{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JI2KF55NYONVNPJDOV6F2ADGWF","short_pith_number":"pith:JI2KF55N","canonical_record":{"source":{"id":"1309.4274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-17T12:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"561925e8268130dd1826df9c51eb9cd9234c9b574006744a7fdf94ae43273f89","abstract_canon_sha256":"dd525acf41d1cdd337810429749c7681cce2f786cf7d2188ccf6c385689aaa3b"},"schema_version":"1.0"},"canonical_sha256":"4a34a2f7adc39b56bd23757c5d0066b142b943644126fe46b362e076578dea3a","source":{"kind":"arxiv","id":"1309.4274","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4274","created_at":"2026-05-18T01:47:36Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4274v1","created_at":"2026-05-18T01:47:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4274","created_at":"2026-05-18T01:47:36Z"},{"alias_kind":"pith_short_12","alias_value":"JI2KF55NYONV","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JI2KF55NYONVNPJD","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JI2KF55N","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JI2KF55NYONVNPJDOV6F2ADGWF","target":"record","payload":{"canonical_record":{"source":{"id":"1309.4274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-17T12:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"561925e8268130dd1826df9c51eb9cd9234c9b574006744a7fdf94ae43273f89","abstract_canon_sha256":"dd525acf41d1cdd337810429749c7681cce2f786cf7d2188ccf6c385689aaa3b"},"schema_version":"1.0"},"canonical_sha256":"4a34a2f7adc39b56bd23757c5d0066b142b943644126fe46b362e076578dea3a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:36.687409Z","signature_b64":"Ufb2D5GyJP5mhr7HFhCvkKQ/6eHFnPgPP2SzwKXvlMH9VSeUxsFLL005Xa+XA4QK9GsqlcqRtehwdRr8saXJCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a34a2f7adc39b56bd23757c5d0066b142b943644126fe46b362e076578dea3a","last_reissued_at":"2026-05-18T01:47:36.686815Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:36.686815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.4274","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":"2026-05-18T01:47:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p59pfo7bAS/6b4CeceLELv9xRVpYJ0DLlBRLhqtWQQaoZOndA4wlHpP/mExx08LJo7sNB5A4Q0SkE2QM4krZCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T15:04:20.591273Z"},"content_sha256":"0c4c3daf7c0a44594786af172ccd3f7a2eebce7d0c75c9241d6e375b0fe21d31","schema_version":"1.0","event_id":"sha256:0c4c3daf7c0a44594786af172ccd3f7a2eebce7d0c75c9241d6e375b0fe21d31"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JI2KF55NYONVNPJDOV6F2ADGWF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chromospherically Active Stars in the RAVE Survey. I. The Catalogue","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Siviero, C. Boeche, E. K. Grebel, G. Kordopatis, G. Matijevi\\v{c}, G. Seabroke, J. Bland-Hawthorn, J. F. Navarro, K. C. Freeman, K. G. Strassmeier, M. Steinmetz, M. \\v{Z}erjal, O. Bienaym\\'e, Q. A. Parker, R. F. G. Wyse, T. Zwitter, U. Munari, W. Reid","submitted_at":"2013-09-17T12:00:05Z","abstract_excerpt":"RAVE, the unbiased magnitude limited survey of the southern sky stars, contained 456,676 medium-resolution spectra at the time of our analysis. Spectra cover the CaII IRT range which is a known indicator of chromospheric activity. Our previous work (Matijevi\\v{c} et al. 2012) classified all spectra using locally linear embedding. It identified 53,347 cases with a suggested emission component in calcium lines. Here we use a spectral subtraction technique to measure the properties of this emission. Synthetic templates are replaced by the observed spectra of non-active stars to bypass the difficu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4274","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":"2026-05-18T01:47:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c6LSe36Vb77GBO0rFueNDEzKVn9ihHu5y2rfyQCwrGRZkO8o1m371ADiF4acQKwBLd/TQ4hsPXks9yEREWTFAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T15:04:20.591935Z"},"content_sha256":"911e87351d5c5b45f8f945d84a53feb46ac9309a24260663a9261babb2f840da","schema_version":"1.0","event_id":"sha256:911e87351d5c5b45f8f945d84a53feb46ac9309a24260663a9261babb2f840da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JI2KF55NYONVNPJDOV6F2ADGWF/bundle.json","state_url":"https://pith.science/pith