{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:TYO2I4MXXFR4KXONXXXXBBXSEN","short_pith_number":"pith:TYO2I4MX","schema_version":"1.0","canonical_sha256":"9e1da47197b963c55dcdbdef7086f223758fd88517ad672fe9fcc917812632ec","source":{"kind":"arxiv","id":"astro-ph/0201017","version":2},"attestation_state":"computed","paper":{"title":"The stellar velocity dispersion of the lens galaxy in MG2016+112 at z=1.004","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Astronomy, Caltech, Caltech), L.V.E. Koopmans (1), T. Treu (2) ((1) Theoretical Astrophysics","submitted_at":"2002-01-02T19:01:34Z","abstract_excerpt":"We present a direct measurement of the stellar velocity dispersion of the early-type lens galaxy D in the system MG2016+112 (z=1.004), determined from a spectrum obtained with the Echelle Spectrograph and Imager (ESI) on the W.M. Keck-II Telescope, as part of the Lenses Structure and Dynamics (LSD) Survey. We find a velocity dispersion of sigma_ap=304+-27 km/s inside an effective circular aperture with a radius of 0.65'', corresponding to a central velocity dispersion of sigma=328+-32 km/s. From a Hubble Space Telescope F160W-band image, we measure the effective radius and effective surface br"},"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/0201017","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-01-02T19:01:34Z","cross_cats_sorted":[],"title_canon_sha256":"8663a6759b529f3893eabc3aa6b38d21ef1027a8cdd50c65c82c45a3ba750e39","abstract_canon_sha256":"2077b045d1f3905256959be856bea3c36bb87764e2bc79d1a534a5f6945bf286"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:29:11.762079Z","signature_b64":"jDRHLxRj+9EoyXPXJ4VgDajsqT4nhePQJQlJbUtqU5j3kjASyALsWB3AWzPDBXOPOpvzHB5mxvso/zd4LXy9Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e1da47197b963c55dcdbdef7086f223758fd88517ad672fe9fcc917812632ec","last_reissued_at":"2026-07-04T16:29:11.761700Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:29:11.761700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The stellar velocity dispersion of the lens galaxy in MG2016+112 at z=1.004","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Astronomy, Caltech, Caltech), L.V.E. Koopmans (1), T. Treu (2) ((1) Theoretical Astrophysics","submitted_at":"2002-01-02T19:01:34Z","abstract_excerpt":"We present a direct measurement of the stellar velocity dispersion of the early-type lens galaxy D in the system MG2016+112 (z=1.004), determined from a spectrum obtained with the Echelle Spectrograph and Imager (ESI) on the W.M. Keck-II Telescope, as part of the Lenses Structure and Dynamics (LSD) Survey. We find a velocity dispersion of sigma_ap=304+-27 km/s inside an effective circular aperture with a radius of 0.65'', corresponding to a central velocity dispersion of sigma=328+-32 km/s. From a Hubble Space Telescope F160W-band image, we measure the effective radius and effective surface br"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0201017","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/0201017/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/0201017","created_at":"2026-07-04T16:29:11.761756+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0201017v2","created_at":"2026-07-04T16:29:11.761756+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0201017","created_at":"2026-07-04T16:29:11.761756+00:00"},{"alias_kind":"pith_short_12","alias_value":"TYO2I4MXXFR4","created_at":"2026-07-04T16:29:11.761756+00:00"},{"alias_kind":"pith_short_16","alias_value":"TYO2I4MXXFR4KXON","created_at":"2026-07-04T16:29:11.761756+00:00"},{"alias_kind":"pith_short_8","alias_value":"TYO2I4MX","created_at":"2026-07-04T16:29:11.761756+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/TYO2I4MXXFR4KXONXXXXBBXSEN","json":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN.json","graph_json":"https://pith.science/api/pith-number/TYO2I4MXXFR4KXONXXXXBBXSEN/graph.json","events_json":"https://pith.science/api/pith-number/TYO2I4MXXFR4KXONXXXXBBXSEN/events.json","paper":"https://pith.science/paper/TYO2I4MX"},"agent_actions":{"view_html":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN","download_json":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN.json","view_paper":"https://pith.science/paper/TYO2I4MX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0201017&json=true","fetch_graph":"https://pith.science/api/pith-number/TYO2I4MXXFR4KXONXXXXBBXSEN/graph.json","fetch_events":"https://pith.science/api/pith-number/TYO2I4MXXFR4KXONXXXXBBXSEN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN/action/storage_attestation","attest_author":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN/action/author_attestation","sign_citation":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN/action/citation_signature","submit_replication":"https://pith.science/pith/TYO2I4MXXFR4KXONXXXXBBXSEN/action/replication_record"}},"created_at":"2026-07-04T16:29:11.761756+00:00","updated_at":"2026-07-04T16:29:11.761756+00:00"}