{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:GEOYFVOIQYQ3W7GUFMRTNUY5NP","short_pith_number":"pith:GEOYFVOI","canonical_record":{"source":{"id":"0903.3141","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-18T11:54:09Z","cross_cats_sorted":[],"title_canon_sha256":"13cc6f79ed1e0b748e4f7a01ec65337369e4c460dc199db24c2af926310c7505","abstract_canon_sha256":"fc9f7015312d8b16e8317edb853171b5d115b7b67c6e21d2b61519b3b3d8f3c0"},"schema_version":"1.0"},"canonical_sha256":"311d82d5c88621bb7cd42b2336d31d6bdbceed6acb3da7e7f21ddb4c1912565e","source":{"kind":"arxiv","id":"0903.3141","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.3141","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"arxiv_version","alias_value":"0903.3141v1","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.3141","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"pith_short_12","alias_value":"GEOYFVOIQYQ3","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GEOYFVOIQYQ3W7GU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GEOYFVOI","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:GEOYFVOIQYQ3W7GUFMRTNUY5NP","target":"record","payload":{"canonical_record":{"source":{"id":"0903.3141","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-18T11:54:09Z","cross_cats_sorted":[],"title_canon_sha256":"13cc6f79ed1e0b748e4f7a01ec65337369e4c460dc199db24c2af926310c7505","abstract_canon_sha256":"fc9f7015312d8b16e8317edb853171b5d115b7b67c6e21d2b61519b3b3d8f3c0"},"schema_version":"1.0"},"canonical_sha256":"311d82d5c88621bb7cd42b2336d31d6bdbceed6acb3da7e7f21ddb4c1912565e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:00.338650Z","signature_b64":"OiHV1mRbjrJfCdiepmqJbfGW5jBgX5tGox+oHm1YLM1WvIbksXq+myqaNpRPeQhrCoHBnjs38dEKT1EvpQwsCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"311d82d5c88621bb7cd42b2336d31d6bdbceed6acb3da7e7f21ddb4c1912565e","last_reissued_at":"2026-05-18T02:35:00.338243Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:00.338243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.3141","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":"2026-05-18T02:35:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UBaY8PGwCJcsAoGoPaPWGvRZdHeuvY8UWeqAQzhwSrvPi1DJjNhJqomR5OzL5uBz2vYOFnEZ3zj87FzYSQWOAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:59:39.721065Z"},"content_sha256":"842d9b5f835e243e67749253cc37d42e35cb65565a826ca4fec0c79d9bcf7108","schema_version":"1.0","event_id":"sha256:842d9b5f835e243e67749253cc37d42e35cb65565a826ca4fec0c79d9bcf7108"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:GEOYFVOIQYQ3W7GUFMRTNUY5NP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The young active star SAO 51891 (V383 Lac)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) INAF - Capodimonte Astronomical Observatory, (3) Ege University, (4) Strasbourg Astronomical Observatory, (5) Steward Observatory, 6, (6) INAF - Arcetri Astrophysical Observatory, 7), (7) ESO - European Southern Observatory), Alexis Klutsch (4), Antonio Frasca (1), Elvira Covino (2), Ettore Marilli (1), Juan M. Alcala' (2), Katia Biazzo (1, Michael R. Meyer (5) ((1) INAF - Catania Astrophysical Observatory, Omur Cakirli (3)","submitted_at":"2009-03-18T11:54:09Z","abstract_excerpt":"Our aim is investigating surface inhomogeneities of the young late-type star SAO51891, from photosphere to upper chromosphere, analyzing contemporaneous high-resolution spectra and broad-band photometry. The FOCES@CAHA spectral range is used to determine spectral classification and derive vsini and Vrad. The Li abundance is measured to estimate the age. The BVRIJHKs bands are used to construct the SED. The variations of our BV fluxes and Teff are used to infer the presence of photospheric spots and observe their behavior over time. The chromospheric activity is studied applying the spectral