{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2NGSPC7YT6FL6TX2FKQOODXI45","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":"af9bea76d069ee0a32afc68601e93e00adfbaade731292e23462c9624e7a3170","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-29T18:08:42Z","title_canon_sha256":"cbb67db1d6040f5f830938d29e2df95877a992b73f08dc0098f41d1fbdc7297a"},"schema_version":"1.0","source":{"id":"1805.11633","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.11633","created_at":"2026-05-18T00:13:15Z"},{"alias_kind":"arxiv_version","alias_value":"1805.11633v2","created_at":"2026-05-18T00:13:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.11633","created_at":"2026-05-18T00:13:15Z"},{"alias_kind":"pith_short_12","alias_value":"2NGSPC7YT6FL","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2NGSPC7YT6FL6TX2","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2NGSPC7Y","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:2271a6771cb42d46097f2dbeee6d2d8c8cce2f69c5f2f03850dc331fd6ce807d","target":"graph","created_at":"2026-05-18T00:13:15Z","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":"The first detailed chemical abundance analysis of the M dwarf (M4.0) exoplanet-hosting star Ross 128 is presented here, based upon near-infrared (1.5--1.7 \\micron) high-resolution ($R$$\\sim$22,500) spectra from the SDSS-APOGEE survey. We determined precise atmospheric parameters $T_{\\rm eff}$=3231$\\pm$100K, log$g$=4.96$\\pm$0.11 dex and chemical abundances of eight elements (C, O, Mg, Al, K, Ca, Ti, and Fe), finding Ross 128 to have near solar metallicity ([Fe/H] = +0.03$\\pm$0.09 dex). The derived results were obtained via spectral synthesis (1-D LTE) adopting both MARCS and PHOENIX model atmos","authors_text":"Barbara Rojas-Ayala, Cayman T. Unterborn, Cullen Blake, D. A. Garcia-Hernandez, Diogo Souto, Felipe Santana, Henrik Jonsson, J. A. Johnson, Johanna Teske, Katia Cunha, Keivan Stassun, Kevin Covey, Olga Zamora, Steven Gilhool, Steven R. Majewski, Thomas Masseron, Verne V. Smith","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-29T18:08:42Z","title":"Stellar and Planetary Characterization of the Ross 128 Exoplanetary System from APOGEE Spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.11633","kind":"arxiv","version":2},"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":"sha256:52890e2de9d7f975ede3529c59913382d5795a0ea475c1a7139f2964fbdeda08","target":"record","created_at":"2026-05-18T00:13:15Z","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":"af9bea76d069ee0a32afc68601e93e00adfbaade731292e23462c9624e7a3170","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-29T18:08:42Z","title_canon_sha256":"cbb67db1d6040f5f830938d29e2df95877a992b73f08dc0098f41d1fbdc7297a"},"schema_version":"1.0","source":{"id":"1805.11633","kind":"arxiv","version":2}},"canonical_sha256":"d34d278bf89f8abf4efa2aa0e70ee8e747c63fb730308288ba2e60692ab1392e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d34d278bf89f8abf4efa2aa0e70ee8e747c63fb730308288ba2e60692ab1392e","first_computed_at":"2026-05-18T00:13:15.239100Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:15.239100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JYJ0YeBrmhLIylSYAvvNkj9vpjM9DG98WUmi8mXwc1E7ePuUn/HBVIzdm//m00tyPPuwtM/TLBprG4swgK+BDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:15.239807Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.11633","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52890e2de9d7f975ede3529c59913382d5795a0ea475c1a7139f2964fbdeda08","sha256:2271a6771cb42d46097f2dbeee6d2d8c8cce2f69c5f2f03850dc331fd6ce807d"],"state_sha256":"df26c8a69e1df57cf99ed7a23a24216e638407680b9c7575a73f7a1fae97781b"}