{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:JCGND72KUUBVSYMFUJKI7HEUQQ","short_pith_number":"pith:JCGND72K","canonical_record":{"source":{"id":"0905.3907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-05-24T15:29:09Z","cross_cats_sorted":[],"title_canon_sha256":"71b2b6b6428a6d7f8d888d217c33104da0cdbc095534d154e35f82aed33bcf74","abstract_canon_sha256":"3c89a57d9445e2a74ce183c021eead408c9681f5f2794414d344cc02462ffab5"},"schema_version":"1.0"},"canonical_sha256":"488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981","source":{"kind":"arxiv","id":"0905.3907","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.3907","created_at":"2026-05-18T02:13:37Z"},{"alias_kind":"arxiv_version","alias_value":"0905.3907v1","created_at":"2026-05-18T02:13:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.3907","created_at":"2026-05-18T02:13:37Z"},{"alias_kind":"pith_short_12","alias_value":"JCGND72KUUBV","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"JCGND72KUUBVSYMF","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"JCGND72K","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:JCGND72KUUBVSYMFUJKI7HEUQQ","target":"record","payload":{"canonical_record":{"source":{"id":"0905.3907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-05-24T15:29:09Z","cross_cats_sorted":[],"title_canon_sha256":"71b2b6b6428a6d7f8d888d217c33104da0cdbc095534d154e35f82aed33bcf74","abstract_canon_sha256":"3c89a57d9445e2a74ce183c021eead408c9681f5f2794414d344cc02462ffab5"},"schema_version":"1.0"},"canonical_sha256":"488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:37.824934Z","signature_b64":"MUqGGNTzfYm+DK55qRDiFhYO/aQYmaa8ZBac4mVg0f9/od3NrWEfBukIXhg0XNZrQQggK+E72Iga/jKaJPmWDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981","last_reissued_at":"2026-05-18T02:13:37.824553Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:37.824553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.3907","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":"2026-05-18T02:13:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NUTm+qUh7O+cr++0f0WGJPTmn9GhpZMJX1aFOXaBKjybmkz5ECXlvHAkjI3lSLT7vCmQzOHJJfv89GtJhnlbCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:59:51.963354Z"},"content_sha256":"bb3fd90cf9f3c8c911e54fdafb7d5236a72e3d4dbcc7809af1d43f36f4d66913","schema_version":"1.0","event_id":"sha256:bb3fd90cf9f3c8c911e54fdafb7d5236a72e3d4dbcc7809af1d43f36f4d66913"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:JCGND72KUUBVSYMFUJKI7HEUQQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HI Observations of Five Groups of Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Stilp, E. Freeland, E. Wilcots","submitted_at":"2009-05-24T15:29:09Z","abstract_excerpt":"We present the results of HI observations of five groups of galaxies spanning a range of velocity dispersion and spiral fraction (brightest optical group member in parenthesis): NGC 7582 (NGC 7552), USGC U207 (NGC 2759), USGC U070 (NGC 664), USGC U412 (NGC 3822), USGC U451 (NGC 4065). Neutral intragroup gas is detected in three of the five groups. We present the discovery of a previously uncataloged galaxy in the USGC U070 group at RA(2000)= 01h45m27s, Dec(2000) = +04d36'19\" which we are designating FSW J014526.92+043619.1. We compile an HI mass function for the group environment and find that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.3907","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":"2026-05-18T02:13:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iepl+VR4lnrL1RGGsLz57hzbkojj9d36a62wOhCrK6sFTqzPCphaWYmeFoWQjGuxynDSsEqHvwPIbLfPJxqeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:59:51.964038Z"},"content_sha256":"a1d28b2bc9b55c906ac58cfda04a4324b0e951f22ac9979ea4c424e80341cc2f","schema_version":"1.0","event_id":"sha256:a1d28b2bc9b55c906ac58cfda04a4324b0e951f22ac9979ea4c424e80341cc2f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JCGND72KUUBVSYMFUJKI7HEUQQ/bundle.json","state_url":"https://pith.science