{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:6P4BCQ23V7R7TSANS7PCM3UGJ6","short_pith_number":"pith:6P4BCQ23","canonical_record":{"source":{"id":"0902.4182","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-24T17:09:40Z","cross_cats_sorted":[],"title_canon_sha256":"b7194938e91ff4067c3e16152cd55c8efcc49f5a490b29170d947e74ec95d70f","abstract_canon_sha256":"04c3bae87c4cbbb0a94d1e164524049ce220d0488698a3dd4f2ef8d94882d664"},"schema_version":"1.0"},"canonical_sha256":"f3f811435bafe3f9c80d97de266e864f8df3325c71a6894401cda6716e6d4390","source":{"kind":"arxiv","id":"0902.4182","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.4182","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"arxiv_version","alias_value":"0902.4182v1","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.4182","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"pith_short_12","alias_value":"6P4BCQ23V7R7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"6P4BCQ23V7R7TSAN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"6P4BCQ23","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:6P4BCQ23V7R7TSANS7PCM3UGJ6","target":"record","payload":{"canonical_record":{"source":{"id":"0902.4182","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-24T17:09:40Z","cross_cats_sorted":[],"title_canon_sha256":"b7194938e91ff4067c3e16152cd55c8efcc49f5a490b29170d947e74ec95d70f","abstract_canon_sha256":"04c3bae87c4cbbb0a94d1e164524049ce220d0488698a3dd4f2ef8d94882d664"},"schema_version":"1.0"},"canonical_sha256":"f3f811435bafe3f9c80d97de266e864f8df3325c71a6894401cda6716e6d4390","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:16.276881Z","signature_b64":"iQC9h65HnVM4aBarfueUgIHUQFKJ036FjuxB+y0SMxvmY9sN0I+pWhGj9+1YB7x35/onG7y5+vuFgqUt0cGECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f3f811435bafe3f9c80d97de266e864f8df3325c71a6894401cda6716e6d4390","last_reissued_at":"2026-05-18T04:29:16.276486Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:16.276486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0902.4182","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":"2026-05-18T04:29:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S+D0Ze/FsFEGkC9bhd/5VCW6gEp6b1j7qSldmsl7x9/vwgCpt90CUURVH9+KasQK1NKiFzcOanaI1/kz4iTuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T10:58:13.300546Z"},"content_sha256":"c91a1e88ff8e532e772f57f3c637e45c2e8ab64457cc09341f919130728bb303","schema_version":"1.0","event_id":"sha256:c91a1e88ff8e532e772f57f3c637e45c2e8ab64457cc09341f919130728bb303"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:6P4BCQ23V7R7TSANS7PCM3UGJ6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopic Analysis of DA White Dwarfs: Stark Broadening of Hydrogen Lines Including Non-Ideal Effects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"P. Bergeron, P.-E. Tremblay","submitted_at":"2009-02-24T17:09:40Z","abstract_excerpt":"We present improved calculations for the Stark broadening of hydrogen lines in dense plasmas typical of white dwarf atmospheres. Our new model is based on the unified theory of Stark broadening from Vidal, Cooper, & Smith. For the first time, we account for the non-ideal effects in a consistent way directly inside the line profile calculations. The Hummer & Mihalas theory is used to describe the non-ideal effects due to perturbations on the absorber from protons and electrons. We use a truncation of the electric microfield distribution in the quasi-static proton broadening to take into account"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.4182","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":"2026-05-18T04:29:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v/Ce6T+XdVrMh2o5i6ZNVCkibkYsud4kcwEzIwEedMuN5oNbcp2S3ftMzKeH8OR58nkqH5sA2Q/a4xFd81WhBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T10:58:13.300884Z"},"content_sha256":"25e6b58eb597c1b8bfb9dc94b7b077af901e9ecb91daf9398c5d08dbb068b135","schema_version":"1.0","event_id":"sha256:25e6b58eb597c1b8bfb9dc94b7b077af901e9ecb91daf9398c5d08dbb068b135"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6/bundle.json","state_url":"https://pith.science/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6/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":"2026-07-20T10:58:13Z","links":{"resolver":"https://pith.science/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6","bundle":"https://pith.science/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6/bundle.json","state":"https://pith.science/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6P4BCQ23V7R7TSANS7PCM3UGJ6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:6P4BCQ23V7R7TSANS7PCM3UGJ6","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":"04c3bae87c4cbbb0a94d1e164524049ce220d0488698a3dd4f2ef8d94882d664","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-24T17:09:40Z","title_canon_sha256":"b7194938e91ff4067c3e16152cd55c8efcc49f5a490b29170d947e74ec95d70f"},"schema_version":"1.0","source":{"id":"0902.4182","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.4182","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"arxiv_version","alias_value":"0902.4182v1","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.4182","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"pith_short_12","alias_value":"6P4BCQ23V7R7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"6P4BCQ23V7R7TSAN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"6P4BCQ23","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:25e6b58eb597c1b8bfb9dc94b7b077af901e9ecb91daf9398c5d08dbb068b135","target":"graph","created_at":"2026-05-18T04:29:16Z","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 improved calculations for the Stark broadening of hydrogen lines in dense plasmas typical of white dwarf atmospheres. Our new model is based on the unified theory of Stark broadening from Vidal, Cooper, & Smith. For the first time, we account for the non-ideal effects in a consistent way directly inside the line profile calculations. The Hummer & Mihalas theory is used to describe the non-ideal effects due to perturbations on the absorber from protons and electrons. We use a truncation of the electric microfield distribution in the quasi-static proton broadening to take into account","authors_text":"P. Bergeron, P.-E. Tremblay","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-24T17:09:40Z","title":"Spectroscopic Analysis of DA White Dwarfs: Stark Broadening of Hydrogen Lines Including Non-Ideal Effects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.4182","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:c91a1e88ff8e532e772f57f3c637e45c2e8ab64457cc09341f919130728bb303","target":"record","created_at":"2026-05-18T04:29:16Z","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":"04c3bae87c4cbbb0a94d1e164524049ce220d0488698a3dd4f2ef8d94882d664","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-24T17:09:40Z","title_canon_sha256":"b7194938e91ff4067c3e16152cd55c8efcc49f5a490b29170d947e74ec95d70f"},"schema_version":"1.0","source":{"id":"0902.4182","kind":"arxiv","version":1}},"canonical_sha256":"f3f811435bafe3f9c80d97de266e864f8df3325c71a6894401cda6716e6d4390","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3f811435bafe3f9c80d97de266e864f8df3325c71a6894401cda6716e6d4390","first_computed_at":"2026-05-18T04:29:16.276486Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:16.276486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iQC9h65HnVM4aBarfueUgIHUQFKJ036FjuxB+y0SMxvmY9sN0I+pWhGj9+1YB7x35/onG7y5+vuFgqUt0cGECQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:16.276881Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.4182","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c91a1e88ff8e532e772f57f3c637e45c2e8ab64457cc09341f919130728bb303","sha256:25e6b58eb597c1b8bfb9dc94b7b077af901e9ecb91daf9398c5d08dbb068b135"],"state_sha256":"97fb2bfec619950d5387ee7ac405bf69c1b0a1a3b12f58fa55df7af1acc7abdc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hVdBeu3ih/f9p19f2bO1VXqd1qw86a+j6bGp9Af3Brl547YFWLHC7rR1V55UrRHOkDcsRYQ+lks24m9k/nBqDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-20T10:58:13.302847Z","bundle_sha256":"5a7e0846421fce20b045f1d1b5f94a13d1c7ebaee53d87c91bf3dbe2bb3ce4e7"}}