{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:XECCJRKAJL7SCD7DRIKT3Y5KES","short_pith_number":"pith:XECCJRKA","canonical_record":{"source":{"id":"1310.0580","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-02T06:14:35Z","cross_cats_sorted":[],"title_canon_sha256":"92b0fe5f58058780c34b3bfa1d9c6aec04537575c71cc13305375700ef4f5270","abstract_canon_sha256":"1e12692614ebbc7f74c42cd4b5e86e2cf3bb6b74237bafed2d3e1c212e0980b8"},"schema_version":"1.0"},"canonical_sha256":"b90424c5404aff210fe38a153de3aa24896352b8537170ca86d77a4daf31bec8","source":{"kind":"arxiv","id":"1310.0580","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0580","created_at":"2026-05-18T03:11:34Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0580v1","created_at":"2026-05-18T03:11:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0580","created_at":"2026-05-18T03:11:34Z"},{"alias_kind":"pith_short_12","alias_value":"XECCJRKAJL7S","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XECCJRKAJL7SCD7D","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XECCJRKA","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:XECCJRKAJL7SCD7DRIKT3Y5KES","target":"record","payload":{"canonical_record":{"source":{"id":"1310.0580","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-02T06:14:35Z","cross_cats_sorted":[],"title_canon_sha256":"92b0fe5f58058780c34b3bfa1d9c6aec04537575c71cc13305375700ef4f5270","abstract_canon_sha256":"1e12692614ebbc7f74c42cd4b5e86e2cf3bb6b74237bafed2d3e1c212e0980b8"},"schema_version":"1.0"},"canonical_sha256":"b90424c5404aff210fe38a153de3aa24896352b8537170ca86d77a4daf31bec8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:34.800123Z","signature_b64":"54neWW0ZbYzVHRJdm+DXQugUCL2sPVQvmhpe11y6/YryEdWwypf6nbJF2ADarV9Fua3KaRRK7E6I0cjUso/7AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b90424c5404aff210fe38a153de3aa24896352b8537170ca86d77a4daf31bec8","last_reissued_at":"2026-05-18T03:11:34.799335Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:34.799335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.0580","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":"2026-05-18T03:11:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6RMbhMH0J00zhHSQgAR6Z1CXkmWUXnEWLbWEp2EqtOafESB3YrGFaPw9DiEIBNXTCmi57lXRInqJxz6cYIuxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T21:48:57.044187Z"},"content_sha256":"28e0d1c393087ab9c8a3bb70430f6b652f09c463584053c296e9dd6619b5e638","schema_version":"1.0","event_id":"sha256:28e0d1c393087ab9c8a3bb70430f6b652f09c463584053c296e9dd6619b5e638"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:XECCJRKAJL7SCD7DRIKT3Y5KES","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical Abundances of RR Lyrae Type C Star AS162158","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Christopher Sneden, George W. Preston, Jose Govea, Thomas Gomez","submitted_at":"2013-10-02T06:14:35Z","abstract_excerpt":"We report the first extensive model atmosphere and detailed chemical abundance study of eight RR Lyrae variable stars of c subclass throughout their pulsation cycles. Atmospheric parameters effective temperature, surface gravity, microturbulent velocity, and metallicity have been derived. Spectra for this abundace analysis have been obtained with the echelle spectrograph of 100-inch du Pont telescope at Las Campanas Observatory. We have found metallicities and element abundance ratios to be constant within observational uncertainties at all phases of all stars. Moreover, the $\\alpha$-element a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0580","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":"2026-05-18T03:11:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XWxUq9W+bQNEx86fbcNi8A7+o3JPVI2A5ihNr2S0iF7rnfMsfdjaAXXLUF8xnp3TwDa0bpQ9czvBxBG0OmnwDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T21:48:57.044555Z"},"content_sha256":"b9b3fc78b668abb7bb911fa9cfb18cc8af1221cebe1b8fb4f71202123132fbf8","schema_version":"1.0","event_id":"sha256:b9b3fc78b668abb7bb911fa9cfb18cc8af1221cebe1b8fb4f71202123132fbf8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XECCJRKAJL7SCD7DRIKT3Y5KES/bundle.json","state_url":"https://pith.science