{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:EGM6A4ZB3TBFZSZBUAF2H2L2SO","short_pith_number":"pith:EGM6A4ZB","schema_version":"1.0","canonical_sha256":"2199e07321dcc25ccb21a00ba3e97a93bab4015016e126425101590d0e2ef9a9","source":{"kind":"arxiv","id":"1407.2259","version":1},"attestation_state":"computed","paper":{"title":"Luminous and Variable Stars in M31 and M33. II. Luminous Blue Variables, Candidate LBVs, Fe II Emission Line Stars, and Other Supergiants","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Birgitta Burggraf, D. J. Bomans, Kerstin Weis, Kris Davidson, Roberta M. Humphreys","submitted_at":"2014-07-08T20:06:16Z","abstract_excerpt":"An increasing number of non-terminal eruptions are being found in the numerous surveys for optical transients. Very little is known about these giant eruptions, their progenitors and their evolutionary state. A greatly improved census of the likely progenitor class, including the most luminous evolved stars, the Luminous Blue Varaibles (LBVs), and the warm and cool hypergiants is now needed for a complete picture of the final pre-SN stages of very massive stars. We have begun a survey of the evolved and un stable luminous star populations in several nearby resolved galaxies. In this second pap"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1407.2259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-07-08T20:06:16Z","cross_cats_sorted":[],"title_canon_sha256":"ad983603f18521608f810455da007b551a42feecbc77782214480ade03127cc7","abstract_canon_sha256":"d0ce04213ae891af5772cc83c6e916dac6cfacee8020bc80e6f1aaffe78f59f6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:40.683644Z","signature_b64":"Phn9A1ErOuSWjTl31mfOLsop768VWyL+w2AaFWx8CVERHtYnDppRpoDuaMra80ybRMmQr407D2r8Vt4VJfNaDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2199e07321dcc25ccb21a00ba3e97a93bab4015016e126425101590d0e2ef9a9","last_reissued_at":"2026-05-18T01:42:40.683144Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:40.683144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Luminous and Variable Stars in M31 and M33. II. Luminous Blue Variables, Candidate LBVs, Fe II Emission Line Stars, and Other Supergiants","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Birgitta Burggraf, D. J. Bomans, Kerstin Weis, Kris Davidson, Roberta M. Humphreys","submitted_at":"2014-07-08T20:06:16Z","abstract_excerpt":"An increasing number of non-terminal eruptions are being found in the numerous surveys for optical transients. Very little is known about these giant eruptions, their progenitors and their evolutionary state. A greatly improved census of the likely progenitor class, including the most luminous evolved stars, the Luminous Blue Varaibles (LBVs), and the warm and cool hypergiants is now needed for a complete picture of the final pre-SN stages of very massive stars. We have begun a survey of the evolved and un stable luminous star populations in several nearby resolved galaxies. In this second pap"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2259","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1407.2259","created_at":"2026-05-18T01:42:40.683209+00:00"},{"alias_kind":"arxiv_version","alias_value":"1407.2259v1","created_at":"2026-05-18T01:42:40.683209+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2259","created_at":"2026-05-18T01:42:40.683209+00:00"},{"alias_kind":"pith_short_12","alias_value":"EGM6A4ZB3TBF","created_at":"2026-05-18T12:28:25.294606+00:00"},{"alias_kind":"pith_short_16","alias_value":"EGM6A4ZB3TBFZSZB","created_at":"2026-05-18T12:28:25.294606+00:00"},{"alias_kind":"pith_short_8","alias_value":"EGM6A4ZB","created_at":"2026-05-18T12:28:25.294606+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO","json":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO.json","graph_json":"https://pith.science/api/pith-number/EGM6A4ZB3TBFZSZBUAF2H2L2SO/graph.json","events_json":"https://pith.science/api/pith-number/EGM6A4ZB3TBFZSZBUAF2H2L2SO/events.json","paper":"https://pith.science/paper/EGM6A4ZB"},"agent_actions":{"view_html":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO","download_json":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO.json","view_paper":"https://pith.science/paper/EGM6A4ZB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1407.2259&json=true","fetch_graph":"https://pith.science/api/pith-number/EGM6A4ZB3TBFZSZBUAF2H2L2SO/graph.json","fetch_events":"https://pith.science/api/pith-number/EGM6A4ZB3TBFZSZBUAF2H2L2SO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO/action/storage_attestation","attest_author":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO/action/author_attestation","sign_citation":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO/action/citation_signature","submit_replication":"https://pith.science/pith/EGM6A4ZB3TBFZSZBUAF2H2L2SO/action/replication_record"}},"created_at":"2026-05-18T01:42:40.683209+00:00","updated_at":"2026-05-18T01:42:40.683209+00:00"}