{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:J7FT7PDBHHMQJ6YTSHEJBKEZFH","short_pith_number":"pith:J7FT7PDB","schema_version":"1.0","canonical_sha256":"4fcb3fbc6139d904fb1391c890a89929ea3bee51a67ae403ec75ca1834dbc5d4","source":{"kind":"arxiv","id":"1404.4053","version":2},"attestation_state":"computed","paper":{"title":"Where do galaxies end? Comparing measurement techniques of hydrodynamic-simulation galaxies' integrated properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam R. H. Stevens, Darren J. Croton, Marie Martig, Yu Feng","submitted_at":"2014-04-15T20:00:28Z","abstract_excerpt":"Using the suite of high-resolution zoom re-simulations of individual haloes by Martig et al., and the large-scale simulation \\emph{MassiveBlack-II}, we examine the differences in measured galaxy properties from techniques with various aperture definitions of where galaxies end. We perform techniques popular in the literature and present a new technique of our own, where the aperture radius is based on the baryonic mass profiles of simulated (sub)haloes. For the average Milky-Way-mass system, we find the two most popular techniques in the literature return differences of order 30 per cent for s"},"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":"1404.4053","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-04-15T20:00:28Z","cross_cats_sorted":[],"title_canon_sha256":"003e7d0ae8930c7e46c0c06727f7aad4ee0391b9ee5f4f0094ef5a1598f8f8bd","abstract_canon_sha256":"b02d69c2513fcaac25ec70d78fd746ff45701196a27c5b084a04a3479a3f78fe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:41:59.479561Z","signature_b64":"DwVnhOD0mXdkz4kGZVJETiv1eIuzJtdjBWIu/6G/oNps9epltKwHNdxF1I+uEyE0Wm/EvbmvCBHe/4FrA0yhAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4fcb3fbc6139d904fb1391c890a89929ea3bee51a67ae403ec75ca1834dbc5d4","last_reissued_at":"2026-05-18T02:41:59.478995Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:41:59.478995Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Where do galaxies end? Comparing measurement techniques of hydrodynamic-simulation galaxies' integrated properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam R. H. Stevens, Darren J. Croton, Marie Martig, Yu Feng","submitted_at":"2014-04-15T20:00:28Z","abstract_excerpt":"Using the suite of high-resolution zoom re-simulations of individual haloes by Martig et al., and the large-scale simulation \\emph{MassiveBlack-II}, we examine the differences in measured galaxy properties from techniques with various aperture definitions of where galaxies end. We perform techniques popular in the literature and present a new technique of our own, where the aperture radius is based on the baryonic mass profiles of simulated (sub)haloes. For the average Milky-Way-mass system, we find the two most popular techniques in the literature return differences of order 30 per cent for s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.4053","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":"1404.4053","created_at":"2026-05-18T02:41:59.479048+00:00"},{"alias_kind":"arxiv_version","alias_value":"1404.4053v2","created_at":"2026-05-18T02:41:59.479048+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.4053","created_at":"2026-05-18T02:41:59.479048+00:00"},{"alias_kind":"pith_short_12","alias_value":"J7FT7PDBHHMQ","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_16","alias_value":"J7FT7PDBHHMQJ6YT","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_8","alias_value":"J7FT7PDB","created_at":"2026-05-18T12:28:33.132498+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/J7FT7PDBHHMQJ6YTSHEJBKEZFH","json":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH.json","graph_json":"https://pith.science/api/pith-number/J7FT7PDBHHMQJ6YTSHEJBKEZFH/graph.json","events_json":"https://pith.science/api/pith-number/J7FT7PDBHHMQJ6YTSHEJBKEZFH/events.json","paper":"https://pith.science/paper/J7FT7PDB"},"agent_actions":{"view_html":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH","download_json":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH.json","view_paper":"https://pith.science/paper/J7FT7PDB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1404.4053&json=true","fetch_graph":"https://pith.science/api/pith-number/J7FT7PDBHHMQJ6YTSHEJBKEZFH/graph.json","fetch_events":"https://pith.science/api/pith-number/J7FT7PDBHHMQJ6YTSHEJBKEZFH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH/action/storage_attestation","attest_author":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH/action/author_attestation","sign_citation":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH/action/citation_signature","submit_replication":"https://pith.science/pith/J7FT7PDBHHMQJ6YTSHEJBKEZFH/action/replication_record"}},"created_at":"2026-05-18T02:41:59.479048+00:00","updated_at":"2026-05-18T02:41:59.479048+00:00"}