165cff09bd326f357e86ad63c3c1"],"state_sha256":"91e6b1b791c44423d539688ccd3ea29ba7b414c82f0075412d36f7e4d787d10d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1nqmhv+ksIN7ATVdKF2u8aGqWElqZn6U+G4mjTaahjvns1pzeWf1t6oxpGTT88Aq3gPokzTTQMeiNYZkRH4/Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:50:33.958519Z","bundle_sha256":"131cff4f17f9c3b1a6f879a3c22494c6d813454de1eb9063389d544a2d6ee81b"}}