{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WBCHKHWIKDUBYFL53HBB7VHPYE","short_pith_number":"pith:WBCHKHWI","canonical_record":{"source":{"id":"1506.01681","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-04T19:01:40Z","cross_cats_sorted":[],"title_canon_sha256":"e53782bc8ba00b74386c5a4fe312c431689f935a1184306e85529948708b6710","abstract_canon_sha256":"d4fa88a0a59fb7b8167e4df8c93ecf137515bcca586611343804f74a96a53ba5"},"schema_version":"1.0"},"canonical_sha256":"b044751ec850e81c157dd9c21fd4efc11e19e3890446924afad21f373fe463f9","source":{"kind":"arxiv","id":"1506.01681","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.01681","created_at":"2026-05-18T01:35:26Z"},{"alias_kind":"arxiv_version","alias_value":"1506.01681v3","created_at":"2026-05-18T01:35:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.01681","created_at":"2026-05-18T01:35:26Z"},{"alias_kind":"pith_short_12","alias_value":"WBCHKHWIKDUB","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WBCHKHWIKDUBYFL5","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WBCHKHWI","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WBCHKHWIKDUBYFL53HBB7VHPYE","target":"record","payload":{"canonical_record":{"source":{"id":"1506.01681","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-04T19:01:40Z","cross_cats_sorted":[],"title_canon_sha256":"e53782bc8ba00b74386c5a4fe312c431689f935a1184306e85529948708b6710","abstract_canon_sha256":"d4fa88a0a59fb7b8167e4df8c93ecf137515bcca586611343804f74a96a53ba5"},"schema_version":"1.0"},"canonical_sha256":"b044751ec850e81c157dd9c21fd4efc11e19e3890446924afad21f373fe463f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:26.594129Z","signature_b64":"WD6VqpAgFX8aQWDqbGrCuUM98cIjjE0GhP3IPiQqtc6aoytGC3c7nJ6hJIMbhA6fCPNUhtC+70WSB8iFuhwiDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b044751ec850e81c157dd9c21fd4efc11e19e3890446924afad21f373fe463f9","last_reissued_at":"2026-05-18T01:35:26.593592Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:26.593592Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.01681","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:35:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CSO/1wnAqTydqYKaa45A68rQdp6xmB0Zh0Sm+TMipILIqTx0dW/pXFc7dVB6tDXBUPEy5AUBktIqS4jKJGJsCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T22:02:32.554238Z"},"content_sha256":"a64d9a2dba0fcb09ea1db22c77cfb7a5b6013f92cb6e09792ce084b184436caf","schema_version":"1.0","event_id":"sha256:a64d9a2dba0fcb09ea1db22c77cfb7a5b6013f92cb6e09792ce084b184436caf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WBCHKHWIKDUBYFL53HBB7VHPYE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PARSEC evolutionary tracks of massive stars up to $350 M_\\odot$ at metallicities 0.0001$\\leq Z \\leq$0.04","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alessandro Bressan (SISSA), Antonio Lanza (SISSA), L\\'eo Girardi (OAPD), Paola Marigo (UNIPD), Xu Kong (USTC), Yang Chen (SISSA&USTC)","submitted_at":"2015-06-04T19:01:40Z","abstract_excerpt":"We complement the PARSEC data base of stellar evolutionary tracks with new models of massive stars, from the pre-main sequence phase to the central carbon ignition. We consider a broad range of metallicities, 0.0001$\\leq Z \\leq$0.04 and initial masses up to $M_{\\rm ini}=350\\,M_\\odot$. The main difference with respect to our previous models of massive stars is the adoption of a recent formalism accounting for the mass-loss enhancement when the ratio of the stellar to the Eddington luminosity, $\\Gamma_e$, approaches unity. With this new formalism, the models are able to reproduce the Humphreys-D"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.01681","kind":"arxiv","version":3},"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":"2026-05-18T01:35:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Fu8ZJCEfDs1ltKRYoFDaRTtvHEY+lptsNR3XXNjsYYUHlUqM25daXweKMnZBCdhkd1hw1NONCPY5yTfMphPAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T22:02:32.554620Z"},"content_sha256":"cc51f68460ee7210255174358e512d95256a87e61b3ce052d3d62da054200bb9","schema_version":"1.0","event_id":"sha256:cc51f68460ee7210255174358e512d95256a87e61b3ce052d3d62da054200bb9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WBCHKHWIKDUBYFL53HBB7VHPYE/bundle.json","state_url":"https://pith.science