{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:UKI3O5FVD37QXZWPB6TPRWGHZH","short_pith_number":"pith:UKI3O5FV","schema_version":"1.0","canonical_sha256":"a291b774b51eff0be6cf0fa6f8d8c7c9c12e1fda74815be4553f3f5486bf2511","source":{"kind":"arxiv","id":"1908.04939","version":1},"attestation_state":"computed","paper":{"title":"Helium settling in F stars: constraining turbulent mixing using observed helium glitch signature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Kuldeep Verma, V\\'ictor Silva Aguirre","submitted_at":"2019-08-14T03:31:32Z","abstract_excerpt":"Recent developments in asteroseismology -- thanks to space-based missions such as {\\it CoRoT} and {\\it Kepler} -- provide handles on those properties of stars that were either completely inaccessible in the past or only poorly measured. Among several such properties is the surface helium abundance of F and G stars. We used the oscillatory signature introduced by the ionization of helium in the observed oscillation frequencies to constrain the amount of helium settling in F stars. For this purpose, we identified three promising F stars for which the standard models of atomic diffusion predict l"},"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":"1908.04939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-14T03:31:32Z","cross_cats_sorted":[],"title_canon_sha256":"8f7eb45d137a7a79a09faf40328771ea530c40d20df97f9d05007b6b01f2aa23","abstract_canon_sha256":"5b1600cb8f1fa452be82f8c101130c4d5a6ebca6fa6fdd336fa8899afe296b2e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:02:02.646384Z","signature_b64":"uHavWu+R103F2HeGGVt4fQWncRC3xeoLU3FD/82e3balGhpBEJizRows0ScHhJF86zTg9onCb/H8GFTWtnoIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a291b774b51eff0be6cf0fa6f8d8c7c9c12e1fda74815be4553f3f5486bf2511","last_reissued_at":"2026-07-05T00:02:02.645904Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:02:02.645904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Helium settling in F stars: constraining turbulent mixing using observed helium glitch signature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Kuldeep Verma, V\\'ictor Silva Aguirre","submitted_at":"2019-08-14T03:31:32Z","abstract_excerpt":"Recent developments in asteroseismology -- thanks to space-based missions such as {\\it CoRoT} and {\\it Kepler} -- provide handles on those properties of stars that were either completely inaccessible in the past or only poorly measured. Among several such properties is the surface helium abundance of F and G stars. We used the oscillatory signature introduced by the ionization of helium in the observed oscillation frequencies to constrain the amount of helium settling in F stars. For this purpose, we identified three promising F stars for which the standard models of atomic diffusion predict l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04939","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/1908.04939/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":"1908.04939","created_at":"2026-07-05T00:02:02.645966+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.04939v1","created_at":"2026-07-05T00:02:02.645966+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04939","created_at":"2026-07-05T00:02:02.645966+00:00"},{"alias_kind":"pith_short_12","alias_value":"UKI3O5FVD37Q","created_at":"2026-07-05T00:02:02.645966+00:00"},{"alias_kind":"pith_short_16","alias_value":"UKI3O5FVD37QXZWP","created_at":"2026-07-05T00:02:02.645966+00:00"},{"alias_kind":"pith_short_8","alias_value":"UKI3O5FV","created_at":"2026-07-05T00:02:02.645966+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/UKI3O5FVD37QXZWPB6TPRWGHZH","json":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH.json","graph_json":"https://pith.science/api/pith-number/UKI3O5FVD37QXZWPB6TPRWGHZH/graph.json","events_json":"https://pith.science/api/pith-number/UKI3O5FVD37QXZWPB6TPRWGHZH/events.json","paper":"https://pith.science/paper/UKI3O5FV"},"agent_actions":{"view_html":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH","download_json":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH.json","view_paper":"https://pith.science/paper/UKI3O5FV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.04939&json=true","fetch_graph":"https://pith.science/api/pith-number/UKI3O5FVD37QXZWPB6TPRWGHZH/graph.json","fetch_events":"https://pith.science/api/pith-number/UKI3O5FVD37QXZWPB6TPRWGHZH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH/action/storage_attestation","attest_author":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH/action/author_attestation","sign_citation":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH/action/citation_signature","submit_replication":"https://pith.science/pith/UKI3O5FVD37QXZWPB6TPRWGHZH/action/replication_record"}},"created_at":"2026-07-05T00:02:02.645966+00:00","updated_at":"2026-07-05T00:02:02.645966+00:00"}