su"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.3141","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":"2026-05-18T02:35:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a453fV89z6wRdq1seCoq8XGm9xcm9oCMmT2hyJZToXZHqhpWcDD+l4tTfHgRKZG/i5uknoqXujJrPeQOUJciDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:59:39.721473Z"},"content_sha256":"edd2f6b7bbee1934ee77a4f6aa030dc1436dec43cd42993d21912c10a022b402","schema_version":"1.0","event_id":"sha256:edd2f6b7bbee1934ee77a4f6aa030dc1436dec43cd42993d21912c10a022b402"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP/bundle.json","state_url":"https://pith.science/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP/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":"2026-06-03T07:59:39Z","links":{"resolver":"https://pith.science/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP","bundle":"https://pith.science/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP/bundle.json","state":"https://pith.science/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GEOYFVOIQYQ3W7GUFMRTNUY5NP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:GEOYFVOIQYQ3W7GUFMRTNUY5NP","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":"fc9f7015312d8b16e8317edb853171b5d115b7b67c6e21d2b61519b3b3d8f3c0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-18T11:54:09Z","title_canon_sha256":"13cc6f79ed1e0b748e4f7a01ec65337369e4c460dc199db24c2af926310c7505"},"schema_version":"1.0","source":{"id":"0903.3141","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.3141","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"arxiv_version","alias_value":"0903.3141v1","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.3141","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"pith_short_12","alias_value":"GEOYFVOIQYQ3","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GEOYFVOIQYQ3W7GU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GEOYFVOI","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:edd2f6b7bbee1934ee77a4f6aa030dc1436dec43cd42993d21912c10a022b402","target":"graph","created_at":"2026-05-18T02:35:00Z","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":"Our aim is investigating surface inhomogeneities of the young late-type star SAO51891, from photosphere to upper chromosphere, analyzing contemporaneous high-resolution spectra and broad-band photometry. The FOCES@CAHA spectral range is used to determine spectral classification and derive vsini and Vrad. The Li abundance is measured to estimate the age. The BVRIJHKs bands are used to construct the SED. The variations of our BV fluxes and Teff are used to infer the presence of photospheric spots and observe their behavior over time. The chromospheric activity is studied applying the spectral su","authors_text":"(2) INAF - Capodimonte Astronomical Observatory, (3) Ege University, (4) Strasbourg Astronomical Observatory, (5) Steward Observatory, 6, (6) INAF - Arcetri Astrophysical Observatory, 7), (7) ESO - European Southern Observatory), Alexis Klutsch (4), Antonio Frasca (1), Elvira Covino (2), Ettore Marilli (1), Juan M. Alcala' (2), Katia Biazzo (1, Michael R. Meyer (5) ((1) INAF - Catania Astrophysical Observatory, Omur Cakirli (3)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-18T11:54:09Z","title":"The young active star SAO 51891 (V383 Lac)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.3141","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":"sha256:842d9b5f835e243e67749253cc37d42e35cb65565a826ca4fec0c79d9bcf7108","target":"record","created_at":"2026-05-18T02:35:00Z","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":"fc9f7015312d8b16e8317edb853171b5d115b7b67c6e21d2b61519b3b3d8f3c0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-18T11:54:09Z","title_canon_sha256":"13cc6f79ed1e0b748e4f7a01ec65337369e4c460dc199db24c2af926310c7505"},"schema_version":"1.0","source":{"id":"0903.3141","kind":"arxiv","version":1}},"canonical_sha256":"311d82d5c88621bb7cd42b2336d31d6bdbceed6acb3da7e7f21ddb4c1912565e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"311d82d5c88621bb7cd42b2336d31d6bdbceed6acb3da7e7f21ddb4c1912565e","first_computed_at":"2026-05-18T02:35:00.338243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:00.338243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OiHV1mRbjrJfCdiepmqJbfGW5jBgX5tGox+oHm1YLM1WvIbksXq+myqaNpRPeQhrCoHBnjs38dEKT1EvpQwsCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:00.338650Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.3141","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:842d9b5f835e243e67749253cc37d42e35cb65565a826ca4fec0c79d9bcf7108","sha256:edd2f6b7bbee1934ee77a4f6aa030dc1436dec43cd42993d21912c10a022b402"],"state_sha256":"ebd01d13f3e145ac54a9b8902891d4a579a9dc75e364dfebd5401129eae66d22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lcKmw5WVfdpWOygIHI0WLxZ+Mk2/cz5ekBiRaUZkOkzAly6s1dRPE3g/6dqTiQW+tTqgl8rneKG+CUSPRKlICg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T07:59:39.723464Z","bundle_sha256":"bfd8c06750993767a9cdc62ca7edf887770d711525e4255b05055cad15ee46e0"}}