{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:2VOSHG3PUA3TSQXP5TZF2LSC23","short_pith_number":"pith:2VOSHG3P","schema_version":"1.0","canonical_sha256":"d55d239b6fa0373942efecf25d2e42d6cdbb1f32cf3c3d65df025cdf2db1f2f4","source":{"kind":"arxiv","id":"1810.09625","version":2},"attestation_state":"computed","paper":{"title":"New hot subdwarf stars identified in Gaia DR2 with LAMOST DR5 spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Gang Zhao, Jingkun Zhao, N\\'emeth P\\'eter, Zhenxin Lei","submitted_at":"2018-10-23T01:57:49Z","abstract_excerpt":"We selected 4593 hot subdwarf candidates from the Gaia DR2 Hertzsprung-Russell (HR) diagram. By combining the sample with LAMOST DR5, we identified 294 hot subdwarf stars, including 169 sdB, 63 sdOB, 31 He-sdOB, 22 sdO, 7 He-sdO and 2 He-sdB stars. The atmospheric parameters (e.g., T_{eff} , log g, log(nHe/nH)) are obtained by fitting the hydrogen (H) and helium (He) line profiles with synthetic spectra. Two distinct He sequences of hot subdwarf stars are clearly presented in the T_{eff} - log g diagram. We found that the He-rich sequence consists of the bulk of sdB and sdOB stars as well as a"},"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":"1810.09625","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-23T01:57:49Z","cross_cats_sorted":[],"title_canon_sha256":"efb76ff6a670950f1b782c9e18891223b0c0910ffefaf1016184d037fba75b2e","abstract_canon_sha256":"b5de2c694b7fc4fe4e694c5f8e787b20e9f8a3ea57e30f047e0e60c6ada016f6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:58.174333Z","signature_b64":"C93HHuTt8f/NdeVA6shO5/uULnSVh2A/Ru9cFE4NYoZ/gAK+E85V6WdEveT761gMQHHhk/oXOB9hcPtngoZcBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d55d239b6fa0373942efecf25d2e42d6cdbb1f32cf3c3d65df025cdf2db1f2f4","last_reissued_at":"2026-05-17T23:41:58.173563Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:58.173563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New hot subdwarf stars identified in Gaia DR2 with LAMOST DR5 spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Gang Zhao, Jingkun Zhao, N\\'emeth P\\'eter, Zhenxin Lei","submitted_at":"2018-10-23T01:57:49Z","abstract_excerpt":"We selected 4593 hot subdwarf candidates from the Gaia DR2 Hertzsprung-Russell (HR) diagram. By combining the sample with LAMOST DR5, we identified 294 hot subdwarf stars, including 169 sdB, 63 sdOB, 31 He-sdOB, 22 sdO, 7 He-sdO and 2 He-sdB stars. The atmospheric parameters (e.g., T_{eff} , log g, log(nHe/nH)) are obtained by fitting the hydrogen (H) and helium (He) line profiles with synthetic spectra. Two distinct He sequences of hot subdwarf stars are clearly presented in the T_{eff} - log g diagram. We found that the He-rich sequence consists of the bulk of sdB and sdOB stars as well as a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09625","kind":"arxiv","version":2},"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":"1810.09625","created_at":"2026-05-17T23:41:58.173699+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.09625v2","created_at":"2026-05-17T23:41:58.173699+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09625","created_at":"2026-05-17T23:41:58.173699+00:00"},{"alias_kind":"pith_short_12","alias_value":"2VOSHG3PUA3T","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"2VOSHG3PUA3TSQXP","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"2VOSHG3P","created_at":"2026-05-18T12:32:02.567920+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2606.29918","citing_title":"MSFA-Net: An Advanced Deep Learning Model for Identifying Blue Horizontal-Branch Stars from LAMOST DR12","ref_index":18,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23","json":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23.json","graph_json":"https://pith.science/api/pith-number/2VOSHG3PUA3TSQXP5TZF2LSC23/graph.json","events_json":"https://pith.science/api/pith-number/2VOSHG3PUA3TSQXP5TZF2LSC23/events.json","paper":"https://pith.science/paper/2VOSHG3P"},"agent_actions":{"view_html":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23","download_json":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23.json","view_paper":"https://pith.science/paper/2VOSHG3P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.09625&json=true","fetch_graph":"https://pith.science/api/pith-number/2VOSHG3PUA3TSQXP5TZF2LSC23/graph.json","fetch_events":"https://pith.science/api/pith-number/2VOSHG3PUA3TSQXP5TZF2LSC23/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23/action/storage_attestation","attest_author":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23/action/author_attestation","sign_citation":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23/action/citation_signature","submit_replication":"https://pith.science/pith/2VOSHG3PUA3TSQXP5TZF2LSC23/action/replication_record"}},"created_at":"2026-05-17T23:41:58.173699+00:00","updated_at":"2026-05-17T23:41:58.173699+00:00"}