{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NJM5RFLLT7K7CCVZVRUY4RMNHT","short_pith_number":"pith:NJM5RFLL","canonical_record":{"source":{"id":"1902.00271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-01T11:01:42Z","cross_cats_sorted":[],"title_canon_sha256":"e87d22ff84c8957c7a8d3e09aa4b02c65eb6d7176fa6966bcc1ceec8016ee6a7","abstract_canon_sha256":"d66eaecea67d6e5342ba1a92c94cb68f9fc87b2e08876997ba0582a2684a4ca8"},"schema_version":"1.0"},"canonical_sha256":"6a59d8956b9fd5f10ab9ac698e458d3ceab81660564d6241e08a57092f4e065d","source":{"kind":"arxiv","id":"1902.00271","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00271","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00271v1","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00271","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"NJM5RFLLT7K7","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NJM5RFLLT7K7CCVZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NJM5RFLL","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NJM5RFLLT7K7CCVZVRUY4RMNHT","target":"record","payload":{"canonical_record":{"source":{"id":"1902.00271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-01T11:01:42Z","cross_cats_sorted":[],"title_canon_sha256":"e87d22ff84c8957c7a8d3e09aa4b02c65eb6d7176fa6966bcc1ceec8016ee6a7","abstract_canon_sha256":"d66eaecea67d6e5342ba1a92c94cb68f9fc87b2e08876997ba0582a2684a4ca8"},"schema_version":"1.0"},"canonical_sha256":"6a59d8956b9fd5f10ab9ac698e458d3ceab81660564d6241e08a57092f4e065d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:57.876924Z","signature_b64":"AtVpDbzeaxWWcpiMBwEmm24d4m8N//ORkNxFsab4YgQ5hSRJtkYaQiE1REt31QPPJf0eCGDJx0JY7WonCBiwCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a59d8956b9fd5f10ab9ac698e458d3ceab81660564d6241e08a57092f4e065d","last_reissued_at":"2026-05-17T23:54:57.876466Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:57.876466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.00271","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":"2026-05-17T23:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lseld5zleixuZUC5UOPW5/55tQvueszsRv6qQJMpEf+Us03cDWseFx/VS4IoDjhoWTXfWAe/TjcIr6CSF3U7DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:46:19.776499Z"},"content_sha256":"d32fad45c56afd1cd1eebabcdd0b722d470ec53ffa19de4b752a355310aafd56","schema_version":"1.0","event_id":"sha256:d32fad45c56afd1cd1eebabcdd0b722d470ec53ffa19de4b752a355310aafd56"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NJM5RFLLT7K7CCVZVRUY4RMNHT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The HST Large Programme on NGC 6752. I. Serendipitous discovery of a dwarf Galaxy in background","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(10) UA Tucson, 11) ( (1) INAF-OAPD, (11) Lunar, (2) J.M.Univ.Liverpool, (3) UCLA, (4) UBC Vancouver, (5) STScI, (6) UniPD, (7) Uni.Bonn, (8) Uni.Montreal, (9) UCSD, A. Bellini (5), A. Dieball (7), A. F. Marino (6), A. J. Burgasser (9), A. P. Milone (6), D. Apai (10, D. Bettoni (1), D. Nardiello (6), H. Richer (4), J. Anderson (5), L. R. Bedin (1), M. Libralato (5), M. Salaris (2), P. Bergeron (8), Planetary Laboratory AZ), R. M. Rich (3)","submitted_at":"2019-02-01T11:01:42Z","abstract_excerpt":"As part of a large Hubble Space Telescope investigation aiming at reaching the faintest stars in the Galactic globular cluster NGC 6752, an ACS/WFC field was the subject of deep optical observations reaching magnitudes as faint as V~30. In this field we report the discovery of Bedin I a dwarf spheroidal galaxy too faint and too close to the core of NGC 6752 for detection in earlier surveys. As it is of broad interest to complete the census of galaxies in the local Universe, in this Letter we provide the position of this new object along with preliminary assessments of its main param