{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZVS37Z7RDUPGY6YRY4MGCGQSUN","short_pith_number":"pith:ZVS37Z7R","canonical_record":{"source":{"id":"1809.04108","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-11T18:55:18Z","cross_cats_sorted":[],"title_canon_sha256":"c11668c4b6a33f3f4b58057166cff1e79ab77db090391f04a168c178f3acfd24","abstract_canon_sha256":"f5f948a8c3acd8127ba0f264a8a96ed92547e1136e3f57556d909d458d640de4"},"schema_version":"1.0"},"canonical_sha256":"cd65bfe7f11d1e6c7b11c718611a12a357a63c222ce2fcb25bf663ed59314f15","source":{"kind":"arxiv","id":"1809.04108","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.04108","created_at":"2026-05-17T23:54:16Z"},{"alias_kind":"arxiv_version","alias_value":"1809.04108v2","created_at":"2026-05-17T23:54:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.04108","created_at":"2026-05-17T23:54:16Z"},{"alias_kind":"pith_short_12","alias_value":"ZVS37Z7RDUPG","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZVS37Z7RDUPGY6YR","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZVS37Z7R","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZVS37Z7RDUPGY6YRY4MGCGQSUN","target":"record","payload":{"canonical_record":{"source":{"id":"1809.04108","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-11T18:55:18Z","cross_cats_sorted":[],"title_canon_sha256":"c11668c4b6a33f3f4b58057166cff1e79ab77db090391f04a168c178f3acfd24","abstract_canon_sha256":"f5f948a8c3acd8127ba0f264a8a96ed92547e1136e3f57556d909d458d640de4"},"schema_version":"1.0"},"canonical_sha256":"cd65bfe7f11d1e6c7b11c718611a12a357a63c222ce2fcb25bf663ed59314f15","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:16.097635Z","signature_b64":"gks43mhO9PDLf/Ftsq0BqAEC0X2X71h/FZP0ueButL7wzSEMINv0p2mG0Ye7vM6HMJtcLl73jJds0bBjL58WCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd65bfe7f11d1e6c7b11c718611a12a357a63c222ce2fcb25bf663ed59314f15","last_reissued_at":"2026-05-17T23:54:16.097155Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:16.097155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.04108","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":"2026-05-17T23:54:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iKHvrVx0Vwfr8eZjPDRNyyph09GFWBooE/ghnvOwhKEal+RA2JrmPqIMRUXuooLAJo5Ia0GYm80TZX/hEufdAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T20:18:41.570304Z"},"content_sha256":"0829cb87ece82de63c4cbe11134eb4471df709613abb8dc8ba8c0e25e6ec69b4","schema_version":"1.0","event_id":"sha256:0829cb87ece82de63c4cbe11134eb4471df709613abb8dc8ba8c0e25e6ec69b4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZVS37Z7RDUPGY6YRY4MGCGQSUN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rediscovering the Tidal Tails of NGC 288 with Gaia DR2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jason A. S. Hunt, Jeremy J. Webb, Natalie Price-Jones, Raymond Carlberg, Shaziana Kaderali","submitted_at":"2018-09-11T18:55:18Z","abstract_excerpt":"NGC 288 is a Galactic globular cluster having observed extra tidal structure, without confirmed tidal tails. $Gaia$ DR2 provides photometric and astrometric data for many of the stars in NGC 288 and its extra tidal structure. To compare with $Gaia$ data, we simulate an $N$-body model of a star cluster with the same orbit as NGC 288 in a Milky Way potential. The simulation shows that the cluster forms tidal tails that are compressed along the cluster's orbit when it is at apocentre and are expected to be a diffuse bipolar structure. In this letter, we present a comparison between the simulation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.04108","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":""},"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":"2026-05-17T23:54:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/+QtE2/pnppNU1hQJIb5cWdgKROy/BFl+KVya0mROZV6m8LPdlGSbnRe0F2XiIyd1GVFGVAQyi+Zi1uDvKHOCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T20:18:41.571050Z"},"content_sha256":"f19e79c6a5b7d6f15f67e1b2fa9a95f12249cc25c1e832b9fcf865c5a31613c2","schema_version":"1.0","event_id":"sha256:f19e79c6a5b7d6f15f67e1b2fa9a95f12249cc25c1e832b9fcf865c5a31613c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN/bundle.json