{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:NGJH5YIOT6S2E2N4AAIS5LBKSE","short_pith_number":"pith:NGJH5YIO","schema_version":"1.0","canonical_sha256":"69927ee10e9fa5a269bc00112eac2a911f92502fdebc84aaf4c0eac1165dd4f8","source":{"kind":"arxiv","id":"astro-ph/0211295","version":1},"attestation_state":"computed","paper":{"title":"Strong Absorption-line Systems at Low Redshift: MgII and Damped Lyman Alpha","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Daniel B. Nestor, David Turnshek (Pittsburgh), Sandhya Rao","submitted_at":"2002-11-13T17:37:51Z","abstract_excerpt":"We detail a powerful indirect method for the study of damped Lyman alpha systems (DLAs) at low redshift. We increase the probability of finding a low-redshift DLA to nearly 50% by targeting QSOs that are known to have strong low-redshift MgII and FeII absorption lines in their spectra. We are using Sloan Digital Sky Survey QSO spectra complemented by a survey we are conducting at the MMT to study the metal-line systems. The Hubble Space Telescope is being used to confirm low-redshift DLAs. In addition, we are imaging low-redshift DLA galaxies with several ground-based telescopes to directly st"},"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/0211295","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-11-13T17:37:51Z","cross_cats_sorted":[],"title_canon_sha256":"759f24682edd19e175fbe1edee71908f39f8e768fc4873569eb15b1dc240df26","abstract_canon_sha256":"50cd723b1c9ca46056100d992bbf4b2cc68d55de121d92468e755483712901cb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:56.943985Z","signature_b64":"FqeGZpabVtnovQcJY/I2Ju7yw8SnmcMtgbu/AFJYYlJ5LMBLS4O6VCsetmlFpgqy2NA5s+Zmns0/9wJmM3nfAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69927ee10e9fa5a269bc00112eac2a911f92502fdebc84aaf4c0eac1165dd4f8","last_reissued_at":"2026-05-18T01:21:56.943122Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:56.943122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Strong Absorption-line Systems at Low Redshift: MgII and Damped Lyman Alpha","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Daniel B. Nestor, David Turnshek (Pittsburgh), Sandhya Rao","submitted_at":"2002-11-13T17:37:51Z","abstract_excerpt":"We detail a powerful indirect method for the study of damped Lyman alpha systems (DLAs) at low redshift. We increase the probability of finding a low-redshift DLA to nearly 50% by targeting QSOs that are known to have strong low-redshift MgII and FeII absorption lines in their spectra. We are using Sloan Digital Sky Survey QSO spectra complemented by a survey we are conducting at the MMT to study the metal-line systems. The Hubble Space Telescope is being used to confirm low-redshift DLAs. In addition, we are imaging low-redshift DLA galaxies with several ground-based telescopes to directly st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0211295","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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/0211295","created_at":"2026-05-18T01:21:56.943269+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0211295v1","created_at":"2026-05-18T01:21:56.943269+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0211295","created_at":"2026-05-18T01:21:56.943269+00:00"},{"alias_kind":"pith_short_12","alias_value":"NGJH5YIOT6S2","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_16","alias_value":"NGJH5YIOT6S2E2N4","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_8","alias_value":"NGJH5YIO","created_at":"2026-05-18T12:25:51.375804+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/NGJH5YIOT6S2E2N4AAIS5LBKSE","json":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE.json","graph_json":"https://pith.science/api/pith-number/NGJH5YIOT6S2E2N4AAIS5LBKSE/graph.json","events_json":"https://pith.science/api/pith-number/NGJH5YIOT6S2E2N4AAIS5LBKSE/events.json","paper":"https://pith.science/paper/NGJH5YIO"},"agent_actions":{"view_html":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE","download_json":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE.json","view_paper":"https://pith.science/paper/NGJH5YIO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0211295&json=true","fetch_graph":"https://pith.science/api/pith-number/NGJH5YIOT6S2E2N4AAIS5LBKSE/graph.json","fetch_events":"https://pith.science/api/pith-number/NGJH5YIOT6S2E2N4AAIS5LBKSE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE/action/storage_attestation","attest_author":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE/action/author_attestation","sign_citation":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE/action/citation_signature","submit_replication":"https://pith.science/pith/NGJH5YIOT6S2E2N4AAIS5LBKSE/action/replication_record"}},"created_at":"2026-05-18T01:21:56.943269+00:00","updated_at":"2026-05-18T01:21:56.943269+00:00"}