{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:DGQANC2EOVVLRGXFJI2NQ24DWX","short_pith_number":"pith:DGQANC2E","canonical_record":{"source":{"id":"1112.0281","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-12-01T19:39:22Z","cross_cats_sorted":[],"title_canon_sha256":"dd71968c968cec2b98480dac439fe672ab6c75c8226ef7885976a8109d6296d6","abstract_canon_sha256":"87e3a5a56ec8cda699d8265b2977756c8fbb705cfa19bdff736077de5db4be19"},"schema_version":"1.0"},"canonical_sha256":"19a0068b44756ab89ae54a34d86b83b5cc3477ea4a8c0fc5dbb6f827aee6294e","source":{"kind":"arxiv","id":"1112.0281","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.0281","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"1112.0281v1","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.0281","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"DGQANC2EOVVL","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DGQANC2EOVVLRGXF","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DGQANC2E","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:DGQANC2EOVVLRGXFJI2NQ24DWX","target":"record","payload":{"canonical_record":{"source":{"id":"1112.0281","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-12-01T19:39:22Z","cross_cats_sorted":[],"title_canon_sha256":"dd71968c968cec2b98480dac439fe672ab6c75c8226ef7885976a8109d6296d6","abstract_canon_sha256":"87e3a5a56ec8cda699d8265b2977756c8fbb705cfa19bdff736077de5db4be19"},"schema_version":"1.0"},"canonical_sha256":"19a0068b44756ab89ae54a34d86b83b5cc3477ea4a8c0fc5dbb6f827aee6294e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:20.281698Z","signature_b64":"jhL8EOOnC39tZ/JEcIOKrvGpg+8SdGK/FJHrzp6JJ5lPeVrLeRm7KQGSxcwNm89ols0wN/XL2uEKFsnkNwR/Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19a0068b44756ab89ae54a34d86b83b5cc3477ea4a8c0fc5dbb6f827aee6294e","last_reissued_at":"2026-05-18T01:59:20.280956Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:20.280956Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.0281","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":"2026-05-18T01:59:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMtLE/cFlCJUlFgA0xB7HTH0ig1BTzLr7kOoPakEQM2kDGHl3kgNa5jneguJdFSYY+26qGJKJnfeqdx3MU8UCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:50:09.790338Z"},"content_sha256":"9ac57305d254f2ed07a9045e4e78005376572afa916b963fa545b2c304729441","schema_version":"1.0","event_id":"sha256:9ac57305d254f2ed07a9045e4e78005376572afa916b963fa545b2c304729441"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:DGQANC2EOVVLRGXFJI2NQ24DWX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Initial-Final Mass Relation among White Dwarfs in Wide Binaries","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Gang Zhao, Jingkun Zhao, Lee Anne Willson, Qian Wang, Terry D. Oswalt","submitted_at":"2011-12-01T19:39:22Z","abstract_excerpt":"We present the initial-final mass relation derived from 10 white dwarfs in wide binaries that consist of a main sequence star and a white dwarf. The temperature and gravity of each white dwarf was measured by fitting theoretical model atmospheres to the observed spectrum using a $\\chi^{2}$ fitting algorithm. The cooling time and mass was obtained using theoretical cooling tracks. The total age of each binary was estimated from the chromospheric activity of its main sequence component to an uncertainty of about 0.17 dex in log \\textit{t} The difference between the total age and white dwarf cool"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.0281","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":"2026-05-18T01:59:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YIOQT1iMaZbUYE7lOEImIP7Y4XSTSCZVSO+YgPdq1YlZixfUwpuQCwwtn56C1eYYN98QCp0xBGTNYCnpfr4CAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:50:09.791028Z"},"content_sha256":"1275e51295551a0ffb9e0eeee80e8687e3bf04b824a88f97be811761b657a640","schema_version":"1.0","event_id":"sha256:1275e51295551a0ffb9e0eeee80e8687e3bf04b824a88f97be811761b657a640"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DGQANC2EOVVLRGXFJI2NQ24DWX/bundle.json","state_url":"https://pith.science