{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:JANI4IJFHQZCPOZX7ZLWTEU3VS","short_pith_number":"pith:JANI4IJF","canonical_record":{"source":{"id":"astro-ph/9709004","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-31T17:15:23Z","cross_cats_sorted":[],"title_canon_sha256":"d4359f317ea5e4e6cbc500dbd8c158d15f3893c245050b782bc02c779000474c","abstract_canon_sha256":"13855d8087a2040b579abab934f1063ddedb41cad2b7bd7ceb333a48a74d2477"},"schema_version":"1.0"},"canonical_sha256":"481a8e21253c3227bb37fe5769929bacb2ffa066a7f31c8497370e96626c0fb9","source":{"kind":"arxiv","id":"astro-ph/9709004","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9709004","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9709004v1","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9709004","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"JANI4IJFHQZC","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"JANI4IJFHQZCPOZX","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"JANI4IJF","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:JANI4IJFHQZCPOZX7ZLWTEU3VS","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9709004","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-31T17:15:23Z","cross_cats_sorted":[],"title_canon_sha256":"d4359f317ea5e4e6cbc500dbd8c158d15f3893c245050b782bc02c779000474c","abstract_canon_sha256":"13855d8087a2040b579abab934f1063ddedb41cad2b7bd7ceb333a48a74d2477"},"schema_version":"1.0"},"canonical_sha256":"481a8e21253c3227bb37fe5769929bacb2ffa066a7f31c8497370e96626c0fb9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:21.483607Z","signature_b64":"c88E0hFeg4X/WHqE7UaUzJeQf6wB4yDa6F+U1elI//hGo+okIfgIfvAEyQwhrV7In4xom7UKDqHMIL+c+5uDDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"481a8e21253c3227bb37fe5769929bacb2ffa066a7f31c8497370e96626c0fb9","last_reissued_at":"2026-05-18T01:09:21.483183Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:21.483183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9709004","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":"2026-05-18T01:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VEAh0mxkkZHUqghbFsIhAXBztdO50KwwBab6F+/lKA79AtZJs9QbH3cIVvUUYpoyxThopJ2gbdgW8yJnMZJ5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T04:26:25.104014Z"},"content_sha256":"03671ee65cf2d474a7745c70c8bcc7b12de088aa332adc4e766a400d10f2fc46","schema_version":"1.0","event_id":"sha256:03671ee65cf2d474a7745c70c8bcc7b12de088aa332adc4e766a400d10f2fc46"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:JANI4IJFHQZCPOZX7ZLWTEU3VS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Library of high-resolution UES echelle spectra of F, G, K and M field dwarf stars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) Pennsylvania State University, (3) Instituto de Astrof\\'isica de Canarias, 4) ((1) Dept. Astrofisica UCM, (4) University of California at Berkeley), D. Montes (1, E.L. Martin (3","submitted_at":"1997-08-31T17:15:23Z","abstract_excerpt":"We present a library of Utrecht echelle spectrograph (UES) observations of a sample of F, G, K and M field dwarf stars covering the spectral range from 4800 AA to 10600 AA with a resolution of 55000. These spectra include some of the spectral lines most widely used as optical and near-infrared indicators of chromospheric activity such as H_beta, Mg I b triplet, Na I D_1, D_2, He I D_3, H_alpha, and Ca II IRT lines, as well as a large number of photospheric lines which can also be affected by chromospheric activity. The spectra have been compiled with the aim of providing a set of standards obs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9709004","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":"2026-05-18T01:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F/2Pe6Y+H52kKGXRybVhAgIIrchhHJp0phAeMxq+PXyG+C7Vx94ihaODfg8ajwoJzPya01LchYYuN2zIS4/TDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T04:26:25.104368Z"},"content_sha256":"bc912f5d54bae6bb4ff1432ce02a66cae20859b146fa88888b663d00daa7173b","schema_version":"1.0","event_id":"sha256:bc912f5d54bae6bb4ff1432ce02a66cae20859b146fa88888b663d00daa7173b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS/bundle.json","state_url":"https://pith.science/