{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:B3OGMSR5RQAY7J5OBAT7NEX3AP","short_pith_number":"pith:B3OGMSR5","canonical_record":{"source":{"id":"1410.1559","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-10-06T20:13:50Z","cross_cats_sorted":[],"title_canon_sha256":"2fff92e783756833031d0d2c2346ace8a2ce7caa0fd554698c640bbebc7a3d5b","abstract_canon_sha256":"01a9ff548c9b9330c3248c226816d514a708ea00c1acc339badb730b6e0839af"},"schema_version":"1.0"},"canonical_sha256":"0edc664a3d8c018fa7ae0827f692fb03e507d54ab0419331855332d477939276","source":{"kind":"arxiv","id":"1410.1559","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.1559","created_at":"2026-05-18T01:41:51Z"},{"alias_kind":"arxiv_version","alias_value":"1410.1559v1","created_at":"2026-05-18T01:41:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.1559","created_at":"2026-05-18T01:41:51Z"},{"alias_kind":"pith_short_12","alias_value":"B3OGMSR5RQAY","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"B3OGMSR5RQAY7J5O","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"B3OGMSR5","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:B3OGMSR5RQAY7J5OBAT7NEX3AP","target":"record","payload":{"canonical_record":{"source":{"id":"1410.1559","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-10-06T20:13:50Z","cross_cats_sorted":[],"title_canon_sha256":"2fff92e783756833031d0d2c2346ace8a2ce7caa0fd554698c640bbebc7a3d5b","abstract_canon_sha256":"01a9ff548c9b9330c3248c226816d514a708ea00c1acc339badb730b6e0839af"},"schema_version":"1.0"},"canonical_sha256":"0edc664a3d8c018fa7ae0827f692fb03e507d54ab0419331855332d477939276","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:51.944828Z","signature_b64":"nE41fF6T/9ypf60r8mbGF3aKsopgVZZIT7tY9RVj9EIVr5AWXGMs2/kCCBB2FU/IsMcQPact6scdUZ5ENGc2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0edc664a3d8c018fa7ae0827f692fb03e507d54ab0419331855332d477939276","last_reissued_at":"2026-05-18T01:41:51.944169Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:51.944169Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.1559","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WNyrNazZSki7igr4Uk23+N/NbiEy2VFyVo44AhIkO+KYFwqG8hNrHgf2fZ498p6jsbxW34dPFrE7NYOjSZClBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:50:00.176201Z"},"content_sha256":"fd6f6093169aebca96c49acc2a9e08ea17cb10f364774965f44c2ce7e467b90d","schema_version":"1.0","event_id":"sha256:fd6f6093169aebca96c49acc2a9e08ea17cb10f364774965f44c2ce7e467b90d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:B3OGMSR5RQAY7J5OBAT7NEX3AP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Improvements to stellar structure models, based on a grid of 3D convection simulations. II. Calibrating the mixing-length formulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"{\\AA}ke Nordlund, J{\\o}rgen Christensen-Dalsgaard, Martin Asplund, Regner Trampedach, Robert F. Stein","submitted_at":"2014-10-06T20:13:50Z","abstract_excerpt":"We perform a calibration of the mixing length of convection in stellar structure models against realistic 3D radiation-coupled hydrodynamics (RHD) simulations of convection in stellar surface layers, determining the adiabat deep in convective stellar envelopes.\n  The mixing-length parameter $\\alpha$ is calibrated by matching averages of the 3D simulations to 1D stellar envelope models, ensuring identical atomic physics in the two cases. This is done for a previously published grid of solar-metallicity convection simulations, covering from 4200 K to 6900 K on the main sequence, and 4300-5000 K "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.1559","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RzNWfBPdq6bykyCJR6FZNKu0Gn2xdXFUmDHuw0B32XQAUa46gM7IaXe07aALrhAAJJ/UbcOY8rEVoBl5QcO5Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:50:00.176563Z"},"content_sha256":"a76e2c24d6cded87c47dc172dcbb6e051df5b210b76cddda04c714e781e6a65d","schema_version":"1.0","event_id":"sha256:a76e2c24d6cded87c47dc172dcbb6e051df5b210b76cddda04c714e781e6a65d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP/bundle.json","state_url":"https://pith.science/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-02T16:50:00Z","links":{"resolver":"https://pith.science/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP","bundle":"https://pith.science/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP/bundle.json","state":"https://pith.science/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3OGMSR5RQAY7J5OBAT7NEX3AP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:B3OGMSR5RQAY7J5OBAT7NEX3AP","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":"01a9ff548c9b9330c3248c226816d514a708ea00c1acc339badb730b6e0839af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-10-06T20:13:50Z","title_canon_sha256":"2fff92e783756833031d0d2c2346ace8a2ce7caa0fd554698c640bbebc7a3d5b"},"schema_version":"1.0","source":{"id":"1410.1559","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.1559","created_at":"2026-05-18T01:41:51Z"},{"alias_kind":"arxiv_version","alias_value":"1410.1559v1","created_at":"2026-05-18T01:41:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.1559","created_at":"2026-05-18T01:41:51Z"},{"alias_kind":"pith_short_12","alias_value":"B3OGMSR5RQAY","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"B3OGMSR5RQAY7J5O","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"B3OGMSR5","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:a76e2c24d6cded87c47dc172dcbb6e051df5b210b76cddda04c714e781e6a65d","target":"graph","created_at":"2026-05-18T01:41:51Z","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 perform a calibration of the mixing length of convection in stellar structure models against realistic 3D radiation-coupled hydrodynamics (RHD) simulations of convection in stellar surface layers, determining the adiabat deep in convective stellar envelopes.\n  The mixing-length parameter $\\alpha$ is calibrated by matching averages of the 3D simulations to 1D stellar envelope models, ensuring identical atomic physics in the two cases. This is done for a previously published grid of solar-metallicity convection simulations, covering from 4200 K to 6900 K on the main sequence, and 4300-5000 K ","authors_text":"{\\AA}ke Nordlund, J{\\o}rgen Christensen-Dalsgaard, Martin Asplund, Regner Trampedach, Robert F. Stein","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-10-06T20:13:50Z","title":"Improvements to stellar structure models, based on a grid of 3D convection simulations. II. Calibrating the mixing-length formulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.1559","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:fd6f6093169aebca96c49acc2a9e08ea17cb10f364774965f44c2ce7e467b90d","target":"record","created_at":"2026-05-18T01:41:51Z","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":"01a9ff548c9b9330c3248c226816d514a708ea00c1acc339badb730b6e0839af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-10-06T20:13:50Z","title_canon_sha256":"2fff92e783756833031d0d2c2346ace8a2ce7caa0fd554698c640bbebc7a3d5b"},"schema_version":"1.0","source":{"id":"1410.1559","kind":"arxiv","version":1}},"canonical_sha256":"0edc664a3d8c018fa7ae0827f692fb03e507d54ab0419331855332d477939276","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0edc664a3d8c018fa7ae0827f692fb03e507d54ab0419331855332d477939276","first_computed_at":"2026-05-18T01:41:51.944169Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:51.944169Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nE41fF6T/9ypf60r8mbGF3aKsopgVZZIT7tY9RVj9EIVr5AWXGMs2/kCCBB2FU/IsMcQPact6scdUZ5ENGc2CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:51.944828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.1559","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd6f6093169aebca96c49acc2a9e08ea17cb10f364774965f44c2ce7e467b90d","sha256:a76e2c24d6cded87c47dc172dcbb6e051df5b210b76cddda04c714e781e6a65d"],"state_sha256":"931e2e283959afeb37e264422474fba0bd33fb751d6f073cee46bc50330478fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ic3F3Ho5BUYN5kuuaetQjzl5sd/vV9HTx4PQBwpd7ShSeUwjfCNvqBam/D/AyjqCXh2CibSDnsbKv8zo2KeNDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T16:50:00.178656Z","bundle_sha256":"4adf2eca1977dfe552f23f636fbc25b63b630917ac633e8f3bb586f91ebf83e5"}}