{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:SO4FLYGKTPSHVV5VC47N5QTXYO","short_pith_number":"pith:SO4FLYGK","canonical_record":{"source":{"id":"astro-ph/0510168","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-10-06T11:01:32Z","cross_cats_sorted":[],"title_canon_sha256":"6c21f306c446982f5732a59b34e79b1eafe7463ce8379f592c3d9a9bad75996f","abstract_canon_sha256":"cc083699194d4d13de0a1f67011052214c977b3f02189153953d80de8af91dd9"},"schema_version":"1.0"},"canonical_sha256":"93b855e0ca9be47ad7b5173edec277c3815dcea5ca68ad91d494b5118801dacf","source":{"kind":"arxiv","id":"astro-ph/0510168","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0510168","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0510168v1","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0510168","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"SO4FLYGKTPSH","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"SO4FLYGKTPSHVV5V","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"SO4FLYGK","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:SO4FLYGKTPSHVV5VC47N5QTXYO","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0510168","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-10-06T11:01:32Z","cross_cats_sorted":[],"title_canon_sha256":"6c21f306c446982f5732a59b34e79b1eafe7463ce8379f592c3d9a9bad75996f","abstract_canon_sha256":"cc083699194d4d13de0a1f67011052214c977b3f02189153953d80de8af91dd9"},"schema_version":"1.0"},"canonical_sha256":"93b855e0ca9be47ad7b5173edec277c3815dcea5ca68ad91d494b5118801dacf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:25.810712Z","signature_b64":"l6HNT5yTqbf3TWsZgQPhxr5zKEm7XxKILivLVXU8sob88bZUlvlLmz3g5aNC3zheEuLEBEvfvRREwK/3ERgyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93b855e0ca9be47ad7b5173edec277c3815dcea5ca68ad91d494b5118801dacf","last_reissued_at":"2026-05-18T01:07:25.810074Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:25.810074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0510168","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":"2026-05-18T01:07:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XVlW/8fBaJNxGnGmAlgZQBO26xArQrpiP9y18ne42iElNNw8YLb2ETciKVnNklp/FptRLkkM2J82qvfQHs4OAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:50:38.145626Z"},"content_sha256":"130f2487c67de15c746501ce48579867f3a3cb43a48b6723135ff3d60fafe4c3","schema_version":"1.0","event_id":"sha256:130f2487c67de15c746501ce48579867f3a3cb43a48b6723135ff3d60fafe4c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:SO4FLYGKTPSHVV5VC47N5QTXYO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Distances to six Cepheids in the LMC cluster NGC1866 from the near-IR surface-brightness method","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Universidad de Concepcion, (3) Observatoire Midi-Pyrenees, (4) McDonald Observatory), J. Storm (1), M. Gomez (2) ((1) Astrophysikalisches Institut Potsdam, P. Fouque (3), T.G. Barnes III (4), W. Gieren (2)","submitted_at":"2005-10-06T11:01:32Z","abstract_excerpt":"We derive individual distances to six Cepheids in the young populous star cluster NGC1866 in the Large Magellanic Cloud employing the near-IR surface brightness technique. With six stars available at the exact same distance we can directly measure the intrinsic uncertainty of the method. We find a standard deviation of 0.11 mag, two to three times larger than the error estimates and more in line with the estimates from Bayesian statistical analysis by Barnes et al. (2005). Using all six distance estimates we determine an unweighted mean cluster distance of 18.30+-0.05. The observations indicat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0510168","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":"2026-05-18T01:07:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+VNexfgzwxWHS7+WFZmMPRKfHVQYALRX/pAiMYk539P7nDStdCt3vlZdfwQYBiX4+dFI3hg12JuD7tonCboiBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:50:38.145977Z"},"content_sha256":"1b0eb412e8576c869ef180604193085fc2d86472ff202a4788e1c2b2a448242d","schema_version":"1.0","event_id":"sha256:1b0eb412e8576c869ef180604193085fc2d86472ff202a4788e1c2b2a448242d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SO4FLYGKTPSHVV5VC47N5QTXYO/bundle.json","state_url":"https://pith.science/pith/SO4