{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:47NQFTW5N2GBAKJEGJI5HA4GMM","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":"e15b5bc6505d4bd7c4c01662986d8a5692d5c5f95abc45cc69047f949562ccb9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-03T10:03:30Z","title_canon_sha256":"3e59f2fec5db56e6d001eda82700e25223c16af5b249cdcce99b54100c661b87"},"schema_version":"1.0","source":{"id":"1301.0410","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.0410","created_at":"2026-05-18T01:52:21Z"},{"alias_kind":"arxiv_version","alias_value":"1301.0410v1","created_at":"2026-05-18T01:52:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.0410","created_at":"2026-05-18T01:52:21Z"},{"alias_kind":"pith_short_12","alias_value":"47NQFTW5N2GB","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"47NQFTW5N2GBAKJE","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"47NQFTW5","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:07618a2eb633262e83e59b7be9568062be9bb5d559c4a636855d59350c78ac0d","target":"graph","created_at":"2026-05-18T01:52:21Z","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"},"paper":{"abstract_excerpt":"We have analyzed a broad-band optical and near-infrared spectrum of FU Tau A, a presumed young brown dwarf in the Taurus star forming region that has intrigued both theorists and observers by its over-luminosity in the HR diagram with respect to standard pre-main sequence evolutionary models. The new data, obtained with the X-Shooter spectrograph at the Very Large Telescope, include an unprecedented wealth of information on stellar parameters and simultaneously observed accretion and outflow indicators for FU Tau A. We present the first measurements of gravity (log g = 3.5 +- 0.5), radial velo","authors_text":"(2) INAF / OA Capodimonte, (3) Dublin IAS, 4), (4) INAF / OA Arcetri), A. Natta (3, A. Scholz (3), B.Stelzer (1), E.Covino (2) ((1) INAF / OA Palermo, J. M. Alcala (2), S. Randich (4)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-03T10:03:30Z","title":"X-Shooter spectroscopy of FU Tau A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.0410","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":"sha256:76c2c4925808eaa3ed3721cb9996beca373d86e90e7ab6b0066ff0e96f0210ff","target":"record","created_at":"2026-05-18T01:52:21Z","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":"e15b5bc6505d4bd7c4c01662986d8a5692d5c5f95abc45cc69047f949562ccb9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-03T10:03:30Z","title_canon_sha256":"3e59f2fec5db56e6d001eda82700e25223c16af5b249cdcce99b54100c661b87"},"schema_version":"1.0","source":{"id":"1301.0410","kind":"arxiv","version":1}},"canonical_sha256":"e7db02cedd6e8c1029243251d3838663312fdc8da92e717eb9c2a198a032dfcc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7db02cedd6e8c1029243251d3838663312fdc8da92e717eb9c2a198a032dfcc","first_computed_at":"2026-05-18T01:52:21.948915Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:21.948915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nJr/NeEaEtJhMmJp2wNKJBcZ2a0utdCIgRAJ38jzD1lw2Q5z9DZVZBjYpSPPCFnkh8377fSQ+kdDcD2Y66/mBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:21.949451Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.0410","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76c2c4925808eaa3ed3721cb9996beca373d86e90e7ab6b0066ff0e96f0210ff","sha256:07618a2eb633262e83e59b7be9568062be9bb5d559c4a636855d59350c78ac0d"],"state_sha256":"bd7f8d60e07ac87fcdc1d6e59aef39d65e5879ee555eb3ed44cce12367b258d6"}