{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:PB445NIUQQQLE52I5O6P7DBAZM","short_pith_number":"pith:PB445NIU","schema_version":"1.0","canonical_sha256":"7879ceb5148420b27748ebbcff8c20cb221dbb91e008cf454736f5c77f87c4b7","source":{"kind":"arxiv","id":"1105.2562","version":2},"attestation_state":"computed","paper":{"title":"Hierarchical formation of bulgeless galaxies II: Redistribution of angular momentum via galactic fountains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"B. K. Gibson, C. B. Brook, G. Stinson, J. Wadsley, R. Ro\\v{s}kar, T. Quinn","submitted_at":"2011-05-12T20:00:01Z","abstract_excerpt":"Within a fully cosmological hydrodynamical simulation, we form a galaxy which rotates at 140 km/s, and is characterised by two loose spiral arms and a bar, indicative of a Hubble Type SBc/d galaxy. We show that our simulated galaxy has no classical bulge, with a pure disc profile at z=1, well after the major merging activity has ended. A long-lived bar subsequently forms, resulting in the formation of a secularly-formed \"pseudo\" bulge, with the final bulge-to-total light ratio B/T=0.21. We show that the majority of gas which loses angular momentum and falls to the central region of the galaxy "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1105.2562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-12T20:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f0043b2df78a85301ec170517bec889c80689d1ba4299405a0962fb079a81c0c","abstract_canon_sha256":"907ca7c3337eda4e08e41173bdc30b3b5a9cb2f5683c557e17d0d9666f9b648d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:58.931968Z","signature_b64":"+G5a+2zMHDNMOp6QTI4A0uKNzLxG4FDIMFVgMlYJwFviT1ee1MHZ5sqSpUFUqN9/v8WjY3vWiqRS+6pbHmDPAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7879ceb5148420b27748ebbcff8c20cb221dbb91e008cf454736f5c77f87c4b7","last_reissued_at":"2026-05-18T02:01:58.931442Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:58.931442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hierarchical formation of bulgeless galaxies II: Redistribution of angular momentum via galactic fountains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"B. K. Gibson, C. B. Brook, G. Stinson, J. Wadsley, R. Ro\\v{s}kar, T. Quinn","submitted_at":"2011-05-12T20:00:01Z","abstract_excerpt":"Within a fully cosmological hydrodynamical simulation, we form a galaxy which rotates at 140 km/s, and is characterised by two loose spiral arms and a bar, indicative of a Hubble Type SBc/d galaxy. We show that our simulated galaxy has no classical bulge, with a pure disc profile at z=1, well after the major merging activity has ended. A long-lived bar subsequently forms, resulting in the formation of a secularly-formed \"pseudo\" bulge, with the final bulge-to-total light ratio B/T=0.21. We show that the majority of gas which loses angular momentum and falls to the central region of the galaxy "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.2562","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1105.2562","created_at":"2026-05-18T02:01:58.931526+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.2562v2","created_at":"2026-05-18T02:01:58.931526+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.2562","created_at":"2026-05-18T02:01:58.931526+00:00"},{"alias_kind":"pith_short_12","alias_value":"PB445NIUQQQL","created_at":"2026-05-18T12:26:39.201973+00:00"},{"alias_kind":"pith_short_16","alias_value":"PB445NIUQQQLE52I","created_at":"2026-05-18T12:26:39.201973+00:00"},{"alias_kind":"pith_short_8","alias_value":"PB445NIU","created_at":"2026-05-18T12:26:39.201973+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM","json":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM.json","graph_json":"https://pith.science/api/pith-number/PB445NIUQQQLE52I5O6P7DBAZM/graph.json","events_json":"https://pith.science/api/pith-number/PB445NIUQQQLE52I5O6P7DBAZM/events.json","paper":"https://pith.science/paper/PB445NIU"},"agent_actions":{"view_html":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM","download_json":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM.json","view_paper":"https://pith.science/paper/PB445NIU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.2562&json=true","fetch_graph":"https://pith.science/api/pith-number/PB445NIUQQQLE52I5O6P7DBAZM/graph.json","fetch_events":"https://pith.science/api/pith-number/PB445NIUQQQLE52I5O6P7DBAZM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM/action/storage_attestation","attest_author":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM/action/author_attestation","sign_citation":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM/action/citation_signature","submit_replication":"https://pith.science/pith/PB445NIUQQQLE52I5O6P7DBAZM/action/replication_record"}},"created_at":"2026-05-18T02:01:58.931526+00:00","updated_at":"2026-05-18T02:01:58.931526+00:00"}