FLYGKTPSHVV5VC47N5QTXYO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SO4FLYGKTPSHVV5VC47N5QTXYO/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":"2026-05-28T12:50:38Z","links":{"resolver":"https://pith.science/pith/SO4FLYGKTPSHVV5VC47N5QTXYO","bundle":"https://pith.science/pith/SO4FLYGKTPSHVV5VC47N5QTXYO/bundle.json","state":"https://pith.science/pith/SO4FLYGKTPSHVV5VC47N5QTXYO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SO4FLYGKTPSHVV5VC47N5QTXYO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:SO4FLYGKTPSHVV5VC47N5QTXYO","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":"cc083699194d4d13de0a1f67011052214c977b3f02189153953d80de8af91dd9","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-10-06T11:01:32Z","title_canon_sha256":"6c21f306c446982f5732a59b34e79b1eafe7463ce8379f592c3d9a9bad75996f"},"schema_version":"1.0","source":{"id":"astro-ph/0510168","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0510168","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0510168v1","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0510168","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"SO4FLYGKTPSH","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"SO4FLYGKTPSHVV5V","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"SO4FLYGK","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:1b0eb412e8576c869ef180604193085fc2d86472ff202a4788e1c2b2a448242d","target":"graph","created_at":"2026-05-18T01:07:25Z","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 derive individual distances to six Cepheids in the young populous star cluster NGC1866 in the Large Magellanic Cloud employing the near-IR surface brightness technique. With six stars available at the exact same distance we can directly measure the intrinsic uncertainty of the method. We find a standard deviation of 0.11 mag, two to three times larger than the error estimates and more in line with the estimates from Bayesian statistical analysis by Barnes et al. (2005). Using all six distance estimates we determine an unweighted mean cluster distance of 18.30+-0.05. The observations indicat","authors_text":"(2) Universidad de Concepcion, (3) Observatoire Midi-Pyrenees, (4) McDonald Observatory), J. Storm (1), M. Gomez (2) ((1) Astrophysikalisches Institut Potsdam, P. Fouque (3), T.G. Barnes III (4), W. Gieren (2)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-10-06T11:01:32Z","title":"Distances to six Cepheids in the LMC cluster NGC1866 from the near-IR surface-brightness method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0510168","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":"sha256:130f2487c67de15c746501ce48579867f3a3cb43a48b6723135ff3d60fafe4c3","target":"record","created_at":"2026-05-18T01:07:25Z","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":"cc083699194d4d13de0a1f67011052214c977b3f02189153953d80de8af91dd9","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-10-06T11:01:32Z","title_canon_sha256":"6c21f306c446982f5732a59b34e79b1eafe7463ce8379f592c3d9a9bad75996f"},"schema_version":"1.0","source":{"id":"astro-ph/0510168","kind":"arxiv","version":1}},"canonical_sha256":"93b855e0ca9be47ad7b5173edec277c3815dcea5ca68ad91d494b5118801dacf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93b855e0ca9be47ad7b5173edec277c3815dcea5ca68ad91d494b5118801dacf","first_computed_at":"2026-05-18T01:07:25.810074Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:25.810074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l6HNT5yTqbf3TWsZgQPhxr5zKEm7XxKILivLVXU8sob88bZUlvlLmz3g5aNC3zheEuLEBEvfvRREwK/3ERgyAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:25.810712Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0510168","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:130f2487c67de15c746501ce48579867f3a3cb43a48b6723135ff3d60fafe4c3","sha256:1b0eb412e8576c869ef180604193085fc2d86472ff202a4788e1c2b2a448242d"],"state_sha256":"d0859a88d1f51b2dd0e1e94288889c5c3c93dbd3aebae17176dd6113bf3b96db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NBF0I4AGZC9LRTkQLuS+8bNuY1QxUxnU5bhs0LogdzYroIK8qdbkAvl/frGUeTtOg0RtzVBHy1JGlEdnyF9nAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:50:38.147981Z","bundle_sha256":"ea8ac84288263c3654597b4f123c661e61966171573b367a27c23e7f74601fe4"}}