{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:QPVRDWS2I7GL4ZUMTHMHMWD3FY","short_pith_number":"pith:QPVRDWS2","schema_version":"1.0","canonical_sha256":"83eb11da5a47ccbe668c99d876587b2e0df2b6578a25ac0527e03d4bc5209180","source":{"kind":"arxiv","id":"2303.03843","version":1},"attestation_state":"computed","paper":{"title":"Empirical Determination of the Lithium 6707.856 {\\AA} Wavelength in Young Stars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"\\'Agnes K\\'osp\\'al, Amelia Bayo, Antonio Frasca, Aurora Sicilia-Aguilar, Barbara Ercolano, Brunella Nisini, Carlo F. Manara, Connor Robinson, Davide Fedele, Elisabetta Rigliaco, Jorge Filipe Gameiro, Justyn Campbell-White, Karina Mauc\\'o, Laura Venuti, Louise D. Nielsen, Lukasz Tychoniec, Manuele Gangi, Michal Siwak, Min Fang, Monika G. Petr-Gotzens, P. Christian Schneider, P\\'eter \\'Abrah\\'am, Rik Claes","submitted_at":"2023-03-07T12:17:16Z","abstract_excerpt":"Absorption features in stellar atmospheres are often used to calibrate photocentric velocities for kinematic analysis of further spectral lines. The Li feature at $\\sim$ 6708 {\\AA} is commonly used, especially in the case of young stellar objects for which it is one of the strongest absorption lines. However, this is a complex line comprising two isotope fine-structure doublets. We empirically measure the wavelength of this Li feature in a sample of young stars from the PENELLOPE/VLT programme (using X-Shooter, UVES and ESPRESSO data) as well as HARPS data. For 51 targets, we fit 314 individua"},"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":"2303.03843","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-03-07T12:17:16Z","cross_cats_sorted":[],"title_canon_sha256":"7c635158ac4f4d08c14d8fc57682124730d4a0845d59daa34565c8e213b90992","abstract_canon_sha256":"8f91820851564baa6213c9e62c1282c509dee7a75dd62014ee40807389e0afde"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:08:22.462245Z","signature_b64":"QePLZPsqOV/jYnQu7OvH+TMixwcBV0/JeV0CQEzb7sq4XJFucirz7OxvVbd3e8yfkzlYFiwVHTdd6chgz5ZzCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83eb11da5a47ccbe668c99d876587b2e0df2b6578a25ac0527e03d4bc5209180","last_reissued_at":"2026-07-05T06:08:22.461823Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:08:22.461823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Empirical Determination of the Lithium 6707.856 {\\AA} Wavelength in Young Stars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"\\'Agnes K\\'osp\\'al, Amelia Bayo, Antonio Frasca, Aurora Sicilia-Aguilar, Barbara Ercolano, Brunella Nisini, Carlo F. Manara, Connor Robinson, Davide Fedele, Elisabetta Rigliaco, Jorge Filipe Gameiro, Justyn Campbell-White, Karina Mauc\\'o, Laura Venuti, Louise D. Nielsen, Lukasz Tychoniec, Manuele Gangi, Michal Siwak, Min Fang, Monika G. Petr-Gotzens, P. Christian Schneider, P\\'eter \\'Abrah\\'am, Rik Claes","submitted_at":"2023-03-07T12:17:16Z","abstract_excerpt":"Absorption features in stellar atmospheres are often used to calibrate photocentric velocities for kinematic analysis of further spectral lines. The Li feature at $\\sim$ 6708 {\\AA} is commonly used, especially in the case of young stellar objects for which it is one of the strongest absorption lines. However, this is a complex line comprising two isotope fine-structure doublets. We empirically measure the wavelength of this Li feature in a sample of young stars from the PENELLOPE/VLT programme (using X-Shooter, UVES and ESPRESSO data) as well as HARPS data. For 51 targets, we fit 314 individua"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.03843","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2303.03843/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":"2303.03843","created_at":"2026-07-05T06:08:22.461878+00:00"},{"alias_kind":"arxiv_version","alias_value":"2303.03843v1","created_at":"2026-07-05T06:08:22.461878+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.03843","created_at":"2026-07-05T06:08:22.461878+00:00"},{"alias_kind":"pith_short_12","alias_value":"QPVRDWS2I7GL","created_at":"2026-07-05T06:08:22.461878+00:00"},{"alias_kind":"pith_short_16","alias_value":"QPVRDWS2I7GL4ZUM","created_at":"2026-07-05T06:08:22.461878+00:00"},{"alias_kind":"pith_short_8","alias_value":"QPVRDWS2","created_at":"2026-07-05T06:08:22.461878+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/QPVRDWS2I7GL4ZUMTHMHMWD3FY","json":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY.json","graph_json":"https://pith.science/api/pith-number/QPVRDWS2I7GL4ZUMTHMHMWD3FY/graph.json","events_json":"https://pith.science/api/pith-number/QPVRDWS2I7GL4ZUMTHMHMWD3FY/events.json","paper":"https://pith.science/paper/QPVRDWS2"},"agent_actions":{"view_html":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY","download_json":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY.json","view_paper":"https://pith.science/paper/QPVRDWS2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2303.03843&json=true","fetch_graph":"https://pith.science/api/pith-number/QPVRDWS2I7GL4ZUMTHMHMWD3FY/graph.json","fetch_events":"https://pith.science/api/pith-number/QPVRDWS2I7GL4ZUMTHMHMWD3FY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY/action/storage_attestation","attest_author":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY/action/author_attestation","sign_citation":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY/action/citation_signature","submit_replication":"https://pith.science/pith/QPVRDWS2I7GL4ZUMTHMHMWD3FY/action/replication_record"}},"created_at":"2026-07-05T06:08:22.461878+00:00","updated_at":"2026-07-05T06:08:22.461878+00:00"}