","state_url":"https://pith.science/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN/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":"2026-06-10T20:18:41Z","links":{"resolver":"https://pith.science/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN","bundle":"https://pith.science/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN/bundle.json","state":"https://pith.science/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZVS37Z7RDUPGY6YRY4MGCGQSUN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZVS37Z7RDUPGY6YRY4MGCGQSUN","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":"f5f948a8c3acd8127ba0f264a8a96ed92547e1136e3f57556d909d458d640de4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-11T18:55:18Z","title_canon_sha256":"c11668c4b6a33f3f4b58057166cff1e79ab77db090391f04a168c178f3acfd24"},"schema_version":"1.0","source":{"id":"1809.04108","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.04108","created_at":"2026-05-17T23:54:16Z"},{"alias_kind":"arxiv_version","alias_value":"1809.04108v2","created_at":"2026-05-17T23:54:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.04108","created_at":"2026-05-17T23:54:16Z"},{"alias_kind":"pith_short_12","alias_value":"ZVS37Z7RDUPG","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZVS37Z7RDUPGY6YR","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZVS37Z7R","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:f19e79c6a5b7d6f15f67e1b2fa9a95f12249cc25c1e832b9fcf865c5a31613c2","target":"graph","created_at":"2026-05-17T23:54:16Z","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":"NGC 288 is a Galactic globular cluster having observed extra tidal structure, without confirmed tidal tails. $Gaia$ DR2 provides photometric and astrometric data for many of the stars in NGC 288 and its extra tidal structure. To compare with $Gaia$ data, we simulate an $N$-body model of a star cluster with the same orbit as NGC 288 in a Milky Way potential. The simulation shows that the cluster forms tidal tails that are compressed along the cluster's orbit when it is at apocentre and are expected to be a diffuse bipolar structure. In this letter, we present a comparison between the simulation","authors_text":"Jason A. S. Hunt, Jeremy J. Webb, Natalie Price-Jones, Raymond Carlberg, Shaziana Kaderali","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-11T18:55:18Z","title":"Rediscovering the Tidal Tails of NGC 288 with Gaia DR2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.04108","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":"sha256:0829cb87ece82de63c4cbe11134eb4471df709613abb8dc8ba8c0e25e6ec69b4","target":"record","created_at":"2026-05-17T23:54:16Z","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":"f5f948a8c3acd8127ba0f264a8a96ed92547e1136e3f57556d909d458d640de4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-11T18:55:18Z","title_canon_sha256":"c11668c4b6a33f3f4b58057166cff1e79ab77db090391f04a168c178f3acfd24"},"schema_version":"1.0","source":{"id":"1809.04108","kind":"arxiv","version":2}},"canonical_sha256":"cd65bfe7f11d1e6c7b11c718611a12a357a63c222ce2fcb25bf663ed59314f15","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd65bfe7f11d1e6c7b11c718611a12a357a63c222ce2fcb25bf663ed59314f15","first_computed_at":"2026-05-17T23:54:16.097155Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:16.097155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gks43mhO9PDLf/Ftsq0BqAEC0X2X71h/FZP0ueButL7wzSEMINv0p2mG0Ye7vM6HMJtcLl73jJds0bBjL58WCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:16.097635Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.04108","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0829cb87ece82de63c4cbe11134eb4471df709613abb8dc8ba8c0e25e6ec69b4","sha256:f19e79c6a5b7d6f15f67e1b2fa9a95f12249cc25c1e832b9fcf865c5a31613c2"],"state_sha256":"19c693ce28231b23a6a6be8cd09aa3169214515059c70b575e803a02805ea498"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YKFlcEaQSbi+HG+JISg5BPtVIZuUekEauDWUBav0dXhFrUZmWrOdVQzyg6075pbSkEuEGBdWvD0KzmQB/unfAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T20:18:41.575075Z","bundle_sha256":"dcab4c6f6f95429e5fcdc98e299b78096bd294413f0f64df4344061730acd300"}}