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS/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":"2026-06-04T04:26:25Z","links":{"resolver":"https://pith.science/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS","bundle":"https://pith.science/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS/bundle.json","state":"https://pith.science/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JANI4IJFHQZCPOZX7ZLWTEU3VS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:JANI4IJFHQZCPOZX7ZLWTEU3VS","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":"13855d8087a2040b579abab934f1063ddedb41cad2b7bd7ceb333a48a74d2477","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-31T17:15:23Z","title_canon_sha256":"d4359f317ea5e4e6cbc500dbd8c158d15f3893c245050b782bc02c779000474c"},"schema_version":"1.0","source":{"id":"astro-ph/9709004","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9709004","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9709004v1","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9709004","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"JANI4IJFHQZC","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"JANI4IJFHQZCPOZX","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"JANI4IJF","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:bc912f5d54bae6bb4ff1432ce02a66cae20859b146fa88888b663d00daa7173b","target":"graph","created_at":"2026-05-18T01:09:21Z","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 a library of Utrecht echelle spectrograph (UES) observations of a sample of F, G, K and M field dwarf stars covering the spectral range from 4800 AA to 10600 AA with a resolution of 55000. These spectra include some of the spectral lines most widely used as optical and near-infrared indicators of chromospheric activity such as H_beta, Mg I b triplet, Na I D_1, D_2, He I D_3, H_alpha, and Ca II IRT lines, as well as a large number of photospheric lines which can also be affected by chromospheric activity. The spectra have been compiled with the aim of providing a set of standards obs","authors_text":"2), (2) Pennsylvania State University, (3) Instituto de Astrof\\'isica de Canarias, 4) ((1) Dept. Astrofisica UCM, (4) University of California at Berkeley), D. Montes (1, E.L. Martin (3","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-08-31T17:15:23Z","title":"Library of high-resolution UES echelle spectra of F, G, K and M field dwarf stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9709004","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":"sha256:03671ee65cf2d474a7745c70c8bcc7b12de088aa332adc4e766a400d10f2fc46","target":"record","created_at":"2026-05-18T01:09:21Z","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":"13855d8087a2040b579abab934f1063ddedb41cad2b7bd7ceb333a48a74d2477","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-08-31T17:15:23Z","title_canon_sha256":"d4359f317ea5e4e6cbc500dbd8c158d15f3893c245050b782bc02c779000474c"},"schema_version":"1.0","source":{"id":"astro-ph/9709004","kind":"arxiv","version":1}},"canonical_sha256":"481a8e21253c3227bb37fe5769929bacb2ffa066a7f31c8497370e96626c0fb9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"481a8e21253c3227bb37fe5769929bacb2ffa066a7f31c8497370e96626c0fb9","first_computed_at":"2026-05-18T01:09:21.483183Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:21.483183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c88E0hFeg4X/WHqE7UaUzJeQf6wB4yDa6F+U1elI//hGo+okIfgIfvAEyQwhrV7In4xom7UKDqHMIL+c+5uDDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:21.483607Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9709004","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03671ee65cf2d474a7745c70c8bcc7b12de088aa332adc4e766a400d10f2fc46","sha256:bc912f5d54bae6bb4ff1432ce02a66cae20859b146fa88888b663d00daa7173b"],"state_sha256":"e0b6fd825a41ef8390623fb740db0651c7be53952a6ee0857077a59ea3017aaf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fVxaBHHTdW3tMwSrVgTUWUZimznl5dW4X0sUprnpZsfxROzC44F4RMYWW0g5jPm2nfBEBPdnjRIsn4Fg+oGqDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T04:26:25.106385Z","bundle_sha256":"54ede62d52397adb0e1ba332c2b4b69552d774f0e1102c0ce6a1a3420a463ebf"}}