/pith/XECCJRKAJL7SCD7DRIKT3Y5KES/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XECCJRKAJL7SCD7DRIKT3Y5KES/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":"2026-06-26T21:48:57Z","links":{"resolver":"https://pith.science/pith/XECCJRKAJL7SCD7DRIKT3Y5KES","bundle":"https://pith.science/pith/XECCJRKAJL7SCD7DRIKT3Y5KES/bundle.json","state":"https://pith.science/pith/XECCJRKAJL7SCD7DRIKT3Y5KES/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XECCJRKAJL7SCD7DRIKT3Y5KES/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:XECCJRKAJL7SCD7DRIKT3Y5KES","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":"1e12692614ebbc7f74c42cd4b5e86e2cf3bb6b74237bafed2d3e1c212e0980b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-02T06:14:35Z","title_canon_sha256":"92b0fe5f58058780c34b3bfa1d9c6aec04537575c71cc13305375700ef4f5270"},"schema_version":"1.0","source":{"id":"1310.0580","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0580","created_at":"2026-05-18T03:11:34Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0580v1","created_at":"2026-05-18T03:11:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0580","created_at":"2026-05-18T03:11:34Z"},{"alias_kind":"pith_short_12","alias_value":"XECCJRKAJL7S","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XECCJRKAJL7SCD7D","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XECCJRKA","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:b9b3fc78b668abb7bb911fa9cfb18cc8af1221cebe1b8fb4f71202123132fbf8","target":"graph","created_at":"2026-05-18T03:11:34Z","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 report the first extensive model atmosphere and detailed chemical abundance study of eight RR Lyrae variable stars of c subclass throughout their pulsation cycles. Atmospheric parameters effective temperature, surface gravity, microturbulent velocity, and metallicity have been derived. Spectra for this abundace analysis have been obtained with the echelle spectrograph of 100-inch du Pont telescope at Las Campanas Observatory. We have found metallicities and element abundance ratios to be constant within observational uncertainties at all phases of all stars. Moreover, the $\\alpha$-element a","authors_text":"Christopher Sneden, George W. Preston, Jose Govea, Thomas Gomez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-02T06:14:35Z","title":"Chemical Abundances of RR Lyrae Type C Star AS162158"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0580","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":"sha256:28e0d1c393087ab9c8a3bb70430f6b652f09c463584053c296e9dd6619b5e638","target":"record","created_at":"2026-05-18T03:11:34Z","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":"1e12692614ebbc7f74c42cd4b5e86e2cf3bb6b74237bafed2d3e1c212e0980b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-02T06:14:35Z","title_canon_sha256":"92b0fe5f58058780c34b3bfa1d9c6aec04537575c71cc13305375700ef4f5270"},"schema_version":"1.0","source":{"id":"1310.0580","kind":"arxiv","version":1}},"canonical_sha256":"b90424c5404aff210fe38a153de3aa24896352b8537170ca86d77a4daf31bec8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b90424c5404aff210fe38a153de3aa24896352b8537170ca86d77a4daf31bec8","first_computed_at":"2026-05-18T03:11:34.799335Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:34.799335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"54neWW0ZbYzVHRJdm+DXQugUCL2sPVQvmhpe11y6/YryEdWwypf6nbJF2ADarV9Fua3KaRRK7E6I0cjUso/7AA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:34.800123Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.0580","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28e0d1c393087ab9c8a3bb70430f6b652f09c463584053c296e9dd6619b5e638","sha256:b9b3fc78b668abb7bb911fa9cfb18cc8af1221cebe1b8fb4f71202123132fbf8"],"state_sha256":"8dce70519debb6052b7a2d6e2c8b22b88aeebb01426e0ce47a46e48cb51ed60c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OG3fp/OxdBEcs+WJK++Ml7I25vIrazurniwlGTk7UI+g/+Y/QCvZx2pZJ7PCbDbaUNwdounmoAOgte7h7MEKCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T21:48:57.046427Z","bundle_sha256":"2e3433dfcbe0c4ba2b10ae7af1f738c2fe18a51b529f91420ef0f601a5298a28"}}