{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:W75XXE4DSQLZJUHIKQGK4TBCCG","short_pith_number":"pith:W75XXE4D","canonical_record":{"source":{"id":"1104.2593","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-13T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"e167a4675f9776ee473c2d27d2920ec6890b0c662e31e3a52ff8b76e66252566","abstract_canon_sha256":"e9b9c4948b8e5435ce887d998decdd95c664130f909ec35240e53544b77e5188"},"schema_version":"1.0"},"canonical_sha256":"b7fb7b9383941794d0e8540cae4c221186cb2c65a6494022b338102009ab9889","source":{"kind":"arxiv","id":"1104.2593","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.2593","created_at":"2026-05-18T02:02:29Z"},{"alias_kind":"arxiv_version","alias_value":"1104.2593v1","created_at":"2026-05-18T02:02:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.2593","created_at":"2026-05-18T02:02:29Z"},{"alias_kind":"pith_short_12","alias_value":"W75XXE4DSQLZ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W75XXE4DSQLZJUHI","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W75XXE4D","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:W75XXE4DSQLZJUHIKQGK4TBCCG","target":"record","payload":{"canonical_record":{"source":{"id":"1104.2593","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-13T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"e167a4675f9776ee473c2d27d2920ec6890b0c662e31e3a52ff8b76e66252566","abstract_canon_sha256":"e9b9c4948b8e5435ce887d998decdd95c664130f909ec35240e53544b77e5188"},"schema_version":"1.0"},"canonical_sha256":"b7fb7b9383941794d0e8540cae4c221186cb2c65a6494022b338102009ab9889","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:29.657014Z","signature_b64":"oLW78TzQnS1aRb+D+TAeQe3dBIanF94NB+6k6gXV9UmVnoMUGyc9m1ikukSAWU6Ea+bXErdP5GDkFqplGo8iBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7fb7b9383941794d0e8540cae4c221186cb2c65a6494022b338102009ab9889","last_reissued_at":"2026-05-18T02:02:29.656209Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:29.656209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.2593","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":"2026-05-18T02:02:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3XJh4a69vFgOLOnZSX3cvewqM/wWvzfYKcDAXLQuaJ0sTNkbEPdC5kZLQpnFxL9dNyN8t+ixbQhzoONXJNj7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:05:31.954297Z"},"content_sha256":"47d094f6cbe72512714a8965c5bf634b7aab9167bff2afc027573abc3f651e3c","schema_version":"1.0","event_id":"sha256:47d094f6cbe72512714a8965c5bf634b7aab9167bff2afc027573abc3f651e3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:W75XXE4DSQLZJUHIKQGK4TBCCG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatially Resolved Kinematics of an Ultra-Compact Dwarf Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"2), (2) Astronomisches Rechen-Institut, (3) ESO/Chile, (4) School of Mathematics, (5) Departamento de Astronom\\'ia y Astrof\\'isica, E. K. Grebel (2), H. Baumgardt (4), L. Infante (5) ((1) ESO/Garching, M. Hilker (1), M. J. Frank (1, Physics, Pontificia Universidad Cat\\'olica de Chile), S. Mieske (3), University of Queensland, Zentrum f\\\"ur Astronomie der Universit\\\"at Heidelberg","submitted_at":"2011-04-13T20:00:00Z","abstract_excerpt":"We present the internal kinematics of UCD3, the brightest known ultra-compact dwarf galaxy (UCD) in the Fornax cluster, making this the first UCD with spatially resolved spectroscopy. Our study is based on seeing-limited observations obtained with the ARGUS Integral Field Unit of the VLT/FLAMES spectrograph under excellent seeing conditions (0.5 - 0.67 arcsec FWHM). The velocity field of UCD3 shows the signature of weak rotation, comparable to that found in massive globular clusters. Its velocity dispersion profile is fully consistent with an isotropic velocity distribution and the assumption "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.2593","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":"2026-05-18T02:02:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lQPwhNe/A5rvQ3sdrGrKx3wr5w7A3twL0LLl+6wzI6GMznOiooQJse5VbHLxNWWx+2cGVLbGLkgnZIXODziIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:05:31.954707Z"},"content_sha256":"9f0f50fc4171aea18c1e551d62033065dcf3c93221bae7bda54c571cf009d937","schema_version":"1.0","event_id":"sha256:9f0f50fc4171aea18c1e551d62033065dcf3c93221bae7bda54c571cf009d937"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W75XXE4DSQLZJUHIKQGK4TBCCG/bundle.json","state_url":"https://pith.science/pith/W75XXE4DSQLZJUHIKQGK4TBCCG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W75XXE4DSQLZJUHIKQGK4TBCCG/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":"2026-06-02T06:05:31Z","links":{"resolver":"https://pith.science/pith/W75XXE4DSQLZJUHIKQGK4TBCCG","bundle":"https://pith.science/pith/W75XXE4DSQLZJUHIKQGK4TBCCG/bundle.json","state":"https://pith.science/pith/W75XXE4DSQLZJUHIKQGK4TBCCG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W75XXE4DSQLZJUHIKQGK4TBCCG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:W75XXE4DSQLZJUHIKQGK4TBCCG","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":"e9b9c4948b8e5435ce887d998decdd95c664130f909ec35240e53544b77e5188","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-13T20:00:00Z","title_canon_sha256":"e167a4675f9776ee473c2d27d2920ec6890b0c662e31e3a52ff8b76e66252566"},"schema_version":"1.0","source":{"id":"1104.2593","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.2593","created_at":"2026-05-18T02:02:29Z"},{"alias_kind":"arxiv_version","alias_value":"1104.2593v1","created_at":"2026-05-18T02:02:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.2593","created_at":"2026-05-18T02:02:29Z"},{"alias_kind":"pith_short_12","alias_value":"W75XXE4DSQLZ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W75XXE4DSQLZJUHI","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W75XXE4D","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:9f0f50fc4171aea18c1e551d62033065dcf3c93221bae7bda54c571cf009d937","target":"graph","created_at":"2026-05-18T02:02:29Z","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 internal kinematics of UCD3, the brightest known ultra-compact dwarf galaxy (UCD) in the Fornax cluster, making this the first UCD with spatially resolved spectroscopy. Our study is based on seeing-limited observations obtained with the ARGUS Integral Field Unit of the VLT/FLAMES spectrograph under excellent seeing conditions (0.5 - 0.67 arcsec FWHM). The velocity field of UCD3 shows the signature of weak rotation, comparable to that found in massive globular clusters. Its velocity dispersion profile is fully consistent with an isotropic velocity distribution and the assumption ","authors_text":"2), (2) Astronomisches Rechen-Institut, (3) ESO/Chile, (4) School of Mathematics, (5) Departamento de Astronom\\'ia y Astrof\\'isica, E. K. Grebel (2), H. Baumgardt (4), L. Infante (5) ((1) ESO/Garching, M. Hilker (1), M. J. Frank (1, Physics, Pontificia Universidad Cat\\'olica de Chile), S. Mieske (3), University of Queensland, Zentrum f\\\"ur Astronomie der Universit\\\"at Heidelberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-13T20:00:00Z","title":"Spatially Resolved Kinematics of an Ultra-Compact Dwarf Galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.2593","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":"sha256:47d094f6cbe72512714a8965c5bf634b7aab9167bff2afc027573abc3f651e3c","target":"record","created_at":"2026-05-18T02:02:29Z","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":"e9b9c4948b8e5435ce887d998decdd95c664130f909ec35240e53544b77e5188","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-13T20:00:00Z","title_canon_sha256":"e167a4675f9776ee473c2d27d2920ec6890b0c662e31e3a52ff8b76e66252566"},"schema_version":"1.0","source":{"id":"1104.2593","kind":"arxiv","version":1}},"canonical_sha256":"b7fb7b9383941794d0e8540cae4c221186cb2c65a6494022b338102009ab9889","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7fb7b9383941794d0e8540cae4c221186cb2c65a6494022b338102009ab9889","first_computed_at":"2026-05-18T02:02:29.656209Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:29.656209Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oLW78TzQnS1aRb+D+TAeQe3dBIanF94NB+6k6gXV9UmVnoMUGyc9m1ikukSAWU6Ea+bXErdP5GDkFqplGo8iBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:29.657014Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.2593","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:47d094f6cbe72512714a8965c5bf634b7aab9167bff2afc027573abc3f651e3c","sha256:9f0f50fc4171aea18c1e551d62033065dcf3c93221bae7bda54c571cf009d937"],"state_sha256":"91016a9533a560d01f98ca4442310eb77f2b1d29f040db1b7007948e3700e618"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6LwYu5fglvAgholf+g1NOuH2W5pnAFe/i0tEPsOAXSVNLlIwOOgOkZcEQvMn4W4A43BfMHvFRwDDhflSuQWWCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:05:31.956595Z","bundle_sha256":"a702073b226b4ffb113e6c42ac7eebedf7077c932485970057ebd4faf44c2b71"}}