{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:U6ULKT7PAYWKTW63XXRBKLGIO4","short_pith_number":"pith:U6ULKT7P","canonical_record":{"source":{"id":"astro-ph/0109087","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-09-06T11:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"7676e1317b069b8811c06bf0c9e3ae37ed375c99017e62e314675abe8552a931","abstract_canon_sha256":"a9e034493ca6389c8bd8dd5e089ad885bc51c0afefe43636058594eeb686c638"},"schema_version":"1.0"},"canonical_sha256":"a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90","source":{"kind":"arxiv","id":"astro-ph/0109087","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0109087","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0109087v1","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0109087","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"pith_short_12","alias_value":"U6ULKT7PAYWK","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"U6ULKT7PAYWKTW63","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"U6ULKT7P","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:U6ULKT7PAYWKTW63XXRBKLGIO4","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0109087","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-09-06T11:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"7676e1317b069b8811c06bf0c9e3ae37ed375c99017e62e314675abe8552a931","abstract_canon_sha256":"a9e034493ca6389c8bd8dd5e089ad885bc51c0afefe43636058594eeb686c638"},"schema_version":"1.0"},"canonical_sha256":"a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:45.539341Z","signature_b64":"6pQK1ETeDR6/ctXWIsbanqkqApL0jRrG5P7Oh/qhCtK5l6RD3nRJxBXEDkmBcgAIsU0fPkkFiboFEKU/PItICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90","last_reissued_at":"2026-05-18T01:07:45.538697Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:45.538697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0109087","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":"2026-05-18T01:07:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HCctA2mMSikh/ynK6DjVttwjd2VbRYIjcS3f6Axcv4oSm3/12RlHQUUIFKjXzEdrCWJQWOYdXhRthWMYyFsRBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:06:19.799378Z"},"content_sha256":"3ab6c609c92a1dfaf5ad9771737ed1afe8d334b93510d2d524299d669cbe8e6b","schema_version":"1.0","event_id":"sha256:3ab6c609c92a1dfaf5ad9771737ed1afe8d334b93510d2d524299d669cbe8e6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:U6ULKT7PAYWKTW63XXRBKLGIO4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gas Rich Galaxies and the HI Mass Function","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Kambas, J.I. Davies, R.M. Smith, S. A. Salehi-Reyhani, S. M. Linder, S. Sabatini, W.J.G. de Blok","submitted_at":"2001-09-06T11:51:03Z","abstract_excerpt":"We have developed an automated cross-correlation technique to detect 21cm emission in sample spectra obtained from the HI Parkes All Sky Survey.\n The initial sample selection was the nearest spectra to 2435 low surface brightness galaxies in the catalogue of Morshidi-Esslinger et al. (1999).\n The galaxies were originally selected to have properties similar to Fornax cluster dE galaxies. As dE galaxies are generally gas poor it is not surprising that there were only 26 secure detections. All of the detected galaxies have very high values of $(M_{H}/L_{B})_{\\odot}$. Thus the HI selection of fain"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0109087","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":"2026-05-18T01:07:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CmaxLNgjLs4yhhkrTDPvlMeFmbsgoClp7lItCXWqWxBRQ1suWHyoO+unzAUdSzE67B1pdsP6ulEc+5/WBtPXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:06:19.800027Z"},"content_sha256":"8ca3f14a95abfbea831a4e2081bbdd42931fd3ceef63249a939fef28f13dd010","schema_version":"1.0","event_id":"sha256:8ca3f14a95abfbea831a4e2081bbdd42931fd3ceef63249a939fef28f13dd010"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U6ULKT7PAYWKTW63XXRBKLGIO4/bundle.json","state_url":"https://pith.science/pith/U6ULKT7PAYWKTW63XXRBKLGIO4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U6ULKT7PAYWKTW63XXRBKLGIO4/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":"2026-05-26T04:06:19Z","links":{"resolver":"https://pith.science/pith/U6ULKT7PAYWKTW63XXRBKLGIO4","bundle":"https://pith.science/pith/U6ULKT7PAYWKTW63XXRBKLGIO4/bundle.json","state":"https://pith.science/pith/U6ULKT7PAYWKTW63XXRBKLGIO4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U6ULKT7PAYWKTW63XXRBKLGIO4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:U6ULKT7PAYWKTW63XXRBKLGIO4","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":"a9e034493ca6389c8bd8dd5e089ad885bc51c0afefe43636058594eeb686c638","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-09-06T11:51:03Z","title_canon_sha256":"7676e1317b069b8811c06bf0c9e3ae37ed375c99017e62e314675abe8552a931"},"schema_version":"1.0","source":{"id":"astro-ph/0109087","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0109087","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0109087v1","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0109087","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"pith_short_12","alias_value":"U6ULKT7PAYWK","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"U6ULKT7PAYWKTW63","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"U6ULKT7P","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:8ca3f14a95abfbea831a4e2081bbdd42931fd3ceef63249a939fef28f13dd010","target":"graph","created_at":"2026-05-18T01:07:45Z","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 have developed an automated cross-correlation technique to detect 21cm emission in sample spectra obtained from the HI Parkes All Sky Survey.\n The initial sample selection was the nearest spectra to 2435 low surface brightness galaxies in the catalogue of Morshidi-Esslinger et al. (1999).\n The galaxies were originally selected to have properties similar to Fornax cluster dE galaxies. As dE galaxies are generally gas poor it is not surprising that there were only 26 secure detections. All of the detected galaxies have very high values of $(M_{H}/L_{B})_{\\odot}$. Thus the HI selection of fain","authors_text":"A. Kambas, J.I. Davies, R.M. Smith, S. A. Salehi-Reyhani, S. M. Linder, S. Sabatini, W.J.G. de Blok","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-09-06T11:51:03Z","title":"Gas Rich Galaxies and the HI Mass Function"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0109087","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":"sha256:3ab6c609c92a1dfaf5ad9771737ed1afe8d334b93510d2d524299d669cbe8e6b","target":"record","created_at":"2026-05-18T01:07:45Z","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":"a9e034493ca6389c8bd8dd5e089ad885bc51c0afefe43636058594eeb686c638","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-09-06T11:51:03Z","title_canon_sha256":"7676e1317b069b8811c06bf0c9e3ae37ed375c99017e62e314675abe8552a931"},"schema_version":"1.0","source":{"id":"astro-ph/0109087","kind":"arxiv","version":1}},"canonical_sha256":"a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7a8b54fef062ca9dbdbbde2152cc8770a9c5d6ee8727d5ee4869ccd06b31f90","first_computed_at":"2026-05-18T01:07:45.538697Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:45.538697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6pQK1ETeDR6/ctXWIsbanqkqApL0jRrG5P7Oh/qhCtK5l6RD3nRJxBXEDkmBcgAIsU0fPkkFiboFEKU/PItICw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:45.539341Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0109087","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ab6c609c92a1dfaf5ad9771737ed1afe8d334b93510d2d524299d669cbe8e6b","sha256:8ca3f14a95abfbea831a4e2081bbdd42931fd3ceef63249a939fef28f13dd010"],"state_sha256":"05bc194559be4c445a9b8a5692125e419be5e3ec1efa299617970799074d897e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Bw2h+c0FE2h0HxJgpZAsnQrXqZK5MvXTN0hWfBBeH3H3Dl+MtvYuhmrzKnd/IBhQFP8Dg3Z1sQ0AnU4gXBUAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:06:19.803216Z","bundle_sha256":"a76624290e985cc866223e205ab7b992d75923510496335fbf578f3bbf849569"}}