{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:U45JRAEA6OUYK4WCQVW2W7BGJ3","short_pith_number":"pith:U45JRAEA","canonical_record":{"source":{"id":"1108.2946","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-15T07:13:35Z","cross_cats_sorted":[],"title_canon_sha256":"39cdc3771ca5258e636300c805e9eaa8a8c4646093dcbfe0c2afa78a9be3d8cb","abstract_canon_sha256":"d63b445f9df779a02da66625f39cd34bdcfd22eb719c9dbac1e3a09a75c4beb2"},"schema_version":"1.0"},"canonical_sha256":"a73a988080f3a98572c2856dab7c264ec3db87172f7b8558487609fa5ab47ee1","source":{"kind":"arxiv","id":"1108.2946","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.2946","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"arxiv_version","alias_value":"1108.2946v1","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.2946","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"pith_short_12","alias_value":"U45JRAEA6OUY","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"U45JRAEA6OUYK4WC","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"U45JRAEA","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:U45JRAEA6OUYK4WCQVW2W7BGJ3","target":"record","payload":{"canonical_record":{"source":{"id":"1108.2946","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-15T07:13:35Z","cross_cats_sorted":[],"title_canon_sha256":"39cdc3771ca5258e636300c805e9eaa8a8c4646093dcbfe0c2afa78a9be3d8cb","abstract_canon_sha256":"d63b445f9df779a02da66625f39cd34bdcfd22eb719c9dbac1e3a09a75c4beb2"},"schema_version":"1.0"},"canonical_sha256":"a73a988080f3a98572c2856dab7c264ec3db87172f7b8558487609fa5ab47ee1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:53.959767Z","signature_b64":"NSsi1Y09pDhkuu4WuO+JLmj1HLaY71uEjSYMDion5Zt2VmASrJnyPUHRKDDn40hTfgGjJmmY5bTJsoEoNuqGDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a73a988080f3a98572c2856dab7c264ec3db87172f7b8558487609fa5ab47ee1","last_reissued_at":"2026-05-18T02:00:53.958993Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:53.958993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.2946","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:00:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xtbxgp2TVYt7xgvvTPZQijEZmeURfH8qqUTG9LuBpJbB1+fmSHH+pVSYcmspWFQiGNpBkiEjEfbwxjUENZb2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:27:43.916852Z"},"content_sha256":"ad9bbbba184044b8d9c9e0954591d762f0561173a35b1ee38928bd3b17ffb803","schema_version":"1.0","event_id":"sha256:ad9bbbba184044b8d9c9e0954591d762f0561173a35b1ee38928bd3b17ffb803"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:U45JRAEA6OUYK4WCQVW2W7BGJ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The DiskMass Survey. IV. The Dark-Matter-Dominated Galaxy UGC 463","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Univ. of Wisconsin-Madison, (3) NRC Herzberg Institute of Astrophysics, (4) NOAO), Andrew Schechtman-Rook (2) ((1) Kapteyn Astronomical Institute, David R. Andersen (3), Kyle B. Westfall (1), Marc A. W. Verheijen (1), Matthew A. Bershady (2), Robert A. Swaters (4), Thomas P. K. Martinsson (1)","submitted_at":"2011-08-15T07:13:35Z","abstract_excerpt":"We present a detailed and unique mass budget for the high-surface-brightness galaxy UGC 463, showing it is dominated by dark matter (DM) at radii beyond one scale length (h_R) and has a baryonic-to-DM mass ratio of approximately 1:3 within 4.2 h_R. Assuming a constant scale height (h_z, calculated via an empirical oblateness relation), we calculate dynamical disk mass surface densities from stellar kinematics, which provide vertical velocity dispersions after correcting for the shape of the stellar velocity ellipsoid (measured to have sigma_theta/sigma_R=1.04 +/- 0.22 and sigma_z/sigma_R=0.48 