{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:RU2IECU4AFMWPM5TPBX7SQRNHD","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":"868544595885d1964f4e68d62c2ea1b7dcdcaf37863cfd742dae03d9253912b2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-06-29T20:00:02Z","title_canon_sha256":"77fbb1cdf19ce122bdaefdd506578a7da5e812455f23d4d5205856f128b00d7b"},"schema_version":"1.0","source":{"id":"1606.09251","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.09251","created_at":"2026-05-18T00:59:24Z"},{"alias_kind":"arxiv_version","alias_value":"1606.09251v1","created_at":"2026-05-18T00:59:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.09251","created_at":"2026-05-18T00:59:24Z"},{"alias_kind":"pith_short_12","alias_value":"RU2IECU4AFMW","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RU2IECU4AFMWPM5T","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RU2IECU4","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:53e2d037b456c1d9c18952db0e4cea1602dd3d6adbf3f338a13bbc7a94da3214","target":"graph","created_at":"2026-05-18T00:59:24Z","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":"We introduce SPARC (Spitzer Photometry & Accurate Rotation Curves): a sample of 175 nearby galaxies with new surface photometry at 3.6 um and high-quality rotation curves from previous HI/Halpha studies. SPARC spans a broad range of morphologies (S0 to Irr), luminosities (~5 dex), and surface brightnesses (~4 dex). We derive [3.6] surface photometry and study structural relations of stellar and gas disks. We find that both the stellar mass-HI mass relation and the stellar radius-HI radius relation have significant intrinsic scatter, while the HI mass-radius relation is extremely tight. We buil","authors_text":"(2) University of Oregon), Federico Lelli (1), James M. Schombert (2) ((1) Case Western Reserve University, Stacy S. McGaugh (1)","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-06-29T20:00:02Z","title":"SPARC: Mass Models for 175 Disk Galaxies with Spitzer Photometry and Accurate Rotation Curves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.09251","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:bacc0e050c1fc71839f4cdc5b534388b8d9f9d7e8a2cef2789abbd22f033a14a","target":"record","created_at":"2026-05-18T00:59:24Z","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":"868544595885d1964f4e68d62c2ea1b7dcdcaf37863cfd742dae03d9253912b2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-06-29T20:00:02Z","title_canon_sha256":"77fbb1cdf19ce122bdaefdd506578a7da5e812455f23d4d5205856f128b00d7b"},"schema_version":"1.0","source":{"id":"1606.09251","kind":"arxiv","version":1}},"canonical_sha256":"8d34820a9c015967b3b3786ff9422d38dc0b38700f1cc1acabe73f10a9a0008e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d34820a9c015967b3b3786ff9422d38dc0b38700f1cc1acabe73f10a9a0008e","first_computed_at":"2026-05-18T00:59:24.588294Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:24.588294Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xO7/Q4Ce/GlPED5P1Ko0DVoUGOsOUHRmTlQOraqEaomJK8zYDMv8ziCQXIH5uiJrb5oYDFpva0AtWDbneifIDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:24.588914Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.09251","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bacc0e050c1fc71839f4cdc5b534388b8d9f9d7e8a2cef2789abbd22f033a14a","sha256:53e2d037b456c1d9c18952db0e4cea1602dd3d6adbf3f338a13bbc7a94da3214"],"state_sha256":"12a27b3a90723a33bd0c1d38ba86c29dd2390e11003929305e207b12aa6bbd2f"}