/pith/DGQANC2EOVVLRGXFJI2NQ24DWX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DGQANC2EOVVLRGXFJI2NQ24DWX/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":"2026-05-30T00:50:09Z","links":{"resolver":"https://pith.science/pith/DGQANC2EOVVLRGXFJI2NQ24DWX","bundle":"https://pith.science/pith/DGQANC2EOVVLRGXFJI2NQ24DWX/bundle.json","state":"https://pith.science/pith/DGQANC2EOVVLRGXFJI2NQ24DWX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DGQANC2EOVVLRGXFJI2NQ24DWX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:DGQANC2EOVVLRGXFJI2NQ24DWX","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":"87e3a5a56ec8cda699d8265b2977756c8fbb705cfa19bdff736077de5db4be19","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-12-01T19:39:22Z","title_canon_sha256":"dd71968c968cec2b98480dac439fe672ab6c75c8226ef7885976a8109d6296d6"},"schema_version":"1.0","source":{"id":"1112.0281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.0281","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"1112.0281v1","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.0281","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"DGQANC2EOVVL","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DGQANC2EOVVLRGXF","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DGQANC2E","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:1275e51295551a0ffb9e0eeee80e8687e3bf04b824a88f97be811761b657a640","target":"graph","created_at":"2026-05-18T01:59:20Z","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 present the initial-final mass relation derived from 10 white dwarfs in wide binaries that consist of a main sequence star and a white dwarf. The temperature and gravity of each white dwarf was measured by fitting theoretical model atmospheres to the observed spectrum using a $\\chi^{2}$ fitting algorithm. The cooling time and mass was obtained using theoretical cooling tracks. The total age of each binary was estimated from the chromospheric activity of its main sequence component to an uncertainty of about 0.17 dex in log \\textit{t} The difference between the total age and white dwarf cool","authors_text":"Gang Zhao, Jingkun Zhao, Lee Anne Willson, Qian Wang, Terry D. Oswalt","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-12-01T19:39:22Z","title":"The Initial-Final Mass Relation among White Dwarfs in Wide Binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.0281","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":"sha256:9ac57305d254f2ed07a9045e4e78005376572afa916b963fa545b2c304729441","target":"record","created_at":"2026-05-18T01:59:20Z","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":"87e3a5a56ec8cda699d8265b2977756c8fbb705cfa19bdff736077de5db4be19","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-12-01T19:39:22Z","title_canon_sha256":"dd71968c968cec2b98480dac439fe672ab6c75c8226ef7885976a8109d6296d6"},"schema_version":"1.0","source":{"id":"1112.0281","kind":"arxiv","version":1}},"canonical_sha256":"19a0068b44756ab89ae54a34d86b83b5cc3477ea4a8c0fc5dbb6f827aee6294e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19a0068b44756ab89ae54a34d86b83b5cc3477ea4a8c0fc5dbb6f827aee6294e","first_computed_at":"2026-05-18T01:59:20.280956Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:20.280956Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jhL8EOOnC39tZ/JEcIOKrvGpg+8SdGK/FJHrzp6JJ5lPeVrLeRm7KQGSxcwNm89ols0wN/XL2uEKFsnkNwR/Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:20.281698Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.0281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ac57305d254f2ed07a9045e4e78005376572afa916b963fa545b2c304729441","sha256:1275e51295551a0ffb9e0eeee80e8687e3bf04b824a88f97be811761b657a640"],"state_sha256":"226c72b99a2e9a3c434cffad2b59432dc2afc0f817502c3eac1e22d204a6e611"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5gDqYB5MWKOJPfTeJNlZ3j+XsUMmNpPfJm3u5KJh6vVc/s7bYrVgAhZSFkMTem76fFbIS8W5JW1vsEDnot6aDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T00:50:09.794846Z","bundle_sha256":"1bae244916052da435b2e0609ef166c4a0b99ed6abe9554f18cd05d5e6a8c696"}}