/pith/WBCHKHWIKDUBYFL53HBB7VHPYE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WBCHKHWIKDUBYFL53HBB7VHPYE/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":"2026-06-26T22:02:32Z","links":{"resolver":"https://pith.science/pith/WBCHKHWIKDUBYFL53HBB7VHPYE","bundle":"https://pith.science/pith/WBCHKHWIKDUBYFL53HBB7VHPYE/bundle.json","state":"https://pith.science/pith/WBCHKHWIKDUBYFL53HBB7VHPYE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WBCHKHWIKDUBYFL53HBB7VHPYE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WBCHKHWIKDUBYFL53HBB7VHPYE","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":"d4fa88a0a59fb7b8167e4df8c93ecf137515bcca586611343804f74a96a53ba5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-04T19:01:40Z","title_canon_sha256":"e53782bc8ba00b74386c5a4fe312c431689f935a1184306e85529948708b6710"},"schema_version":"1.0","source":{"id":"1506.01681","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.01681","created_at":"2026-05-18T01:35:26Z"},{"alias_kind":"arxiv_version","alias_value":"1506.01681v3","created_at":"2026-05-18T01:35:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.01681","created_at":"2026-05-18T01:35:26Z"},{"alias_kind":"pith_short_12","alias_value":"WBCHKHWIKDUB","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WBCHKHWIKDUBYFL5","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WBCHKHWI","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:cc51f68460ee7210255174358e512d95256a87e61b3ce052d3d62da054200bb9","target":"graph","created_at":"2026-05-18T01:35:26Z","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 complement the PARSEC data base of stellar evolutionary tracks with new models of massive stars, from the pre-main sequence phase to the central carbon ignition. We consider a broad range of metallicities, 0.0001$\\leq Z \\leq$0.04 and initial masses up to $M_{\\rm ini}=350\\,M_\\odot$. The main difference with respect to our previous models of massive stars is the adoption of a recent formalism accounting for the mass-loss enhancement when the ratio of the stellar to the Eddington luminosity, $\\Gamma_e$, approaches unity. With this new formalism, the models are able to reproduce the Humphreys-D","authors_text":"Alessandro Bressan (SISSA), Antonio Lanza (SISSA), L\\'eo Girardi (OAPD), Paola Marigo (UNIPD), Xu Kong (USTC), Yang Chen (SISSA&USTC)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-04T19:01:40Z","title":"PARSEC evolutionary tracks of massive stars up to $350 M_\\odot$ at metallicities 0.0001$\\leq Z \\leq$0.04"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.01681","kind":"arxiv","version":3},"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:a64d9a2dba0fcb09ea1db22c77cfb7a5b6013f92cb6e09792ce084b184436caf","target":"record","created_at":"2026-05-18T01:35:26Z","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":"d4fa88a0a59fb7b8167e4df8c93ecf137515bcca586611343804f74a96a53ba5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-04T19:01:40Z","title_canon_sha256":"e53782bc8ba00b74386c5a4fe312c431689f935a1184306e85529948708b6710"},"schema_version":"1.0","source":{"id":"1506.01681","kind":"arxiv","version":3}},"canonical_sha256":"b044751ec850e81c157dd9c21fd4efc11e19e3890446924afad21f373fe463f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b044751ec850e81c157dd9c21fd4efc11e19e3890446924afad21f373fe463f9","first_computed_at":"2026-05-18T01:35:26.593592Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:26.593592Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WD6VqpAgFX8aQWDqbGrCuUM98cIjjE0GhP3IPiQqtc6aoytGC3c7nJ6hJIMbhA6fCPNUhtC+70WSB8iFuhwiDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:26.594129Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.01681","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a64d9a2dba0fcb09ea1db22c77cfb7a5b6013f92cb6e09792ce084b184436caf","sha256:cc51f68460ee7210255174358e512d95256a87e61b3ce052d3d62da054200bb9"],"state_sha256":"1495aa68e544e3ff08110b167d8367431fa79a454d008e1da706833fe2180ac4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ttn5zx1lnoMzGen0vWRPCu0cbr3r51BT+tUXKhTDJV8lFy4ZL0koxlFA7CvZyHOzLSKNwTnx0lnE63JttXKDAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T22:02:32.556828Z","bundle_sha256":"2286615dd1ccd6e3b5eb25c2d87e2f757a97867c8712afed4ba5adbf77a0ccbe"}}