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.2946","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:00:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G6J/kMrQifGm9QjUeJU/7Rcu7S/aGsdOwmjWHh0mLYFGtgnuQRnuNat+cervYOzKi7CtISHtPKgYvzm3CWEeBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T14:27:43.917199Z"},"content_sha256":"6d6221a0f8949377da4158f05d076d89efd99b291a050407198a05a6cf702f21","schema_version":"1.0","event_id":"sha256:6d6221a0f8949377da4158f05d076d89efd99b291a050407198a05a6cf702f21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3/bundle.json","state_url":"https://pith.science/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-05T14:27:43Z","links":{"resolver":"https://pith.science/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3","bundle":"https://pith.science/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3/bundle.json","state":"https://pith.science/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U45JRAEA6OUYK4WCQVW2W7BGJ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:U45JRAEA6OUYK4WCQVW2W7BGJ3","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":"d63b445f9df779a02da66625f39cd34bdcfd22eb719c9dbac1e3a09a75c4beb2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-15T07:13:35Z","title_canon_sha256":"39cdc3771ca5258e636300c805e9eaa8a8c4646093dcbfe0c2afa78a9be3d8cb"},"schema_version":"1.0","source":{"id":"1108.2946","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.2946","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"arxiv_version","alias_value":"1108.2946v1","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.2946","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"pith_short_12","alias_value":"U45JRAEA6OUY","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"U45JRAEA6OUYK4WC","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"U45JRAEA","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:6d6221a0f8949377da4158f05d076d89efd99b291a050407198a05a6cf702f21","target":"graph","created_at":"2026-05-18T02:00:53Z","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 present a detailed and unique mass budget for the high-surface-brightness galaxy UGC 463, showing it is dominated by dark matter (DM) at radii beyond one scale length (h_R) and has a baryonic-to-DM mass ratio of approximately 1:3 within 4.2 h_R. Assuming a constant scale height (h_z, calculated via an empirical oblateness relation), we calculate dynamical disk mass surface densities from stellar kinematics, which provide vertical velocity dispersions after correcting for the shape of the stellar velocity ellipsoid (measured to have sigma_theta/sigma_R=1.04 +/- 0.22 and sigma_z/sigma_R=0.48 ","authors_text":"(2) Univ. of Wisconsin-Madison, (3) NRC Herzberg Institute of Astrophysics, (4) NOAO), Andrew Schechtman-Rook (2) ((1) Kapteyn Astronomical Institute, David R. Andersen (3), Kyle B. Westfall (1), Marc A. W. Verheijen (1), Matthew A. Bershady (2), Robert A. Swaters (4), Thomas P. K. Martinsson (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-15T07:13:35Z","title":"The DiskMass Survey. IV. The Dark-Matter-Dominated Galaxy UGC 463"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.2946","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:ad9bbbba184044b8d9c9e0954591d762f0561173a35b1ee38928bd3b17ffb803","target":"record","created_at":"2026-05-18T02:00:53Z","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":"d63b445f9df779a02da66625f39cd34bdcfd22eb719c9dbac1e3a09a75c4beb2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-15T07:13:35Z","title_canon_sha256":"39cdc3771ca5258e636300c805e9eaa8a8c4646093dcbfe0c2afa78a9be3d8cb"},"schema_version":"1.0","source":{"id":"1108.2946","kind":"arxiv","version":1}},"canonical_sha256":"a73a988080f3a98572c2856dab7c264ec3db87172f7b8558487609fa5ab47ee1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a73a988080f3a98572c2856dab7c264ec3db87172f7b8558487609fa5ab47ee1","first_computed_at":"2026-05-18T02:00:53.958993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:53.958993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NSsi1Y09pDhkuu4WuO+JLmj1HLaY71uEjSYMDion5Zt2VmASrJnyPUHRKDDn40hTfgGjJmmY5bTJsoEoNuqGDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:53.959767Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.2946","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad9bbbba184044b8d9c9e0954591d762f0561173a35b1ee38928bd3b17ffb803","sha256:6d6221a0f8949377da4158f05d076d89efd99b291a050407198a05a6cf702f21"],"state_sha256":"7600d14ca0ae6e775e7e95833639c1b085b4e8735da2e9036fa4243b858c5de9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"emcQIk9pIkSm+PljP295Y+J5ZP7Ee3m2f8Nz7SDfQCRqL6qNkMxMoySrIybQ0gcZ0EYoVXdxfyfvPpR2QAsADQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T14:27:43.919413Z","bundle_sha256":"b5b100c89d2a0076ac805101b1ce8c65f8ce2ca84f5c91f1049676bb48e16035"}}