{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5L4QAMFOUGOHGG7N75TQFRCLLW","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":"f55454bc3db15a80fa7f8a0a4c089e7f64b60ad016198abd4c526d1a083ad468","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-13T04:41:28Z","title_canon_sha256":"d1d13521ca33683eee836940192ff9db48f3b8575fb9728ee2f28aa1fa4cc1e7"},"schema_version":"1.0","source":{"id":"1308.2753","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2753","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2753v1","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2753","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"5L4QAMFOUGOH","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5L4QAMFOUGOHGG7N","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5L4QAMFO","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:c38ab984c5928da9c03ca75dd1c8d37d27f189a69926e311d3d9e995ece49cfe","target":"graph","created_at":"2026-05-18T01:48:16Z","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 report two new dramatically dusty main sequence stars: HD 131488 (A1V) and HD 121191 (A8V). HD 131488 is found to have substantial amounts of dust in its terrestrial planet zone (L_IR/L_bol~4x10^-3), cooler dust further out in its planetary system, and an unusual mid-infrared spectral feature. HD 121191 shows terrestrial planet zone dust (L_IR/L_bol~2.3x10^-3), hints of cooler dust, and shares the unusual mid-infrared spectral shape identified in HD 131488. These two stars belong to sub-groups of the Scorpius-Centaurus OB association and have ages of ~10 Myr. HD 131488 and HD 121191 are the","authors_text":"B. Zuckerman, Carl Melis, Inseok Song, Joseph H. Rhee, Michael S. Bessell, Simon J. Murphy","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-13T04:41:28Z","title":"Copious Amounts of Hot and Cold Dust Orbiting the Main Sequence A-type Stars HD 131488 and HD 121191"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2753","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":"sha256:7a9551ad894e077b80830735ce19348c2022a29a52cab3aaa3892b64c5aa526e","target":"record","created_at":"2026-05-18T01:48:16Z","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":"f55454bc3db15a80fa7f8a0a4c089e7f64b60ad016198abd4c526d1a083ad468","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-13T04:41:28Z","title_canon_sha256":"d1d13521ca33683eee836940192ff9db48f3b8575fb9728ee2f28aa1fa4cc1e7"},"schema_version":"1.0","source":{"id":"1308.2753","kind":"arxiv","version":1}},"canonical_sha256":"eaf90030aea19c731bedff6702c44b5d8997c6981b816fa135337be63f99cad3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eaf90030aea19c731bedff6702c44b5d8997c6981b816fa135337be63f99cad3","first_computed_at":"2026-05-18T01:48:16.058068Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:16.058068Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a3XbA0gNr5J1Se30uQdXhY50MlJCiopfFhFfmrM24QG9iUzx9Kr6jkCE7ApISn22QAL9nZBaJYxKuni0l8gbAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:16.058758Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.2753","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7a9551ad894e077b80830735ce19348c2022a29a52cab3aaa3892b64c5aa526e","sha256:c38ab984c5928da9c03ca75dd1c8d37d27f189a69926e311d3d9e995ece49cfe"],"state_sha256":"57adbf587d67107008cd7d6a33adf3b078e882dd503c69dcbd9b95ad38a96237"}