{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:3YQM5BWUE57PLQQZGTKQE7GITV","short_pith_number":"pith:3YQM5BWU","canonical_record":{"source":{"id":"1802.03219","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-09T12:11:31Z","cross_cats_sorted":[],"title_canon_sha256":"182eda1fd830747815bc39b472b841fbf5b41d10f35457a970e636eb57899d90","abstract_canon_sha256":"18c966ac2c3c61c51405feba45940acdad28d08f9e9184b63b12d5bf31373982"},"schema_version":"1.0"},"canonical_sha256":"de20ce86d4277ef5c21934d5027cc89d74ddab8aba18c47c7f4e6c50eeb0bc9b","source":{"kind":"arxiv","id":"1802.03219","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.03219","created_at":"2026-05-18T00:22:22Z"},{"alias_kind":"arxiv_version","alias_value":"1802.03219v1","created_at":"2026-05-18T00:22:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.03219","created_at":"2026-05-18T00:22:22Z"},{"alias_kind":"pith_short_12","alias_value":"3YQM5BWUE57P","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3YQM5BWUE57PLQQZ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3YQM5BWU","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:3YQM5BWUE57PLQQZGTKQE7GITV","target":"record","payload":{"canonical_record":{"source":{"id":"1802.03219","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-09T12:11:31Z","cross_cats_sorted":[],"title_canon_sha256":"182eda1fd830747815bc39b472b841fbf5b41d10f35457a970e636eb57899d90","abstract_canon_sha256":"18c966ac2c3c61c51405feba45940acdad28d08f9e9184b63b12d5bf31373982"},"schema_version":"1.0"},"canonical_sha256":"de20ce86d4277ef5c21934d5027cc89d74ddab8aba18c47c7f4e6c50eeb0bc9b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:22.520679Z","signature_b64":"a+E3/A+bEF5TQRj+62S8AcxeDMMAEPqBH+/JN8JYmBs9uM912OS/dL8mDUg6QkHFk4gyznxUvD647zsSca9XBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de20ce86d4277ef5c21934d5027cc89d74ddab8aba18c47c7f4e6c50eeb0bc9b","last_reissued_at":"2026-05-18T00:22:22.520166Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:22.520166Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.03219","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":"2026-05-18T00:22:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QY2eTH4m7Tm1VDaiA/2GEdRghk7cDxUX0SvAf7iLrhX4tpzSMeZ+2/pyac2WQDZRMT4R7xhAzpq7LtxgVKemCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:11:40.447904Z"},"content_sha256":"1040c484a64661260b6071fe94f0d497076d64ceea19ec60e84a7566751d40c2","schema_version":"1.0","event_id":"sha256:1040c484a64661260b6071fe94f0d497076d64ceea19ec60e84a7566751d40c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:3YQM5BWUE57PLQQZGTKQE7GITV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An LTE effective temperature scale for red supergiants in the Magellanic clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Gonzalez-Fernandez, H.M. Tabernero, I. Negueruela, R. Dorda","submitted_at":"2018-02-09T12:11:31Z","abstract_excerpt":"We present a self-consistent study of cool supergiants (CSGs) belonging to the Magellanic clouds. We calculated stellar atmospheric parameters using LTE KURUCZ and MARCS atmospheric models for more than 400 individual targets by fitting a careful selection of weak metallic lines. We explore the existence of a T eff scale and its implications in two different metallicity environments (each Magellanic cloud). Critical and in-depth tests have been performed to assess the reliability of our stellar parameters (i.e. internal error budget, NLTE systematics). In addition, several Montercarlo tests ha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.03219","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":"2026-05-18T00:22:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8bcx9j0LsPooOQ6z154qSRvlWimlM8NHJaKJ1j4mEYDa5lqcqIYrYOTzlm93NMl3hn6EEcbncohvwtgGg9L0Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:11:40.448441Z"},"content_sha256":"3581b4ae6a9501fc65f66ef9cd82e5a6de062c5ded107e4e2ef7cce9865e808a","schema_version":"1.0","event_id":"sha256:3581b4ae6a9501fc65f66ef9cd82e5a6de062c5ded107e4e2ef7cce9865e808a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3YQM5BWUE57PLQQZGTKQE7GITV/bundle.json","state_url":"https://pith.science