{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:TQQLB5ZM4WM3PWKSIHEW2UNPAS","short_pith_number":"pith:TQQLB5ZM","canonical_record":{"source":{"id":"1805.01588","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-04T02:25:41Z","cross_cats_sorted":[],"title_canon_sha256":"ee68317a4a9898571a844c6b88360a3d34327933faeeacc87e542d5f045b1a39","abstract_canon_sha256":"a1b424310b16bff65f44ba410aa398f8994e755ef6d9ac83c78e68130af393d3"},"schema_version":"1.0"},"canonical_sha256":"9c20b0f72ce599b7d95241c96d51af04af17b39c04d2425ef7f50962e45d4b70","source":{"kind":"arxiv","id":"1805.01588","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.01588","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"arxiv_version","alias_value":"1805.01588v1","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.01588","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"pith_short_12","alias_value":"TQQLB5ZM4WM3","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TQQLB5ZM4WM3PWKS","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TQQLB5ZM","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:TQQLB5ZM4WM3PWKSIHEW2UNPAS","target":"record","payload":{"canonical_record":{"source":{"id":"1805.01588","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-04T02:25:41Z","cross_cats_sorted":[],"title_canon_sha256":"ee68317a4a9898571a844c6b88360a3d34327933faeeacc87e542d5f045b1a39","abstract_canon_sha256":"a1b424310b16bff65f44ba410aa398f8994e755ef6d9ac83c78e68130af393d3"},"schema_version":"1.0"},"canonical_sha256":"9c20b0f72ce599b7d95241c96d51af04af17b39c04d2425ef7f50962e45d4b70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:40.452354Z","signature_b64":"twIFO3zCX+h447DJ2rvzZwT6ApblmjNVdalc9FfdVa5KxaanaFk++w9vhMwe48Bd+uAZZP3lKPIqbV3QrjKbBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c20b0f72ce599b7d95241c96d51af04af17b39c04d2425ef7f50962e45d4b70","last_reissued_at":"2026-05-18T00:07:40.451848Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:40.451848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.01588","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":"2026-05-18T00:07:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hWkbZi++tv3/b6T3znbW0abQKwjmy89dXQ7o0/1iGNwCVJ/fSppeLnWBz+CZoX7+O4C2C/+VjR0cQgHjIVT3Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:38:05.344721Z"},"content_sha256":"0fd47622864d7959b35999a063504cfb39c1d029e49af31a4f540f81eeeba66d","schema_version":"1.0","event_id":"sha256:0fd47622864d7959b35999a063504cfb39c1d029e49af31a4f540f81eeeba66d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:TQQLB5ZM4WM3PWKSIHEW2UNPAS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How does the stellar disk of the Milky Way get its gas?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Cecilia Scannapieco, Cristina Chiappini, Ivan Minchev, Marie Martig, Sebastian E. Nuza, Thiago C. Junqueira","submitted_at":"2018-05-04T02:25:41Z","abstract_excerpt":"In chemodynamical evolution models it is usually assumed that the Milky Way galaxy forms from the inside-out implying that gas inflows onto the disk decrease with galactocentric distance. Similarly, to reproduce differences between chemical abundances of the thick disk and bulge with respect to those of the thin disk, higher accretion fluxes at early times are postulated. By using a suite of Milky Way-like galaxies extracted from cosmological simulations, we investigate the accretion of gas on the simulated stellar disks during their whole evolution. In general, we find that the picture outlin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.01588","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":"2026-05-18T00:07:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DizNKc8paQvsPi0gZJGOnlbIBcYJ+Ow154b88H9ucFwmwHGoP72TNjUdKZMa44G8SBjsKCligf9doRagGW0nDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:38:05.345058Z"},"content_sha256":"a401be25ed831511f4cf7eb5364ff6a78cf577797cfd373698edca96f15976f2","schema_version":"1.0","event_id":"sha256:a401be25ed831511f4cf7eb5364ff6a78cf577797cfd373698edca96f15976f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS/bundle.json","state_url":"https://pith.science/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS/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":"2026-06-02T15:38:05Z","links":{"resolver":"https://pith.science/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS","bundle":"https://pith.science/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS/bundle.json","state":"https://pith.science/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TQQLB5ZM4WM3PWKSIHEW2UNPAS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TQQLB5ZM4WM3PWKSIHEW2UNPAS","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":"a1b424310b16bff65f44ba410aa398f8994e755ef6d9ac83c78e68130af393d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-04T02:25:41Z","title_canon_sha256":"ee68317a4a9898571a844c6b88360a3d34327933faeeacc87e542d5f045b1a39"},"schema_version":"1.0","source":{"id":"1805.01588","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.01588","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"arxiv_version","alias_value":"1805.01588v1","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.01588","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"pith_short_12","alias_value":"TQQLB5ZM4WM3","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TQQLB5ZM4WM3PWKS","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TQQLB5ZM","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:a401be25ed831511f4cf7eb5364ff6a78cf577797cfd373698edca96f15976f2","target":"graph","created_at":"2026-05-18T00:07:40Z","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":"In chemodynamical evolution models it is usually assumed that the Milky Way galaxy forms from the inside-out implying that gas inflows onto the disk decrease with galactocentric distance. Similarly, to reproduce differences between chemical abundances of the thick disk and bulge with respect to those of the thin disk, higher accretion fluxes at early times are postulated. By using a suite of Milky Way-like galaxies extracted from cosmological simulations, we investigate the accretion of gas on the simulated stellar disks during their whole evolution. In general, we find that the picture outlin","authors_text":"Cecilia Scannapieco, Cristina Chiappini, Ivan Minchev, Marie Martig, Sebastian E. Nuza, Thiago C. Junqueira","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-04T02:25:41Z","title":"How does the stellar disk of the Milky Way get its gas?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.01588","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":"sha256:0fd47622864d7959b35999a063504cfb39c1d029e49af31a4f540f81eeeba66d","target":"record","created_at":"2026-05-18T00:07:40Z","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":"a1b424310b16bff65f44ba410aa398f8994e755ef6d9ac83c78e68130af393d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-04T02:25:41Z","title_canon_sha256":"ee68317a4a9898571a844c6b88360a3d34327933faeeacc87e542d5f045b1a39"},"schema_version":"1.0","source":{"id":"1805.01588","kind":"arxiv","version":1}},"canonical_sha256":"9c20b0f72ce599b7d95241c96d51af04af17b39c04d2425ef7f50962e45d4b70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c20b0f72ce599b7d95241c96d51af04af17b39c04d2425ef7f50962e45d4b70","first_computed_at":"2026-05-18T00:07:40.451848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:40.451848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"twIFO3zCX+h447DJ2rvzZwT6ApblmjNVdalc9FfdVa5KxaanaFk++w9vhMwe48Bd+uAZZP3lKPIqbV3QrjKbBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:40.452354Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.01588","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0fd47622864d7959b35999a063504cfb39c1d029e49af31a4f540f81eeeba66d","sha256:a401be25ed831511f4cf7eb5364ff6a78cf577797cfd373698edca96f15976f2"],"state_sha256":"da61b55d719dee3a0774dcc26f197ad57b1c602d804e204629cdecce79e8515a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5mE2MOTrjpebWf1V4bnGjLdVU6oau9oP3uevO/K7ns0YyCVpd6TLi0oD1CeZcYOg+suOgwUnpPz02jLBeeuyCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T15:38:05.346958Z","bundle_sha256":"0f1b7ddf733ba7273fef8e2faea84ae36fff90cdbf62b9feaf346e77f66a5921"}}