{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:2FLPP43S63VWKZBBCHAZYEEDFS","short_pith_number":"pith:2FLPP43S","schema_version":"1.0","canonical_sha256":"d156f7f372f6eb65642111c19c10832c8801062e12ff03bbe440a6cd9ce63212","source":{"kind":"arxiv","id":"0810.0137","version":1},"attestation_state":"computed","paper":{"title":"Specific Angular Momentum of Disc Merger Remnants and the $\\lambda_R$-Parameter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andreas Burkert, Eric Emsellem, Michele Cappellari, Roland Jesseit, Thorsten Naab","submitted_at":"2008-10-01T12:17:20Z","abstract_excerpt":"We use two-dimensional kinematic maps of simulated binary disc mergers to investigate the $\\lambda_R$-parameter, which is a luminosity weighted measure of projected angular momentum per unit mass. This parameter was introduced to subdivide the SAURON sample of early type galaxies in so called fast $\\lambda_R > 0.1$ and slow rotators $\\lambda_R < 0.1$. Tests on merger remnants reveal that $\\lambda_R$ is a robust indicator of the true angular momentum content in elliptical galaxies. We find the same range of $\\lambda_R$ values in our merger remnants as in the SAURON galaxies. The merger mass rat"},"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":"0810.0137","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-01T12:17:20Z","cross_cats_sorted":[],"title_canon_sha256":"c8c02d8b26873cbbe6034a20bea1aa46cc5547fc471b9fc9d6fd5168e2adb4ac","abstract_canon_sha256":"d9231dd8a388df55292e853f6b8b3f33a8d64904cddd1c06849c4719db266901"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:33.198569Z","signature_b64":"O/vSdDkQe0EpKD6C9QQ0oQSNpjbAkifCvP4Ls96LkIumiO2+W7M3wdrVnNMAUnBbtNn3d+UCE+aE4Tn1uZBaDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d156f7f372f6eb65642111c19c10832c8801062e12ff03bbe440a6cd9ce63212","last_reissued_at":"2026-05-18T02:15:33.197855Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:33.197855Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Specific Angular Momentum of Disc Merger Remnants and the $\\lambda_R$-Parameter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andreas Burkert, Eric Emsellem, Michele Cappellari, Roland Jesseit, Thorsten Naab","submitted_at":"2008-10-01T12:17:20Z","abstract_excerpt":"We use two-dimensional kinematic maps of simulated binary disc mergers to investigate the $\\lambda_R$-parameter, which is a luminosity weighted measure of projected angular momentum per unit mass. This parameter was introduced to subdivide the SAURON sample of early type galaxies in so called fast $\\lambda_R > 0.1$ and slow rotators $\\lambda_R < 0.1$. Tests on merger remnants reveal that $\\lambda_R$ is a robust indicator of the true angular momentum content in elliptical galaxies. We find the same range of $\\lambda_R$ values in our merger remnants as in the SAURON galaxies. The merger mass rat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.0137","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0810.0137","created_at":"2026-05-18T02:15:33.197960+00:00"},{"alias_kind":"arxiv_version","alias_value":"0810.0137v1","created_at":"2026-05-18T02:15:33.197960+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.0137","created_at":"2026-05-18T02:15:33.197960+00:00"},{"alias_kind":"pith_short_12","alias_value":"2FLPP43S63VW","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"2FLPP43S63VWKZBB","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"2FLPP43S","created_at":"2026-05-18T12:25:56.245647+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/2FLPP43S63VWKZBBCHAZYEEDFS","json":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS.json","graph_json":"https://pith.science/api/pith-number/2FLPP43S63VWKZBBCHAZYEEDFS/graph.json","events_json":"https://pith.science/api/pith-number/2FLPP43S63VWKZBBCHAZYEEDFS/events.json","paper":"https://pith.science/paper/2FLPP43S"},"agent_actions":{"view_html":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS","download_json":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS.json","view_paper":"https://pith.science/paper/2FLPP43S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0810.0137&json=true","fetch_graph":"https://pith.science/api/pith-number/2FLPP43S63VWKZBBCHAZYEEDFS/graph.json","fetch_events":"https://pith.science/api/pith-number/2FLPP43S63VWKZBBCHAZYEEDFS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS/action/storage_attestation","attest_author":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS/action/author_attestation","sign_citation":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS/action/citation_signature","submit_replication":"https://pith.science/pith/2FLPP43S63VWKZBBCHAZYEEDFS/action/replication_record"}},"created_at":"2026-05-18T02:15:33.197960+00:00","updated_at":"2026-05-18T02:15:33.197960+00:00"}