{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:43PN34PKMEBTMBUKEOY6Z63BI6","short_pith_number":"pith:43PN34PK","canonical_record":{"source":{"id":"1807.01335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-03T18:18:05Z","cross_cats_sorted":[],"title_canon_sha256":"17f6a35605de4315f7dbcd9e1e9942f8f86c3cbc74b294c984407173fa6ea5c7","abstract_canon_sha256":"383c839f2ba76180a7d0d41461b1aed81e80301257647b8e9080c442444f74bc"},"schema_version":"1.0"},"canonical_sha256":"e6deddf1ea610336068a23b1ecfb6147ae9e2cbccb33a9f2e8e29229c554712a","source":{"kind":"arxiv","id":"1807.01335","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01335","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01335v1","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01335","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"43PN34PKMEBT","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"43PN34PKMEBTMBUK","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"43PN34PK","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:43PN34PKMEBTMBUKEOY6Z63BI6","target":"record","payload":{"canonical_record":{"source":{"id":"1807.01335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-03T18:18:05Z","cross_cats_sorted":[],"title_canon_sha256":"17f6a35605de4315f7dbcd9e1e9942f8f86c3cbc74b294c984407173fa6ea5c7","abstract_canon_sha256":"383c839f2ba76180a7d0d41461b1aed81e80301257647b8e9080c442444f74bc"},"schema_version":"1.0"},"canonical_sha256":"e6deddf1ea610336068a23b1ecfb6147ae9e2cbccb33a9f2e8e29229c554712a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:04.784917Z","signature_b64":"USG3G9lSVXZd47t1PE7m77Z47OIDnql77NQF5W3236cq7hQ2AsTo1HYCblQkedWPkK/qaVvvsSauxiak1BUSAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6deddf1ea610336068a23b1ecfb6147ae9e2cbccb33a9f2e8e29229c554712a","last_reissued_at":"2026-05-18T00:03:04.784406Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:04.784406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.01335","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":"2026-05-18T00:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5jxpAjRTXXllWpuNO3VW3o7Spo/0RDkN24lNWop5f7Wg0VXtyx2An2urqWo9yh4nXrSz1htklx6MIdv8nkliBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:19:01.808302Z"},"content_sha256":"c4fb4f63b4ff2cb0267f3454d41cb75c5564e92309d284203e646e2014e790d9","schema_version":"1.0","event_id":"sha256:c4fb4f63b4ff2cb0267f3454d41cb75c5564e92309d284203e646e2014e790d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:43PN34PKMEBTMBUKEOY6Z63BI6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Common origin for Hercules-Aquila and Virgo Clouds in Gaia DR2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Iulia T. Simion, Sergey E. Koposov, Vasily Belokurov","submitted_at":"2018-07-03T18:18:05Z","abstract_excerpt":"We use a sample of ~350 RR Lyrae stars with radial velocities and Gaia DR2 proper motions to study orbital properties of the Hercules-Aquila Cloud (HAC) and Virgo Over-density (VOD). We demonstrate that both structures are dominated by stars on highly eccentric orbits, with peri-centres around ~1 kpc and apo-centres between 15 and 25 kpc from the Galactic centre. Given that the stars in the HAC and the VOD occupy very similar regions in the space spanned by integrals of motion, we conclude that these diffuse debris clouds are part of the same accretion event. More precisely, these inner halo s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01335","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":"2026-05-18T00:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"437Kq8QyW6AVYZlu8EglTqF7ZDQ7mRFmZ+ujs+GtVTwILyc31gCGcgTUHWjM5VvnJ3wTg2JYHrPwIrS1lUqrBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:19:01.808668Z"},"content_sha256":"5d87ba5b75be3bc08cbaf8d76264fa54d56483d6db206d4abb722cb83b9b948e","schema_version":"1.0","event_id":"sha256:5d87ba5b75be3bc08cbaf8d76264fa54d56483d6db206d4abb722cb83b9b948e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/43PN34PKMEBTMBUKEOY6Z63BI6/bundle.json","state_url":"https://pith.science