eters. Ass"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00271","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":"2026-05-17T23:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xcA2nekVU40j/T/WB9IBJKZor3dtc7nXafnKarSDWtrN9ckagiSH2HUUq0LDIeUNFxxbvoymNsL8OouXL/zlDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:46:19.777207Z"},"content_sha256":"f3f60aac8adcb2afae75b135891831770459bce6ed303055bb4361796a4228b4","schema_version":"1.0","event_id":"sha256:f3f60aac8adcb2afae75b135891831770459bce6ed303055bb4361796a4228b4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT/bundle.json","state_url":"https://pith.science/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT/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":"2026-05-31T20:46:19Z","links":{"resolver":"https://pith.science/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT","bundle":"https://pith.science/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT/bundle.json","state":"https://pith.science/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NJM5RFLLT7K7CCVZVRUY4RMNHT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NJM5RFLLT7K7CCVZVRUY4RMNHT","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":"d66eaecea67d6e5342ba1a92c94cb68f9fc87b2e08876997ba0582a2684a4ca8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-01T11:01:42Z","title_canon_sha256":"e87d22ff84c8957c7a8d3e09aa4b02c65eb6d7176fa6966bcc1ceec8016ee6a7"},"schema_version":"1.0","source":{"id":"1902.00271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00271","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00271v1","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00271","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"NJM5RFLLT7K7","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NJM5RFLLT7K7CCVZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NJM5RFLL","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:f3f60aac8adcb2afae75b135891831770459bce6ed303055bb4361796a4228b4","target":"graph","created_at":"2026-05-17T23:54:57Z","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":"As part of a large Hubble Space Telescope investigation aiming at reaching the faintest stars in the Galactic globular cluster NGC 6752, an ACS/WFC field was the subject of deep optical observations reaching magnitudes as faint as V~30. In this field we report the discovery of Bedin I a dwarf spheroidal galaxy too faint and too close to the core of NGC 6752 for detection in earlier surveys. As it is of broad interest to complete the census of galaxies in the local Universe, in this Letter we provide the position of this new object along with preliminary assessments of its main param eters. Ass","authors_text":"(10) UA Tucson, 11) ( (1) INAF-OAPD, (11) Lunar, (2) J.M.Univ.Liverpool, (3) UCLA, (4) UBC Vancouver, (5) STScI, (6) UniPD, (7) Uni.Bonn, (8) Uni.Montreal, (9) UCSD, A. Bellini (5), A. Dieball (7), A. F. Marino (6), A. J. Burgasser (9), A. P. Milone (6), D. Apai (10, D. Bettoni (1), D. Nardiello (6), H. Richer (4), J. Anderson (5), L. R. Bedin (1), M. Libralato (5), M. Salaris (2), P. Bergeron (8), Planetary Laboratory AZ), R. M. Rich (3)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-01T11:01:42Z","title":"The HST Large Programme on NGC 6752. I. Serendipitous discovery of a dwarf Galaxy in background"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00271","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:d32fad45c56afd1cd1eebabcdd0b722d470ec53ffa19de4b752a355310aafd56","target":"record","created_at":"2026-05-17T23:54:57Z","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":"d66eaecea67d6e5342ba1a92c94cb68f9fc87b2e08876997ba0582a2684a4ca8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-01T11:01:42Z","title_canon_sha256":"e87d22ff84c8957c7a8d3e09aa4b02c65eb6d7176fa6966bcc1ceec8016ee6a7"},"schema_version":"1.0","source":{"id":"1902.00271","kind":"arxiv","version":1}},"canonical_sha256":"6a59d8956b9fd5f10ab9ac698e458d3ceab81660564d6241e08a57092f4e065d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a59d8956b9fd5f10ab9ac698e458d3ceab81660564d6241e08a57092f4e065d","first_computed_at":"2026-05-17T23:54:57.876466Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:57.876466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AtVpDbzeaxWWcpiMBwEmm24d4m8N//ORkNxFsab4YgQ5hSRJtkYaQiE1REt31QPPJf0eCGDJx0JY7WonCBiwCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:57.876924Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.00271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d32fad45c56afd1cd1eebabcdd0b722d470ec53ffa19de4b752a355310aafd56","sha256:f3f60aac8adcb2afae75b135891831770459bce6ed303055bb4361796a4228b4"],"state_sha256":"597262c40717a8f4e7f3d414f72f77ee72b8c6f0e03743304c06454345956f2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WgdL+7PMnwR3vToMazTUHAOnZnhL+JKlo9+JCXsShop0N4rWNqV8HgDaMU8AsUSQT3ZKFeRMyu3TuvGTxgKFCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T20:46:19.781359Z","bundle_sha256":"cd8dac3aaffd53eae16ba45460249afb4ab626818ebec62df4853fc7639db0cd"}}