{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:S7QIR5WTVDYPJOARC7B2EZFF7I","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":"00bfd16b9db83c785342eee7ad7c3f62a9e5c8723b31e0580bb1943e55c05900","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T18:00:03Z","title_canon_sha256":"6f7a9951ea2c2d63480bfc8ce37baec80aec75b5492dc0ae4a633a4bc27ff6cc"},"schema_version":"1.0","source":{"id":"1910.12879","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.12879","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"arxiv_version","alias_value":"1910.12879v2","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.12879","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_12","alias_value":"S7QIR5WTVDYP","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_16","alias_value":"S7QIR5WTVDYPJOAR","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_8","alias_value":"S7QIR5WT","created_at":"2026-07-05T00:31:27Z"}],"graph_snapshots":[{"event_id":"sha256:f6089d8ffb9dab2359728dec03d27d11ab39684d153cdd9910651db9a9d31c07","target":"graph","created_at":"2026-07-05T00:31:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1910.12879/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With a central surface brightness of $\\mu_0=29.3$ mag. per sq. arcsec, and half-light radius of $r_{\\rm half}=3.1^{+0.9}_{-1.1}$~kpc, Andromeda XIX (And XIX) is an extremely diffuse satellite of Andromeda. We present spectra for $\\sim100$ red giant branch stars in this galaxy, plus 16 stars in a nearby stellar stream. With this exquisite dataset, we re-derive the properties of And XIX, measuring a systemic velocity of $v_r=-109.0\\pm1.6$ km/s and a velocity dispersion of $\\sigma_v = 7.8^{+1.7}_{-1.5}$ km/s (higher than derived in our previous work). We marginally detect a velocity gradient alon","authors_text":"Erik J. Tollerud, Janet Preston, Karoline M. Gilbert, Michelle L. M. Collins, Nicolas F. Martin, R. Michael Rich, Rodrigo A. Ibata, Scott C. Chapman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T18:00:03Z","title":"A detailed study of Andromeda XIX, an extreme local analogue of ultra diffuse galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.12879","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":"sha256:22f7101da741497dc334d648c16bf6b924b14c9f2d01c85acf9486c4c5d0c99f","target":"record","created_at":"2026-07-05T00:31:27Z","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":"00bfd16b9db83c785342eee7ad7c3f62a9e5c8723b31e0580bb1943e55c05900","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T18:00:03Z","title_canon_sha256":"6f7a9951ea2c2d63480bfc8ce37baec80aec75b5492dc0ae4a633a4bc27ff6cc"},"schema_version":"1.0","source":{"id":"1910.12879","kind":"arxiv","version":2}},"canonical_sha256":"97e088f6d3a8f0f4b81117c3a264a5fa0a056ea8268302a10f1dbe9af748cad0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"97e088f6d3a8f0f4b81117c3a264a5fa0a056ea8268302a10f1dbe9af748cad0","first_computed_at":"2026-07-05T00:31:27.558848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:31:27.558848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qB80Y4FVocianI1tebZkZ++vw48PJiN9R7YMTWH+AWsZl/cuIvCVF0+9O2zXOIUS+E1pxc8HvNoIPkqmrqkjDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:31:27.559374Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.12879","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22f7101da741497dc334d648c16bf6b924b14c9f2d01c85acf9486c4c5d0c99f","sha256:f6089d8ffb9dab2359728dec03d27d11ab39684d153cdd9910651db9a9d31c07"],"state_sha256":"dd342a3d3a42f27acc7eacc8cecd5dcbf96c1e3f4cd7fd2fa2c0efe28b539295"}