{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BDWBC6IGYUEG5YURLODY67IG53","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":"a4c7ee3527c660710f82c55ecee1e085a43bfbcc60ede94dcf6e7a6342f54e9b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-16T08:46:47Z","title_canon_sha256":"a59094cdd1e2244ac5273054215f3bb244248539379185c086ad0effb628effc"},"schema_version":"1.0","source":{"id":"1512.05090","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05090","created_at":"2026-05-18T01:23:22Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05090v1","created_at":"2026-05-18T01:23:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05090","created_at":"2026-05-18T01:23:22Z"},{"alias_kind":"pith_short_12","alias_value":"BDWBC6IGYUEG","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BDWBC6IGYUEG5YUR","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BDWBC6IG","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:9c48bb1fd6225ae6a02d13eca48d5a570eb0e6b6b3ff629afe2edf1faa23bfcc","target":"graph","created_at":"2026-05-18T01:23:22Z","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":"Using LAMOST spectroscopic data, we find a strong signal of a comoving group of stars in the constellation of Draco. The group, observed near the apocenter of its orbit, is 2.6 kpc from the Sun with a metallicity of -0.64 dex. The system is observed as a streaming population of unknown provenance with mass of about 2.1E4 solar masses and an absolute V band magnitude of about -3.6. Its high metallicity, diffuse physical structure, and eccentric orbit may indicate that the progenitor satellite was a globular cluster rather than a dwarf galaxy or an open cluster.","authors_text":"John J. Vickers, Martin C. Smith, Yonghui Hou, Yong Zhang, Yuefei Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-16T08:46:47Z","title":"LAMOST 1: A Disrupted Satellite in the Constellation Draco"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05090","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":"sha256:73f55908beef2fd87dacbe15f65535271fc31d797dc4d82bd232667e3188055d","target":"record","created_at":"2026-05-18T01:23:22Z","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":"a4c7ee3527c660710f82c55ecee1e085a43bfbcc60ede94dcf6e7a6342f54e9b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-16T08:46:47Z","title_canon_sha256":"a59094cdd1e2244ac5273054215f3bb244248539379185c086ad0effb628effc"},"schema_version":"1.0","source":{"id":"1512.05090","kind":"arxiv","version":1}},"canonical_sha256":"08ec117906c5086ee2915b878f7d06eedc233d17605f5ac85b49b6af313e1a8e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08ec117906c5086ee2915b878f7d06eedc233d17605f5ac85b49b6af313e1a8e","first_computed_at":"2026-05-18T01:23:22.488147Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:22.488147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C+yUcAdCvtP8Q2qg4I96Zy23HQlXULH1361INyEDFGslEFaj5PJhEXhOvgvVTVyK1InmEg7gRo4pVD9/t+PvCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:22.488780Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.05090","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73f55908beef2fd87dacbe15f65535271fc31d797dc4d82bd232667e3188055d","sha256:9c48bb1fd6225ae6a02d13eca48d5a570eb0e6b6b3ff629afe2edf1faa23bfcc"],"state_sha256":"357603e37b51fc233d92f55341977bf12417a7796259768f65f6ffc798600fd7"}