{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BTIKDLERYPPH5QWO6DFH2BBJER","short_pith_number":"pith:BTIKDLER","canonical_record":{"source":{"id":"1801.06350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-19T10:04:48Z","cross_cats_sorted":[],"title_canon_sha256":"d536e0618fff8df1d1f01ff6451045519bf9f11e695f3c772869d6c822b40dee","abstract_canon_sha256":"b4ec289d0cfe80927e0457ffc8ce70c31a2595a27092e2d2d6e888d204bb0a4b"},"schema_version":"1.0"},"canonical_sha256":"0cd0a1ac91c3de7ec2cef0ca7d0429246dcd7fe6bead0c4648802f68467322d3","source":{"kind":"arxiv","id":"1801.06350","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.06350","created_at":"2026-05-18T00:25:30Z"},{"alias_kind":"arxiv_version","alias_value":"1801.06350v1","created_at":"2026-05-18T00:25:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06350","created_at":"2026-05-18T00:25:30Z"},{"alias_kind":"pith_short_12","alias_value":"BTIKDLERYPPH","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BTIKDLERYPPH5QWO","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BTIKDLER","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BTIKDLERYPPH5QWO6DFH2BBJER","target":"record","payload":{"canonical_record":{"source":{"id":"1801.06350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-19T10:04:48Z","cross_cats_sorted":[],"title_canon_sha256":"d536e0618fff8df1d1f01ff6451045519bf9f11e695f3c772869d6c822b40dee","abstract_canon_sha256":"b4ec289d0cfe80927e0457ffc8ce70c31a2595a27092e2d2d6e888d204bb0a4b"},"schema_version":"1.0"},"canonical_sha256":"0cd0a1ac91c3de7ec2cef0ca7d0429246dcd7fe6bead0c4648802f68467322d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:25:30.436663Z","signature_b64":"Zp0FlJoJV9snrcvhfZogOMotKmS5TRiSrBA04QDQAVf4UjLsYXDmzAIeZPP0ykiBviC5w6S/5aMjdRBYjU26Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cd0a1ac91c3de7ec2cef0ca7d0429246dcd7fe6bead0c4648802f68467322d3","last_reissued_at":"2026-05-18T00:25:30.436061Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:25:30.436061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.06350","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":"2026-05-18T00:25:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4xTSGoA9tBWBjMUOnRA6yOLgmE2mtxLlJUE18Aw+1rJjGMGEyaADk7KLZbsdzoWzsYWdKKgoJlqhALzOfPCmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:17:41.617250Z"},"content_sha256":"82907407c0d7e5b31692a544757c8d7ac6a8a819426edc36d56ac1d255c688c3","schema_version":"1.0","event_id":"sha256:82907407c0d7e5b31692a544757c8d7ac6a8a819426edc36d56ac1d255c688c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BTIKDLERYPPH5QWO6DFH2BBJER","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral analysis of the He-enriched sdO-star HD 127493","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Marilyn Latour, Matti Dorsch, Ulrich Heber","submitted_at":"2018-01-19T10:04:48Z","abstract_excerpt":"The bright sdO star HD 127493 is known to be of mixed H/He composition and excellent archival spectra covering both optical and ultraviolet ranges are available. UV spectra play a key role as they give access to many chemical species that do not show spectral lines in the optical, such as iron and nickel. This encouraged the quantitative spectral analysis of this prototypical mixed H/He composition sdO star. We determined atmospheric parameters for HD 127493 in addition to the abundance of C, N, O, Si, S, Fe, and Ni in the atmosphere using non-LTE model atmospheres calculated with TLUSTY/SYNSP"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06350","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":"2026-05-18T00:25:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hV2hncWOXeFs5W+HGCcj3z70Nuj/eEH6vvRn7gTcQtt1hSYigkOFCxzRUe/inIJxI4CKmOri6YG4iWUKknWECA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:17:41.617646Z"},"content_sha256":"99bb68bab8a68c9e1d75948735ab1f24f86329037ac808542ef8a51a266ecfc4","schema_version":"1.0","event_id":"sha256:99bb68bab8a68c9e1d75948735ab1f24f86329037ac808542ef8a51a266ecfc4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BTIKDLERYPPH5QWO6DFH2BBJER/bundle.json","state_url":"https://pith.science/