/JI2KF55NYONVNPJDOV6F2ADGWF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JI2KF55NYONVNPJDOV6F2ADGWF/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":"2026-05-28T15:04:20Z","links":{"resolver":"https://pith.science/pith/JI2KF55NYONVNPJDOV6F2ADGWF","bundle":"https://pith.science/pith/JI2KF55NYONVNPJDOV6F2ADGWF/bundle.json","state":"https://pith.science/pith/JI2KF55NYONVNPJDOV6F2ADGWF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JI2KF55NYONVNPJDOV6F2ADGWF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JI2KF55NYONVNPJDOV6F2ADGWF","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":"dd525acf41d1cdd337810429749c7681cce2f786cf7d2188ccf6c385689aaa3b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-17T12:00:05Z","title_canon_sha256":"561925e8268130dd1826df9c51eb9cd9234c9b574006744a7fdf94ae43273f89"},"schema_version":"1.0","source":{"id":"1309.4274","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4274","created_at":"2026-05-18T01:47:36Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4274v1","created_at":"2026-05-18T01:47:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4274","created_at":"2026-05-18T01:47:36Z"},{"alias_kind":"pith_short_12","alias_value":"JI2KF55NYONV","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JI2KF55NYONVNPJD","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JI2KF55N","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:911e87351d5c5b45f8f945d84a53feb46ac9309a24260663a9261babb2f840da","target":"graph","created_at":"2026-05-18T01:47:36Z","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":"RAVE, the unbiased magnitude limited survey of the southern sky stars, contained 456,676 medium-resolution spectra at the time of our analysis. Spectra cover the CaII IRT range which is a known indicator of chromospheric activity. Our previous work (Matijevi\\v{c} et al. 2012) classified all spectra using locally linear embedding. It identified 53,347 cases with a suggested emission component in calcium lines. Here we use a spectral subtraction technique to measure the properties of this emission. Synthetic templates are replaced by the observed spectra of non-active stars to bypass the difficu","authors_text":"A. Siviero, C. Boeche, E. K. Grebel, G. Kordopatis, G. Matijevi\\v{c}, G. Seabroke, J. Bland-Hawthorn, J. F. Navarro, K. C. Freeman, K. G. Strassmeier, M. Steinmetz, M. \\v{Z}erjal, O. Bienaym\\'e, Q. A. Parker, R. F. G. Wyse, T. Zwitter, U. Munari, W. Reid","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-17T12:00:05Z","title":"Chromospherically Active Stars in the RAVE Survey. I. The Catalogue"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4274","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":"sha256:0c4c3daf7c0a44594786af172ccd3f7a2eebce7d0c75c9241d6e375b0fe21d31","target":"record","created_at":"2026-05-18T01:47:36Z","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":"dd525acf41d1cdd337810429749c7681cce2f786cf7d2188ccf6c385689aaa3b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-09-17T12:00:05Z","title_canon_sha256":"561925e8268130dd1826df9c51eb9cd9234c9b574006744a7fdf94ae43273f89"},"schema_version":"1.0","source":{"id":"1309.4274","kind":"arxiv","version":1}},"canonical_sha256":"4a34a2f7adc39b56bd23757c5d0066b142b943644126fe46b362e076578dea3a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a34a2f7adc39b56bd23757c5d0066b142b943644126fe46b362e076578dea3a","first_computed_at":"2026-05-18T01:47:36.686815Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:36.686815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ufb2D5GyJP5mhr7HFhCvkKQ/6eHFnPgPP2SzwKXvlMH9VSeUxsFLL005Xa+XA4QK9GsqlcqRtehwdRr8saXJCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:36.687409Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.4274","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c4c3daf7c0a44594786af172ccd3f7a2eebce7d0c75c9241d6e375b0fe21d31","sha256:911e87351d5c5b45f8f945d84a53feb46ac9309a24260663a9261babb2f840da"],"state_sha256":"2ee1bcd002232d8c6db2c6ec8d59efef3ec2a7215db9f3f1c35f1cc009365738"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SMP+EB8ErEWr+DEWuSj0+QHUINqjOyZ36qwaYlxxnWf3ievLd1MroxCxx/5yubQAz8me33e1jE1UA9Woq0LRAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T15:04:20.594879Z","bundle_sha256":"1fef847b8280394f1d91427ce968512e22befe664d00c00ad4bd6c18205118d2"}}