{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:34ZBCTKZ5A6452DKRLCM5CA262","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":"e63ed825aec1d4c6c7635e83f7ea118784bd51da6b3061a2cca7d5ae5c8c1ec9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-04T14:47:56Z","title_canon_sha256":"44347cc91baf12f82670e2fd07ea592ab8998e82688801f7556593d78a4fb788"},"schema_version":"1.0","source":{"id":"1502.01215","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.01215","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"arxiv_version","alias_value":"1502.01215v1","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.01215","created_at":"2026-05-18T02:27:57Z"},{"alias_kind":"pith_short_12","alias_value":"34ZBCTKZ5A64","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"34ZBCTKZ5A6452DK","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"34ZBCTKZ","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:da253efef22460700a6b2022fcef4b2d4673224bea001875509c3519833646d6","target":"graph","created_at":"2026-05-18T02:27:57Z","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 a proper-motion study on models of the dwarf spheroidal galaxy Sculptor, based on the predicted proper-motion accuracy of Gaia measurements. Gaia will measure proper motions of several hundreds of stars for a Sculptor-like system. Even with an uncertainty on the proper motion of order 1.5 times the size of an individual proper-motion value of ~10 mas/century, we find that it is possible to recover Sculptor's systemic proper motion at its distance of 79 kpc.","authors_text":"Amina Helmi, Maarten Breddels (Kapteyn Astronomical Institute, Shoko Jin, University of Groningen)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-04T14:47:56Z","title":"What can Gaia proper motions tell us about Milky Way dwarf galaxies?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.01215","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:c926fd8393e6279a11c0a4abba985af1862c03f7118fea574457024fecc70165","target":"record","created_at":"2026-05-18T02:27:57Z","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":"e63ed825aec1d4c6c7635e83f7ea118784bd51da6b3061a2cca7d5ae5c8c1ec9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-04T14:47:56Z","title_canon_sha256":"44347cc91baf12f82670e2fd07ea592ab8998e82688801f7556593d78a4fb788"},"schema_version":"1.0","source":{"id":"1502.01215","kind":"arxiv","version":1}},"canonical_sha256":"df32114d59e83dcee86a8ac4ce881af6b649fafe970db7f36f6d79d79dd58e5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df32114d59e83dcee86a8ac4ce881af6b649fafe970db7f36f6d79d79dd58e5d","first_computed_at":"2026-05-18T02:27:57.727176Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:57.727176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QpruH+z+skTei/FY0a6jXYZ9msYsFydy5wVEcqQP+i0mldZtu4zQhM2FBDhOGPHCJG3X/R+FdxDviJIPNWtNBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:57.727651Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.01215","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c926fd8393e6279a11c0a4abba985af1862c03f7118fea574457024fecc70165","sha256:da253efef22460700a6b2022fcef4b2d4673224bea001875509c3519833646d6"],"state_sha256":"39b8fe0bd4532b59cf57bd441f23649838814694e3c429880426eb39f57f1cf8"}