pith/BTIKDLERYPPH5QWO6DFH2BBJER/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BTIKDLERYPPH5QWO6DFH2BBJER/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":"2026-05-31T22:17:41Z","links":{"resolver":"https://pith.science/pith/BTIKDLERYPPH5QWO6DFH2BBJER","bundle":"https://pith.science/pith/BTIKDLERYPPH5QWO6DFH2BBJER/bundle.json","state":"https://pith.science/pith/BTIKDLERYPPH5QWO6DFH2BBJER/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BTIKDLERYPPH5QWO6DFH2BBJER/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BTIKDLERYPPH5QWO6DFH2BBJER","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":"b4ec289d0cfe80927e0457ffc8ce70c31a2595a27092e2d2d6e888d204bb0a4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-19T10:04:48Z","title_canon_sha256":"d536e0618fff8df1d1f01ff6451045519bf9f11e695f3c772869d6c822b40dee"},"schema_version":"1.0","source":{"id":"1801.06350","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.06350","created_at":"2026-05-18T00:25:30Z"},{"alias_kind":"arxiv_version","alias_value":"1801.06350v1","created_at":"2026-05-18T00:25:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06350","created_at":"2026-05-18T00:25:30Z"},{"alias_kind":"pith_short_12","alias_value":"BTIKDLERYPPH","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BTIKDLERYPPH5QWO","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BTIKDLER","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:99bb68bab8a68c9e1d75948735ab1f24f86329037ac808542ef8a51a266ecfc4","target":"graph","created_at":"2026-05-18T00:25:30Z","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":"The bright sdO star HD 127493 is known to be of mixed H/He composition and excellent archival spectra covering both optical and ultraviolet ranges are available. UV spectra play a key role as they give access to many chemical species that do not show spectral lines in the optical, such as iron and nickel. This encouraged the quantitative spectral analysis of this prototypical mixed H/He composition sdO star. We determined atmospheric parameters for HD 127493 in addition to the abundance of C, N, O, Si, S, Fe, and Ni in the atmosphere using non-LTE model atmospheres calculated with TLUSTY/SYNSP","authors_text":"Marilyn Latour, Matti Dorsch, Ulrich Heber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-19T10:04:48Z","title":"Spectral analysis of the He-enriched sdO-star HD 127493"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06350","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":"sha256:82907407c0d7e5b31692a544757c8d7ac6a8a819426edc36d56ac1d255c688c3","target":"record","created_at":"2026-05-18T00:25:30Z","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":"b4ec289d0cfe80927e0457ffc8ce70c31a2595a27092e2d2d6e888d204bb0a4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-19T10:04:48Z","title_canon_sha256":"d536e0618fff8df1d1f01ff6451045519bf9f11e695f3c772869d6c822b40dee"},"schema_version":"1.0","source":{"id":"1801.06350","kind":"arxiv","version":1}},"canonical_sha256":"0cd0a1ac91c3de7ec2cef0ca7d0429246dcd7fe6bead0c4648802f68467322d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cd0a1ac91c3de7ec2cef0ca7d0429246dcd7fe6bead0c4648802f68467322d3","first_computed_at":"2026-05-18T00:25:30.436061Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:30.436061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Zp0FlJoJV9snrcvhfZogOMotKmS5TRiSrBA04QDQAVf4UjLsYXDmzAIeZPP0ykiBviC5w6S/5aMjdRBYjU26Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:30.436663Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.06350","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82907407c0d7e5b31692a544757c8d7ac6a8a819426edc36d56ac1d255c688c3","sha256:99bb68bab8a68c9e1d75948735ab1f24f86329037ac808542ef8a51a266ecfc4"],"state_sha256":"d5e44022fc179a9651108fc2fc55adabc7267bd5538a6dccb4e40fec04cf9fa9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aHm/IXycQsaT3CJ1Me0Ij/ZUtOBqTa2gt54YdjAOUr70/9SaHRdHggJIfl5u/zcfBLj+qM6iUyur4iALzAcbBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T22:17:41.620054Z","bundle_sha256":"37036b4271f16329b077b2c2dc33001a5cf83774ceb6377f535f0ddce6e6c294"}}