{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:6GFHVZU6P2NKFADMHHNLI2MSFU","short_pith_number":"pith:6GFHVZU6","schema_version":"1.0","canonical_sha256":"f18a7ae69e7e9aa2806c39dab469922d3e0f96322b397839265da0e8fe921c31","source":{"kind":"arxiv","id":"astro-ph/0207208","version":1},"attestation_state":"computed","paper":{"title":"Iteration Method to Derive Exact Rotation Curves from Position-Velocity Diagrams of Spiral Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Tsutomu TAKAMIYA, Univ. Tokyo), Yoshiaki SOFUE (IoA","submitted_at":"2002-07-10T09:26:19Z","abstract_excerpt":"We present an iteration method to derive exact rotation curves (RC) of spiral galaxies from observed position-velocity diagrams (PVD), which comprises the following procedure. An initial rotation curve, RC0, is adopted from an observed PV diagram (PV0), obtained by any simple method such as the peak-intensity method. Using this rotation curve and an observed radial distribution of intensity (emissivity), we construct a simulated PV diagram (PV1). The difference between a rotation curve obtained from this PV1 and the original RC (e.g., difference between peak-intensity velocities) is used to co"},"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":"astro-ph/0207208","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-10T09:26:19Z","cross_cats_sorted":[],"title_canon_sha256":"044824f30a40c75ba5711604bd31829570a3595be4a17075b29457e91a6b5512","abstract_canon_sha256":"707d30e734a3da7e93aa7eade175db5fd2336b0b38f08890fd9be7d17c449367"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:30:21.179551Z","signature_b64":"NbHCZl2ARdrtHHC8JWXDyy+V0EK8jr4Pl6AJZnV9bPDEjK8VrHrCabGFgFoGeNInWsWLutXSO5YJjQDBD2iQBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f18a7ae69e7e9aa2806c39dab469922d3e0f96322b397839265da0e8fe921c31","last_reissued_at":"2026-07-04T16:30:21.179167Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:30:21.179167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Iteration Method to Derive Exact Rotation Curves from Position-Velocity Diagrams of Spiral Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Tsutomu TAKAMIYA, Univ. Tokyo), Yoshiaki SOFUE (IoA","submitted_at":"2002-07-10T09:26:19Z","abstract_excerpt":"We present an iteration method to derive exact rotation curves (RC) of spiral galaxies from observed position-velocity diagrams (PVD), which comprises the following procedure. An initial rotation curve, RC0, is adopted from an observed PV diagram (PV0), obtained by any simple method such as the peak-intensity method. Using this rotation curve and an observed radial distribution of intensity (emissivity), we construct a simulated PV diagram (PV1). The difference between a rotation curve obtained from this PV1 and the original RC (e.g., difference between peak-intensity velocities) is used to co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0207208","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0207208/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"astro-ph/0207208","created_at":"2026-07-04T16:30:21.179218+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0207208v1","created_at":"2026-07-04T16:30:21.179218+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0207208","created_at":"2026-07-04T16:30:21.179218+00:00"},{"alias_kind":"pith_short_12","alias_value":"6GFHVZU6P2NK","created_at":"2026-07-04T16:30:21.179218+00:00"},{"alias_kind":"pith_short_16","alias_value":"6GFHVZU6P2NKFADM","created_at":"2026-07-04T16:30:21.179218+00:00"},{"alias_kind":"pith_short_8","alias_value":"6GFHVZU6","created_at":"2026-07-04T16:30:21.179218+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/6GFHVZU6P2NKFADMHHNLI2MSFU","json":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU.json","graph_json":"https://pith.science/api/pith-number/6GFHVZU6P2NKFADMHHNLI2MSFU/graph.json","events_json":"https://pith.science/api/pith-number/6GFHVZU6P2NKFADMHHNLI2MSFU/events.json","paper":"https://pith.science/paper/6GFHVZU6"},"agent_actions":{"view_html":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU","download_json":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU.json","view_paper":"https://pith.science/paper/6GFHVZU6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0207208&json=true","fetch_graph":"https://pith.science/api/pith-number/6GFHVZU6P2NKFADMHHNLI2MSFU/graph.json","fetch_events":"https://pith.science/api/pith-number/6GFHVZU6P2NKFADMHHNLI2MSFU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU/action/storage_attestation","attest_author":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU/action/author_attestation","sign_citation":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU/action/citation_signature","submit_replication":"https://pith.science/pith/6GFHVZU6P2NKFADMHHNLI2MSFU/action/replication_record"}},"created_at":"2026-07-04T16:30:21.179218+00:00","updated_at":"2026-07-04T16:30:21.179218+00:00"}