{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:D66NRF5JS6NQZOKA6WPBHL2LXK","short_pith_number":"pith:D66NRF5J","canonical_record":{"source":{"id":"1902.03992","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-11T16:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"315fea141d84ae7c1fad95607f5b1e425c25ac066a870b728c35431c30b27994","abstract_canon_sha256":"221bc594603c04043109e0b65b86e2900ca2bfc1e16ad07888fba588fa963198"},"schema_version":"1.0"},"canonical_sha256":"1fbcd897a9979b0cb940f59e13af4bbabe0b5512e921d7bc5770579a3899c67b","source":{"kind":"arxiv","id":"1902.03992","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03992","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03992v1","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03992","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"pith_short_12","alias_value":"D66NRF5JS6NQ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D66NRF5JS6NQZOKA","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D66NRF5J","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:D66NRF5JS6NQZOKA6WPBHL2LXK","target":"record","payload":{"canonical_record":{"source":{"id":"1902.03992","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-11T16:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"315fea141d84ae7c1fad95607f5b1e425c25ac066a870b728c35431c30b27994","abstract_canon_sha256":"221bc594603c04043109e0b65b86e2900ca2bfc1e16ad07888fba588fa963198"},"schema_version":"1.0"},"canonical_sha256":"1fbcd897a9979b0cb940f59e13af4bbabe0b5512e921d7bc5770579a3899c67b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:55.693555Z","signature_b64":"eYvPF8vwmSsJJlHsbqICxMl9x5B4H7RWbRTD0TvwjU0bu5qfMrJEVcm4Fw3A4YhQS6Ku8PyZaycxf89SPP/fCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1fbcd897a9979b0cb940f59e13af4bbabe0b5512e921d7bc5770579a3899c67b","last_reissued_at":"2026-05-17T23:50:55.692997Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:55.692997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.03992","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":"2026-05-17T23:50:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Jn7ZO514z6WIfnpbQ0d72FfL6z3aqGUfvNk5Pil2AjzmTRyGEOj0s+mOu1BLmW4mHI9kHfzXryN231WjJ+9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:28:03.812342Z"},"content_sha256":"8a91e96edb8184380621fa584aaf6c3f576da94bd967a8481c235d636f16c6f4","schema_version":"1.0","event_id":"sha256:8a91e96edb8184380621fa584aaf6c3f576da94bd967a8481c235d636f16c6f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:D66NRF5JS6NQZOKA6WPBHL2LXK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The CARMENES search for exoplanets around M dwarfs. Chromospheric modeling of M2-3 V stars with PHOENIX","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Kaminski, A. Quirrenbach, A. Reiners, A. Schweitzer, B. Fuhrmeister, D. Galad\\'i-Enr\\'iquez, D. Hintz, D. Montes, E. N. Johnson, E. W. Guenther, F. F. Bauer, G. Anglada-Escud\\'e, I. Ribas, J. A. Caballero, J. C. Morales, J. H. M. M. Schmitt, M. Cort\\'es-Contreras, M. K\\\"urster, M. Lafarga, M. L\\'opez del Fresno, M. Zechmeister, P. H. Hauschildt, P. J. Amado, S. Czesla, S. Dreizler, S. V. Jeffers, V. J. S. B\\'ejar, V. M. Passegger, W. Seifert","submitted_at":"2019-02-11T16:51:03Z","abstract_excerpt":"Chromospheric modeling of observed differences in stellar activity lines is imperative to fully understand the upper atmospheres of late-type stars. We present one-dimensional parametrized chromosphere models computed with the atmosphere code PHOENIX using an underlying photosphere of 3500 K. The aim of this work is to model chromospheric lines of a sample of 50 M2-3 dwarfs observed in the framework of the CARMENES, the Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs, exoplanet survey. The spectral comparison between observed "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03992","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":"2026-05-17T23:50:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4e/0bJpVQ36QUF1AryAch4oEwxD7iX3b/DKUrySpwPVdqkukHvApG7qa6ZExd6cnv/h2SFwm6WHfM2YGVCsUAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:28:03.813043Z"},"content_sha256":"356f1f693d028d742a070c09e8fcaa4218ed511d783f7c6f7b764e66bc1a58cd","schema_version":"1.0","event_id":"sha256:356f1f693d028d742a070c09e8fcaa4218ed511d783f7c6f7b764e66bc1a58cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D66NRF5JS6NQZOKA6WPBHL2LXK/bundle.json","state_url":"https://pith.science/pith/D66NRF5JS6NQZOKA6WPBHL2LXK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D66NRF5JS6NQZOKA6WPBHL2LXK/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":"2026-05-25T18:28:03Z","links":{"resolver":"https://pith.science/pith/D66NRF5JS6NQZOKA6WPBHL2LXK","bundle":"https://pith.science/pith/D66NRF5JS6NQZOKA6WPBHL2LXK/bundle.json","state":"https://pith.science/pith/D66NRF5JS6NQZOKA6WPBHL2LXK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D66NRF5JS6NQZOKA6WPBHL2LXK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:D66NRF5JS6NQZOKA6WPBHL2LXK","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":"221bc594603c04043109e0b65b86e2900ca2bfc1e16ad07888fba588fa963198","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-11T16:51:03Z","title_canon_sha256":"315fea141d84ae7c1fad95607f5b1e425c25ac066a870b728c35431c30b27994"},"schema_version":"1.0","source":{"id":"1902.03992","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03992","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03992v1","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03992","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"pith_short_12","alias_value":"D66NRF5JS6NQ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D66NRF5JS6NQZOKA","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D66NRF5J","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:356f1f693d028d742a070c09e8fcaa4218ed511d783f7c6f7b764e66bc1a58cd","target":"graph","created_at":"2026-05-17T23:50:55Z","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":"Chromospheric modeling of observed differences in stellar activity lines is imperative to fully understand the upper atmospheres of late-type stars. We present one-dimensional parametrized chromosphere models computed with the atmosphere code PHOENIX using an underlying photosphere of 3500 K. The aim of this work is to model chromospheric lines of a sample of 50 M2-3 dwarfs observed in the framework of the CARMENES, the Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs, exoplanet survey. The spectral comparison between observed ","authors_text":"A. Kaminski, A. Quirrenbach, A. Reiners, A. Schweitzer, B. Fuhrmeister, D. Galad\\'i-Enr\\'iquez, D. Hintz, D. Montes, E. N. Johnson, E. W. Guenther, F. F. Bauer, G. Anglada-Escud\\'e, I. Ribas, J. A. Caballero, J. C. Morales, J. H. M. M. Schmitt, M. Cort\\'es-Contreras, M. K\\\"urster, M. Lafarga, M. L\\'opez del Fresno, M. Zechmeister, P. H. Hauschildt, P. J. Amado, S. Czesla, S. Dreizler, S. V. Jeffers, V. J. S. B\\'ejar, V. M. Passegger, W. Seifert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-11T16:51:03Z","title":"The CARMENES search for exoplanets around M dwarfs. Chromospheric modeling of M2-3 V stars with PHOENIX"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03992","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":"sha256:8a91e96edb8184380621fa584aaf6c3f576da94bd967a8481c235d636f16c6f4","target":"record","created_at":"2026-05-17T23:50:55Z","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":"221bc594603c04043109e0b65b86e2900ca2bfc1e16ad07888fba588fa963198","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-11T16:51:03Z","title_canon_sha256":"315fea141d84ae7c1fad95607f5b1e425c25ac066a870b728c35431c30b27994"},"schema_version":"1.0","source":{"id":"1902.03992","kind":"arxiv","version":1}},"canonical_sha256":"1fbcd897a9979b0cb940f59e13af4bbabe0b5512e921d7bc5770579a3899c67b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1fbcd897a9979b0cb940f59e13af4bbabe0b5512e921d7bc5770579a3899c67b","first_computed_at":"2026-05-17T23:50:55.692997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:55.692997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eYvPF8vwmSsJJlHsbqICxMl9x5B4H7RWbRTD0TvwjU0bu5qfMrJEVcm4Fw3A4YhQS6Ku8PyZaycxf89SPP/fCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:55.693555Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.03992","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a91e96edb8184380621fa584aaf6c3f576da94bd967a8481c235d636f16c6f4","sha256:356f1f693d028d742a070c09e8fcaa4218ed511d783f7c6f7b764e66bc1a58cd"],"state_sha256":"608195c7970aa97f744e77c1312e218302649b2aeeda06ec6bdc80a688e4aa2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5GHbvw9gyzLYg0j+chCh8qLHCE+grP1+9ugmk1KSLLHHrAe7bKaxzOpIMxk9SkhpEhq7fizZjT/1kMyvEE32DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:28:03.817721Z","bundle_sha256":"dbc4213429d70fe38a928ed68a6dfa8aa9c08e0b52041ff458ce8a63db364881"}}