/pith/JCGND72KUUBVSYMFUJKI7HEUQQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JCGND72KUUBVSYMFUJKI7HEUQQ/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":"2026-06-11T06:59:51Z","links":{"resolver":"https://pith.science/pith/JCGND72KUUBVSYMFUJKI7HEUQQ","bundle":"https://pith.science/pith/JCGND72KUUBVSYMFUJKI7HEUQQ/bundle.json","state":"https://pith.science/pith/JCGND72KUUBVSYMFUJKI7HEUQQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JCGND72KUUBVSYMFUJKI7HEUQQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:JCGND72KUUBVSYMFUJKI7HEUQQ","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":"3c89a57d9445e2a74ce183c021eead408c9681f5f2794414d344cc02462ffab5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-05-24T15:29:09Z","title_canon_sha256":"71b2b6b6428a6d7f8d888d217c33104da0cdbc095534d154e35f82aed33bcf74"},"schema_version":"1.0","source":{"id":"0905.3907","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.3907","created_at":"2026-05-18T02:13:37Z"},{"alias_kind":"arxiv_version","alias_value":"0905.3907v1","created_at":"2026-05-18T02:13:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.3907","created_at":"2026-05-18T02:13:37Z"},{"alias_kind":"pith_short_12","alias_value":"JCGND72KUUBV","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"JCGND72KUUBVSYMF","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"JCGND72K","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:a1d28b2bc9b55c906ac58cfda04a4324b0e951f22ac9979ea4c424e80341cc2f","target":"graph","created_at":"2026-05-18T02:13:37Z","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 the results of HI observations of five groups of galaxies spanning a range of velocity dispersion and spiral fraction (brightest optical group member in parenthesis): NGC 7582 (NGC 7552), USGC U207 (NGC 2759), USGC U070 (NGC 664), USGC U412 (NGC 3822), USGC U451 (NGC 4065). Neutral intragroup gas is detected in three of the five groups. We present the discovery of a previously uncataloged galaxy in the USGC U070 group at RA(2000)= 01h45m27s, Dec(2000) = +04d36'19\" which we are designating FSW J014526.92+043619.1. We compile an HI mass function for the group environment and find that","authors_text":"A. Stilp, E. Freeland, E. Wilcots","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-05-24T15:29:09Z","title":"HI Observations of Five Groups of Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.3907","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:bb3fd90cf9f3c8c911e54fdafb7d5236a72e3d4dbcc7809af1d43f36f4d66913","target":"record","created_at":"2026-05-18T02:13:37Z","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":"3c89a57d9445e2a74ce183c021eead408c9681f5f2794414d344cc02462ffab5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-05-24T15:29:09Z","title_canon_sha256":"71b2b6b6428a6d7f8d888d217c33104da0cdbc095534d154e35f82aed33bcf74"},"schema_version":"1.0","source":{"id":"0905.3907","kind":"arxiv","version":1}},"canonical_sha256":"488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981","first_computed_at":"2026-05-18T02:13:37.824553Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:37.824553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MUqGGNTzfYm+DK55qRDiFhYO/aQYmaa8ZBac4mVg0f9/od3NrWEfBukIXhg0XNZrQQggK+E72Iga/jKaJPmWDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:37.824934Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.3907","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb3fd90cf9f3c8c911e54fdafb7d5236a72e3d4dbcc7809af1d43f36f4d66913","sha256:a1d28b2bc9b55c906ac58cfda04a4324b0e951f22ac9979ea4c424e80341cc2f"],"state_sha256":"3b26efefbdf8b6f57747e24156860868458d874e78d73e88d2fc915028dac8b4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h6Bnlfsbntp+T1btmFeEbiMDr5+ATDjINaKOFQoU9xuX6C90S/xkGyPETvUWT2uu6dRBmYW2iGClo8jGHS6TBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T06:59:51.968470Z","bundle_sha256":"dbddd1e18fff601d4c513fcb289582ce5a879a86fb4e48d68d48f05351d62e27"}}