{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:UETO4TRGJHFPQCXGKCSG3UGR5C","short_pith_number":"pith:UETO4TRG","canonical_record":{"source":{"id":"2501.04772","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-01-08T19:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"aad4a927c1c593000d3300433d5f31c9e245af28cf93388dcbe85a81cbcc2e36","abstract_canon_sha256":"8bf2f022dbd0c2ddada5b1ec24d653d764d1b56592ad9cb43c70dacc1aba101b"},"schema_version":"1.0"},"canonical_sha256":"a126ee4e2649caf80ae650a46dd0d1e8b2365f92f8fc90ee2b135f9a63a13019","source":{"kind":"arxiv","id":"2501.04772","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.04772","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"arxiv_version","alias_value":"2501.04772v2","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.04772","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"pith_short_12","alias_value":"UETO4TRGJHFP","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"pith_short_16","alias_value":"UETO4TRGJHFPQCXG","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"pith_short_8","alias_value":"UETO4TRG","created_at":"2026-07-05T10:36:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:UETO4TRGJHFPQCXGKCSG3UGR5C","target":"record","payload":{"canonical_record":{"source":{"id":"2501.04772","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-01-08T19:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"aad4a927c1c593000d3300433d5f31c9e245af28cf93388dcbe85a81cbcc2e36","abstract_canon_sha256":"8bf2f022dbd0c2ddada5b1ec24d653d764d1b56592ad9cb43c70dacc1aba101b"},"schema_version":"1.0"},"canonical_sha256":"a126ee4e2649caf80ae650a46dd0d1e8b2365f92f8fc90ee2b135f9a63a13019","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:36:34.231230Z","signature_b64":"engEQolxWFRLzHPJFqU2ymj/UFCyXJAw3kwLekFpgdWyORwfRjLnCDeOR/xg4yZ2FGbvsE7f2cdIxmJRDIahBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a126ee4e2649caf80ae650a46dd0d1e8b2365f92f8fc90ee2b135f9a63a13019","last_reissued_at":"2026-07-05T10:36:34.230268Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:36:34.230268Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.04772","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:36:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cOI91HZoyNdb3a5aDNAYY0JHmq5tPFSMRkAyU314ZgnoTi+uzLNO9CK59eIAqPDILq04kvbiLAfvSOs2DHakCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T22:02:31.292076Z"},"content_sha256":"b85daee46006132207af7139c546046e3b95ba5d9a3f690888639b97c9788434","schema_version":"1.0","event_id":"sha256:b85daee46006132207af7139c546046e3b95ba5d9a3f690888639b97c9788434"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:UETO4TRGJHFPQCXGKCSG3UGR5C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deep Photometric Observations of Ultra-Faint Milky Way Satellites Centaurus I and Eridanus IV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexander P. Ji, Alex H. Riley, Alfredo Zenteno, Amandine Doliva-Dolinsky, Andrew B. Pace, Astha Chaturvedi, Bur\\c{c}in Mutlu-Pakdil, Clara E. Mart\\'inez-V\\'azquez, Clecio R. Bom (DELVE Collaboration), David J. Sand, Denija Crnojevic, Guilherme Limberg, Gustavo E. Medina, Joanna D. Sakowska, Julio A. Carballo-Bello, Laurella Marin, Mahdieh Navabi, Mairead E. Heiger, Quinn O. Casey, Sasha N. Campana, Ting S. Li, William Cerny","submitted_at":"2025-01-08T19:00:01Z","abstract_excerpt":"We present deep Magellan$+$Megacam imaging of Centaurus I (Cen I) and Eridanus IV (Eri IV), two recently discovered Milky Way ultra-faint satellites. Our data reach $\\sim2-3$ magnitudes deeper than the discovery data from the DECam Local Volume Exploration (DELVE) Survey. We use these data to constrain their distances, structural properties (e.g., half-light radii, ellipticity, and position angle), and luminosities. We investigate whether these systems show signs of tidal disturbance, and identify new potential member stars using Gaia EDR3. Our deep color-magnitude diagrams show that Cen I and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.04772","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2501.04772/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:36:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6sK421abtDRc9nRrAcNk9RIQeaDWLmDYe6EzuybKwElMMoBDpNnXs0NwUT+75Oh9GQt4/EuG9aNzimxT1hbhAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T22:02:31.293920Z"},"content_sha256":"77a6915eb760a2a4aa627eed76a74d38253aaf32eab841322aa2df1e4526b7e7","schema_version":"1.0","event_id":"sha256:77a6915eb760a2a4aa627eed76a74d38253aaf32eab841322aa2df1e4526b7e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UETO4TRGJHFPQCXGKCSG3UGR5C/bundle.json","state_url":"https://pith.science/pith/UETO4TRGJHFPQCXGKCSG3UGR5C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UETO4TRGJHFPQCXGKCSG3UGR5C/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":"2026-08-09T22:02:31Z","links":{"resolver":"https://pith.science/pith/UETO4TRGJHFPQCXGKCSG3UGR5C","bundle":"https://pith.science/pith/UETO4TRGJHFPQCXGKCSG3UGR5C/bundle.json","state":"https://pith.science/pith/UETO4TRGJHFPQCXGKCSG3UGR5C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UETO4TRGJHFPQCXGKCSG3UGR5C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:UETO4TRGJHFPQCXGKCSG3UGR5C","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":"8bf2f022dbd0c2ddada5b1ec24d653d764d1b56592ad9cb43c70dacc1aba101b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-01-08T19:00:01Z","title_canon_sha256":"aad4a927c1c593000d3300433d5f31c9e245af28cf93388dcbe85a81cbcc2e36"},"schema_version":"1.0","source":{"id":"2501.04772","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.04772","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"arxiv_version","alias_value":"2501.04772v2","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.04772","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"pith_short_12","alias_value":"UETO4TRGJHFP","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"pith_short_16","alias_value":"UETO4TRGJHFPQCXG","created_at":"2026-07-05T10:36:34Z"},{"alias_kind":"pith_short_8","alias_value":"UETO4TRG","created_at":"2026-07-05T10:36:34Z"}],"graph_snapshots":[{"event_id":"sha256:77a6915eb760a2a4aa627eed76a74d38253aaf32eab841322aa2df1e4526b7e7","target":"graph","created_at":"2026-07-05T10:36:34Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2501.04772/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present deep Magellan$+$Megacam imaging of Centaurus I (Cen I) and Eridanus IV (Eri IV), two recently discovered Milky Way ultra-faint satellites. Our data reach $\\sim2-3$ magnitudes deeper than the discovery data from the DECam Local Volume Exploration (DELVE) Survey. We use these data to constrain their distances, structural properties (e.g., half-light radii, ellipticity, and position angle), and luminosities. We investigate whether these systems show signs of tidal disturbance, and identify new potential member stars using Gaia EDR3. Our deep color-magnitude diagrams show that Cen I and","authors_text":"Alexander P. Ji, Alex H. Riley, Alfredo Zenteno, Amandine Doliva-Dolinsky, Andrew B. Pace, Astha Chaturvedi, Bur\\c{c}in Mutlu-Pakdil, Clara E. Mart\\'inez-V\\'azquez, Clecio R. Bom (DELVE Collaboration), David J. Sand, Denija Crnojevic, Guilherme Limberg, Gustavo E. Medina, Joanna D. Sakowska, Julio A. Carballo-Bello, Laurella Marin, Mahdieh Navabi, Mairead E. Heiger, Quinn O. Casey, Sasha N. Campana, Ting S. Li, William Cerny","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-01-08T19:00:01Z","title":"Deep Photometric Observations of Ultra-Faint Milky Way Satellites Centaurus I and Eridanus IV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.04772","kind":"arxiv","version":2},"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:b85daee46006132207af7139c546046e3b95ba5d9a3f690888639b97c9788434","target":"record","created_at":"2026-07-05T10:36:34Z","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":"8bf2f022dbd0c2ddada5b1ec24d653d764d1b56592ad9cb43c70dacc1aba101b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-01-08T19:00:01Z","title_canon_sha256":"aad4a927c1c593000d3300433d5f31c9e245af28cf93388dcbe85a81cbcc2e36"},"schema_version":"1.0","source":{"id":"2501.04772","kind":"arxiv","version":2}},"canonical_sha256":"a126ee4e2649caf80ae650a46dd0d1e8b2365f92f8fc90ee2b135f9a63a13019","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a126ee4e2649caf80ae650a46dd0d1e8b2365f92f8fc90ee2b135f9a63a13019","first_computed_at":"2026-07-05T10:36:34.230268Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:36:34.230268Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"engEQolxWFRLzHPJFqU2ymj/UFCyXJAw3kwLekFpgdWyORwfRjLnCDeOR/xg4yZ2FGbvsE7f2cdIxmJRDIahBA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:36:34.231230Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.04772","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b85daee46006132207af7139c546046e3b95ba5d9a3f690888639b97c9788434","sha256:77a6915eb760a2a4aa627eed76a74d38253aaf32eab841322aa2df1e4526b7e7"],"state_sha256":"ce5c1c2194c941d268d54b5ad9cf66bf582cbf36bf474953515107c99e6e75be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N3NyQ8GC856yX6CaPJcMhUwqNePAzNZEZ+mA3rGa+HeDji1ipI7uR5VTOkAXPmIVMl6w4BcK09lUlCC9ucC1BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T22:02:31.299807Z","bundle_sha256":"572261ef6fcab959b8436f6e16090200d770b6c2d82273b8770ad6069946a0ca"}}