{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:I6ALYEBRZQXBQFBLBXTXJCHJDP","short_pith_number":"pith:I6ALYEBR","schema_version":"1.0","canonical_sha256":"4780bc1031cc2e18142b0de77488e91bf170c328590430367307aa3b32f5fc6f","source":{"kind":"arxiv","id":"1807.07456","version":1},"attestation_state":"computed","paper":{"title":"An atlas of cool supergiants from the Magellanic Clouds and typical interlopers. A guide for the classification of luminous red stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Amparo Marco, Carlos Gonz\\'alez-Fern\\'andez, Ignacio Negueruela, Ricardo Dorda","submitted_at":"2018-07-19T14:16:02Z","abstract_excerpt":"We present an atlas composed of more than 1500 spectra of late-type stars (spectral types from G to M) observed simultaneously in the optical and calcium triplet spectral ranges. These spectra were obtained as part of a survey to search for cool supergiants in the Magellanic Clouds and were taken over four epochs. We provide the spectral and luminosity classification for each spectrum (71% are supergiants, 13% are giants or luminous giants, 4% are carbon or S stars, and the remaining 12% are foreground stars of lesser luminosities). We also provide a detailed guide for the spectral classificat"},"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":"1807.07456","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-19T14:16:02Z","cross_cats_sorted":[],"title_canon_sha256":"18f52614a5c3388dd449df160e5b7ab7068f546473354f78c271df5fa70cab4f","abstract_canon_sha256":"c3bc5a8a010dce4c56c646965b357ed702f605ec0e30c6e17ef4454ce081ec57"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:29.893385Z","signature_b64":"0OSgAFafcQcigsRhyLp4s5xoNeSZHOm21cwZPwMgsCFSYhZ+NR/2KZ4p0nwlwmKFlgezqnSMdY9VzyU/TwWlAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4780bc1031cc2e18142b0de77488e91bf170c328590430367307aa3b32f5fc6f","last_reissued_at":"2026-05-18T00:00:29.892941Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:29.892941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An atlas of cool supergiants from the Magellanic Clouds and typical interlopers. A guide for the classification of luminous red stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Amparo Marco, Carlos Gonz\\'alez-Fern\\'andez, Ignacio Negueruela, Ricardo Dorda","submitted_at":"2018-07-19T14:16:02Z","abstract_excerpt":"We present an atlas composed of more than 1500 spectra of late-type stars (spectral types from G to M) observed simultaneously in the optical and calcium triplet spectral ranges. These spectra were obtained as part of a survey to search for cool supergiants in the Magellanic Clouds and were taken over four epochs. We provide the spectral and luminosity classification for each spectrum (71% are supergiants, 13% are giants or luminous giants, 4% are carbon or S stars, and the remaining 12% are foreground stars of lesser luminosities). We also provide a detailed guide for the spectral classificat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.07456","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":"1807.07456","created_at":"2026-05-18T00:00:29.893008+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.07456v1","created_at":"2026-05-18T00:00:29.893008+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.07456","created_at":"2026-05-18T00:00:29.893008+00:00"},{"alias_kind":"pith_short_12","alias_value":"I6ALYEBRZQXB","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_16","alias_value":"I6ALYEBRZQXBQFBL","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_8","alias_value":"I6ALYEBR","created_at":"2026-05-18T12:32:28.185984+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/I6ALYEBRZQXBQFBLBXTXJCHJDP","json":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP.json","graph_json":"https://pith.science/api/pith-number/I6ALYEBRZQXBQFBLBXTXJCHJDP/graph.json","events_json":"https://pith.science/api/pith-number/I6ALYEBRZQXBQFBLBXTXJCHJDP/events.json","paper":"https://pith.science/paper/I6ALYEBR"},"agent_actions":{"view_html":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP","download_json":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP.json","view_paper":"https://pith.science/paper/I6ALYEBR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.07456&json=true","fetch_graph":"https://pith.science/api/pith-number/I6ALYEBRZQXBQFBLBXTXJCHJDP/graph.json","fetch_events":"https://pith.science/api/pith-number/I6ALYEBRZQXBQFBLBXTXJCHJDP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP/action/storage_attestation","attest_author":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP/action/author_attestation","sign_citation":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP/action/citation_signature","submit_replication":"https://pith.science/pith/I6ALYEBRZQXBQFBLBXTXJCHJDP/action/replication_record"}},"created_at":"2026-05-18T00:00:29.893008+00:00","updated_at":"2026-05-18T00:00:29.893008+00:00"}