{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:7PCFV2DAPLBJTQX7DNTZLELKMN","short_pith_number":"pith:7PCFV2DA","schema_version":"1.0","canonical_sha256":"fbc45ae8607ac299c2ff1b6795916a634a140556525cb5f54cb0bd035fa10ee5","source":{"kind":"arxiv","id":"2202.02477","version":1},"attestation_state":"computed","paper":{"title":"Retrieving the C and O Abundances of HR 7672~AB: a Solar-Type Primary Star with a Benchmark Brown Dwarf","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andrew Skemer, Anusha Pai Asnodkar, Arpita Roy, Ashley Baker, Benjamin Calvin, Ben Sappey, Charlotte Z. Bond, Daniel Echeverri, Dimitri Mawet, Evan Morris, Garreth Ruane, Geoffrey A. Blake, Greg Doppmann, Jacklyn Pezzato, Jacques-Robert Delorme, Jared R. Kolecki, Jason J. Wang, Jean-Baptiste Ruffio, Jerry W. Xuan, Ji Wang, J. Kent Wallace, Luke Finnerty, Michael C. Liu, Michael P. Fitzgerald, Nemanja Jovanovic, Nicole L. Wallack, Peter Wizinowich, Randall Bartos, Ronald Lopez, Sam Ragland, Sylvain Cetre, Taylor Venenciano, Tobias Schofield","submitted_at":"2022-02-05T03:14:25Z","abstract_excerpt":"A benchmark brown dwarf (BD) is a BD whose properties (e.g., mass and chemical composition) are precisely and independently measured. Benchmark BDs are valuable in testing theoretical evolutionary tracks, spectral synthesis, and atmospheric retrievals for sub-stellar objects. Here, we report results of atmospheric retrieval on a synthetic spectrum and a benchmark BD -- HR 7672~B -- with \\petit. First, we test the retrieval framework on a synthetic PHOENIX BT-Settl spectrum with a solar composition. We show that the retrieved C and O abundances are consistent with solar values, but the retrieve"},"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":"2202.02477","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-02-05T03:14:25Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"09beadb15508e4c1a1258526f3a2957a4d6e9c3669d93417a07c06d7c7c172fc","abstract_canon_sha256":"882cbfda4c4a8f3a67d0a0b9dfa4c99b6255672c11713e7a1795ade2cddc9514"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:11:55.903877Z","signature_b64":"Bz3HZAdEMQDJhr0CLdt6CJBM8wa1BZRNLTtaL1cilTZcqmUMRVRNyCV5KnzeRiQczbBWQSMqDr7H9QtesDTJAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fbc45ae8607ac299c2ff1b6795916a634a140556525cb5f54cb0bd035fa10ee5","last_reissued_at":"2026-07-05T04:11:55.903460Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:11:55.903460Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Retrieving the C and O Abundances of HR 7672~AB: a Solar-Type Primary Star with a Benchmark Brown Dwarf","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andrew Skemer, Anusha Pai Asnodkar, Arpita Roy, Ashley Baker, Benjamin Calvin, Ben Sappey, Charlotte Z. Bond, Daniel Echeverri, Dimitri Mawet, Evan Morris, Garreth Ruane, Geoffrey A. Blake, Greg Doppmann, Jacklyn Pezzato, Jacques-Robert Delorme, Jared R. Kolecki, Jason J. Wang, Jean-Baptiste Ruffio, Jerry W. Xuan, Ji Wang, J. Kent Wallace, Luke Finnerty, Michael C. Liu, Michael P. Fitzgerald, Nemanja Jovanovic, Nicole L. Wallack, Peter Wizinowich, Randall Bartos, Ronald Lopez, Sam Ragland, Sylvain Cetre, Taylor Venenciano, Tobias Schofield","submitted_at":"2022-02-05T03:14:25Z","abstract_excerpt":"A benchmark brown dwarf (BD) is a BD whose properties (e.g., mass and chemical composition) are precisely and independently measured. Benchmark BDs are valuable in testing theoretical evolutionary tracks, spectral synthesis, and atmospheric retrievals for sub-stellar objects. Here, we report results of atmospheric retrieval on a synthetic spectrum and a benchmark BD -- HR 7672~B -- with \\petit. First, we test the retrieval framework on a synthetic PHOENIX BT-Settl spectrum with a solar composition. We show that the retrieved C and O abundances are consistent with solar values, but the retrieve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.02477","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/2202.02477/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":"2202.02477","created_at":"2026-07-05T04:11:55.903523+00:00"},{"alias_kind":"arxiv_version","alias_value":"2202.02477v1","created_at":"2026-07-05T04:11:55.903523+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.02477","created_at":"2026-07-05T04:11:55.903523+00:00"},{"alias_kind":"pith_short_12","alias_value":"7PCFV2DAPLBJ","created_at":"2026-07-05T04:11:55.903523+00:00"},{"alias_kind":"pith_short_16","alias_value":"7PCFV2DAPLBJTQX7","created_at":"2026-07-05T04:11:55.903523+00:00"},{"alias_kind":"pith_short_8","alias_value":"7PCFV2DA","created_at":"2026-07-05T04:11:55.903523+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/7PCFV2DAPLBJTQX7DNTZLELKMN","json":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN.json","graph_json":"https://pith.science/api/pith-number/7PCFV2DAPLBJTQX7DNTZLELKMN/graph.json","events_json":"https://pith.science/api/pith-number/7PCFV2DAPLBJTQX7DNTZLELKMN/events.json","paper":"https://pith.science/paper/7PCFV2DA"},"agent_actions":{"view_html":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN","download_json":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN.json","view_paper":"https://pith.science/paper/7PCFV2DA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2202.02477&json=true","fetch_graph":"https://pith.science/api/pith-number/7PCFV2DAPLBJTQX7DNTZLELKMN/graph.json","fetch_events":"https://pith.science/api/pith-number/7PCFV2DAPLBJTQX7DNTZLELKMN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN/action/storage_attestation","attest_author":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN/action/author_attestation","sign_citation":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN/action/citation_signature","submit_replication":"https://pith.science/pith/7PCFV2DAPLBJTQX7DNTZLELKMN/action/replication_record"}},"created_at":"2026-07-05T04:11:55.903523+00:00","updated_at":"2026-07-05T04:11:55.903523+00:00"}