{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:HKZX43HVVBBWMZRJJBT5UU74XD","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":"ac3cdd45e0004606a8a8825a59864d3f4f837fd519b063683670726e9f3fe52c","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-20T12:06:54Z","title_canon_sha256":"add87a72fdd6931de8e9b4452ef65bf8527552fb454e4ab482a2e59563dd85d2"},"schema_version":"1.0","source":{"id":"2411.13247","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.13247","created_at":"2026-07-05T09:38:07Z"},{"alias_kind":"arxiv_version","alias_value":"2411.13247v1","created_at":"2026-07-05T09:38:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.13247","created_at":"2026-07-05T09:38:07Z"},{"alias_kind":"pith_short_12","alias_value":"HKZX43HVVBBW","created_at":"2026-07-05T09:38:07Z"},{"alias_kind":"pith_short_16","alias_value":"HKZX43HVVBBWMZRJ","created_at":"2026-07-05T09:38:07Z"},{"alias_kind":"pith_short_8","alias_value":"HKZX43HV","created_at":"2026-07-05T09:38:07Z"}],"graph_snapshots":[{"event_id":"sha256:458453c43b8a2ab5c8b1cdd660401215791d728b0288aa40b799dcff079a07c9","target":"graph","created_at":"2026-07-05T09:38:07Z","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/2411.13247/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Understanding the interstellar and potentially circumstellar extinction in the sight lines of classical T Tauri stars is an important ingredient for constructing reliable spectral energy distributions, which catalyze protoplanetary disk chemistry, for example. Therefore, some attempts of measuring $A_{V}$ toward individual stars have been made using partly different wavelength regimes and different underlying assumptions. We used strong lines of Ly{\\alpha} fluorescent H2 and derived the extinction based on the assumption of optically thin transitions. We investigated a sample of 72 classical T","authors_text":"B. Fuhrmeister, J. Campbell-White, J. Eisl\\\"offel, K. France, P. C. Schneider, Th. Sperling","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-20T12:06:54Z","title":"Measurement of interstellar extinction for classical T Tauri stars using far-UV H2 line fluxes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.13247","kind":"arxiv","version":1},"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":"sha256:4172abbc427d635d1f0fc99a1359ce2400322e296b4e1f79a33ff99a49f428f3","target":"record","created_at":"2026-07-05T09:38:07Z","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":"ac3cdd45e0004606a8a8825a59864d3f4f837fd519b063683670726e9f3fe52c","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-11-20T12:06:54Z","title_canon_sha256":"add87a72fdd6931de8e9b4452ef65bf8527552fb454e4ab482a2e59563dd85d2"},"schema_version":"1.0","source":{"id":"2411.13247","kind":"arxiv","version":1}},"canonical_sha256":"3ab37e6cf5a8436666294867da53fcb8fc0e7c31c3105ea8a6aa97b2a5a88099","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3ab37e6cf5a8436666294867da53fcb8fc0e7c31c3105ea8a6aa97b2a5a88099","first_computed_at":"2026-07-05T09:38:07.343799Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:38:07.343799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KxJCSP+QDaJORAcAvPastgul0ocW1TtRk4DYKq3oMQWZEJg1v7SZcDLW8GAggr5a6EScxOMISjGwaz0S3I4wAA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:38:07.344350Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.13247","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4172abbc427d635d1f0fc99a1359ce2400322e296b4e1f79a33ff99a49f428f3","sha256:458453c43b8a2ab5c8b1cdd660401215791d728b0288aa40b799dcff079a07c9"],"state_sha256":"dfeee68b232474dc33ab37569c63fc0d93913e5db93de4c9041b655af172d9d2"}