{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2001:GZRVOG5BYMDFE3QRGYXTE4R6MS","short_pith_number":"pith:GZRVOG5B","schema_version":"1.0","canonical_sha256":"3663571ba1c306526e11362f32723e64bfcc8a846f8aa90970e65eecdfeb8093","source":{"kind":"arxiv","id":"astro-ph/0109450","version":2},"attestation_state":"computed","paper":{"title":"Dark Matter in Dwarf Spheroidals II: Observations and Modelling of Draco","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"G. Gilmore (Cambridge), J.T. Kleyna (Cambridge), M.I. Wilkinson (Cambridge), N.W. Evans (Oxford)","submitted_at":"2001-09-25T16:37:09Z","abstract_excerpt":"We present stellar radial velocity data for the Draco dwarf spheroidal galaxy obtained using the AF2/WYFFOS instrument combination on the William Herschel Telescope. Our dataset consists of 186 member stars, 159 of which have good quality velocities, extending to a magnitude V=19.5 with a mean velocity precision of 2 km/s. We find statistically strong evidence of a rising velocity dispersion consistent with a dark matter halo with gently rising rotation curve. There is a <2 sigma signature of rotation about the long axis, inconsistent with tidal disruption being the source of the rising disper"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"astro-ph/0109450","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-09-25T16:37:09Z","cross_cats_sorted":[],"title_canon_sha256":"3aed84e32069e11688b77ee5d2fc8ef67e38d92b814eef29170c17d5941f4bdb","abstract_canon_sha256":"597d64e5a25c1968cc9da2e3f00f89cdc7d528134da08961fdde3888f09a42f9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:24:10.717172Z","signature_b64":"XgECdCOTuXn29lO2vkUqfjb+FOr6a8xgIbOqquJQpIpdhmss7YJdEBCUTr7bp/nJl7MlF51nU0DLf7iyQSx0Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3663571ba1c306526e11362f32723e64bfcc8a846f8aa90970e65eecdfeb8093","last_reissued_at":"2026-07-04T16:24:10.716702Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:24:10.716702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dark Matter in Dwarf Spheroidals II: Observations and Modelling of Draco","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"G. Gilmore (Cambridge), J.T. Kleyna (Cambridge), M.I. Wilkinson (Cambridge), N.W. Evans (Oxford)","submitted_at":"2001-09-25T16:37:09Z","abstract_excerpt":"We present stellar radial velocity data for the Draco dwarf spheroidal galaxy obtained using the AF2/WYFFOS instrument combination on the William Herschel Telescope. Our dataset consists of 186 member stars, 159 of which have good quality velocities, extending to a magnitude V=19.5 with a mean velocity precision of 2 km/s. We find statistically strong evidence of a rising velocity dispersion consistent with a dark matter halo with gently rising rotation curve. There is a <2 sigma signature of rotation about the long axis, inconsistent with tidal disruption being the source of the rising disper"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0109450","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0109450/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0109450","created_at":"2026-07-04T16:24:10.716759+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0109450v2","created_at":"2026-07-04T16:24:10.716759+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0109450","created_at":"2026-07-04T16:24:10.716759+00:00"},{"alias_kind":"pith_short_12","alias_value":"GZRVOG5BYMDF","created_at":"2026-07-04T16:24:10.716759+00:00"},{"alias_kind":"pith_short_16","alias_value":"GZRVOG5BYMDFE3QR","created_at":"2026-07-04T16:24:10.716759+00:00"},{"alias_kind":"pith_short_8","alias_value":"GZRVOG5B","created_at":"2026-07-04T16:24:10.716759+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS","json":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS.json","graph_json":"https://pith.science/api/pith-number/GZRVOG5BYMDFE3QRGYXTE4R6MS/graph.json","events_json":"https://pith.science/api/pith-number/GZRVOG5BYMDFE3QRGYXTE4R6MS/events.json","paper":"https://pith.science/paper/GZRVOG5B"},"agent_actions":{"view_html":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS","download_json":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS.json","view_paper":"https://pith.science/paper/GZRVOG5B","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0109450&json=true","fetch_graph":"https://pith.science/api/pith-number/GZRVOG5BYMDFE3QRGYXTE4R6MS/graph.json","fetch_events":"https://pith.science/api/pith-number/GZRVOG5BYMDFE3QRGYXTE4R6MS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS/action/storage_attestation","attest_author":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS/action/author_attestation","sign_citation":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS/action/citation_signature","submit_replication":"https://pith.science/pith/GZRVOG5BYMDFE3QRGYXTE4R6MS/action/replication_record"}},"created_at":"2026-07-04T16:24:10.716759+00:00","updated_at":"2026-07-04T16:24:10.716759+00:00"}