/pith/43PN34PKMEBTMBUKEOY6Z63BI6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/43PN34PKMEBTMBUKEOY6Z63BI6/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":"2026-06-03T18:19:01Z","links":{"resolver":"https://pith.science/pith/43PN34PKMEBTMBUKEOY6Z63BI6","bundle":"https://pith.science/pith/43PN34PKMEBTMBUKEOY6Z63BI6/bundle.json","state":"https://pith.science/pith/43PN34PKMEBTMBUKEOY6Z63BI6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/43PN34PKMEBTMBUKEOY6Z63BI6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:43PN34PKMEBTMBUKEOY6Z63BI6","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":"383c839f2ba76180a7d0d41461b1aed81e80301257647b8e9080c442444f74bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-03T18:18:05Z","title_canon_sha256":"17f6a35605de4315f7dbcd9e1e9942f8f86c3cbc74b294c984407173fa6ea5c7"},"schema_version":"1.0","source":{"id":"1807.01335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01335","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01335v1","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01335","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"43PN34PKMEBT","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"43PN34PKMEBTMBUK","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"43PN34PK","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:5d87ba5b75be3bc08cbaf8d76264fa54d56483d6db206d4abb722cb83b9b948e","target":"graph","created_at":"2026-05-18T00:03:04Z","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 use a sample of ~350 RR Lyrae stars with radial velocities and Gaia DR2 proper motions to study orbital properties of the Hercules-Aquila Cloud (HAC) and Virgo Over-density (VOD). We demonstrate that both structures are dominated by stars on highly eccentric orbits, with peri-centres around ~1 kpc and apo-centres between 15 and 25 kpc from the Galactic centre. Given that the stars in the HAC and the VOD occupy very similar regions in the space spanned by integrals of motion, we conclude that these diffuse debris clouds are part of the same accretion event. More precisely, these inner halo s","authors_text":"Iulia T. Simion, Sergey E. Koposov, Vasily Belokurov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-03T18:18:05Z","title":"Common origin for Hercules-Aquila and Virgo Clouds in Gaia DR2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01335","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:c4fb4f63b4ff2cb0267f3454d41cb75c5564e92309d284203e646e2014e790d9","target":"record","created_at":"2026-05-18T00:03:04Z","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":"383c839f2ba76180a7d0d41461b1aed81e80301257647b8e9080c442444f74bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-03T18:18:05Z","title_canon_sha256":"17f6a35605de4315f7dbcd9e1e9942f8f86c3cbc74b294c984407173fa6ea5c7"},"schema_version":"1.0","source":{"id":"1807.01335","kind":"arxiv","version":1}},"canonical_sha256":"e6deddf1ea610336068a23b1ecfb6147ae9e2cbccb33a9f2e8e29229c554712a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6deddf1ea610336068a23b1ecfb6147ae9e2cbccb33a9f2e8e29229c554712a","first_computed_at":"2026-05-18T00:03:04.784406Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:04.784406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"USG3G9lSVXZd47t1PE7m77Z47OIDnql77NQF5W3236cq7hQ2AsTo1HYCblQkedWPkK/qaVvvsSauxiak1BUSAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:04.784917Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.01335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4fb4f63b4ff2cb0267f3454d41cb75c5564e92309d284203e646e2014e790d9","sha256:5d87ba5b75be3bc08cbaf8d76264fa54d56483d6db206d4abb722cb83b9b948e"],"state_sha256":"08188b2b87fae5924be8f303e5a7f854417aef3a499664fc414e713d32572d30"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WTlXKgQsTaDLlsVpbV662j+IdhzbYhBM+ksCsMesfPZ72n1OM3x/rA+TK5gJUmytgNn4B6jnerCaJUN/0p4rDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T18:19:01.810566Z","bundle_sha256":"7db357b040920c43540eca908d24cfae005ac639f0b5a3a9bacdeddd23092096"}}