/pith/3YQM5BWUE57PLQQZGTKQE7GITV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3YQM5BWUE57PLQQZGTKQE7GITV/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":"2026-06-01T20:11:40Z","links":{"resolver":"https://pith.science/pith/3YQM5BWUE57PLQQZGTKQE7GITV","bundle":"https://pith.science/pith/3YQM5BWUE57PLQQZGTKQE7GITV/bundle.json","state":"https://pith.science/pith/3YQM5BWUE57PLQQZGTKQE7GITV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3YQM5BWUE57PLQQZGTKQE7GITV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3YQM5BWUE57PLQQZGTKQE7GITV","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":"18c966ac2c3c61c51405feba45940acdad28d08f9e9184b63b12d5bf31373982","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-09T12:11:31Z","title_canon_sha256":"182eda1fd830747815bc39b472b841fbf5b41d10f35457a970e636eb57899d90"},"schema_version":"1.0","source":{"id":"1802.03219","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.03219","created_at":"2026-05-18T00:22:22Z"},{"alias_kind":"arxiv_version","alias_value":"1802.03219v1","created_at":"2026-05-18T00:22:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.03219","created_at":"2026-05-18T00:22:22Z"},{"alias_kind":"pith_short_12","alias_value":"3YQM5BWUE57P","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3YQM5BWUE57PLQQZ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3YQM5BWU","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:3581b4ae6a9501fc65f66ef9cd82e5a6de062c5ded107e4e2ef7cce9865e808a","target":"graph","created_at":"2026-05-18T00:22:22Z","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 self-consistent study of cool supergiants (CSGs) belonging to the Magellanic clouds. We calculated stellar atmospheric parameters using LTE KURUCZ and MARCS atmospheric models for more than 400 individual targets by fitting a careful selection of weak metallic lines. We explore the existence of a T eff scale and its implications in two different metallicity environments (each Magellanic cloud). Critical and in-depth tests have been performed to assess the reliability of our stellar parameters (i.e. internal error budget, NLTE systematics). In addition, several Montercarlo tests ha","authors_text":"C. Gonzalez-Fernandez, H.M. Tabernero, I. Negueruela, R. Dorda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-09T12:11:31Z","title":"An LTE effective temperature scale for red supergiants in the Magellanic clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.03219","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":"sha256:1040c484a64661260b6071fe94f0d497076d64ceea19ec60e84a7566751d40c2","target":"record","created_at":"2026-05-18T00:22:22Z","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":"18c966ac2c3c61c51405feba45940acdad28d08f9e9184b63b12d5bf31373982","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-09T12:11:31Z","title_canon_sha256":"182eda1fd830747815bc39b472b841fbf5b41d10f35457a970e636eb57899d90"},"schema_version":"1.0","source":{"id":"1802.03219","kind":"arxiv","version":1}},"canonical_sha256":"de20ce86d4277ef5c21934d5027cc89d74ddab8aba18c47c7f4e6c50eeb0bc9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de20ce86d4277ef5c21934d5027cc89d74ddab8aba18c47c7f4e6c50eeb0bc9b","first_computed_at":"2026-05-18T00:22:22.520166Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:22:22.520166Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a+E3/A+bEF5TQRj+62S8AcxeDMMAEPqBH+/JN8JYmBs9uM912OS/dL8mDUg6QkHFk4gyznxUvD647zsSca9XBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:22:22.520679Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.03219","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1040c484a64661260b6071fe94f0d497076d64ceea19ec60e84a7566751d40c2","sha256:3581b4ae6a9501fc65f66ef9cd82e5a6de062c5ded107e4e2ef7cce9865e808a"],"state_sha256":"f42bb617e6993bcd12a87b242bb7f46c35a5ffb2499ebfdd564bce0653651754"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zG0vy7LppbujqMCQE+9cIs74bXnNR+SqU64dWjU8KZNBKyrPiSETu0E4kGXeGGVTjOFAGsYPiwdAQ4sQlADTAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T20:11:40.450356Z","bundle_sha256":"e3e191131c6dbcdb091d40f7e9c9aa7af77017bf4f746273d9c6e8783c6bdbf4"}}