{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:T2NWGATXNP3BAJ7HCZS7OPTPWR","short_pith_number":"pith:T2NWGATX","schema_version":"1.0","canonical_sha256":"9e9b6302776bf61027e71665f73e6fb45f5d29db20759f20e6f74adda3aee419","source":{"kind":"arxiv","id":"1301.4129","version":1},"attestation_state":"computed","paper":{"title":"The subdwarf B star SB 290 - A fast rotator on the extreme horizontal branch","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Heuser, H. Edelmann, L. Classen, S. Geier, S. J. O'Toole, U. Heber","submitted_at":"2013-01-17T15:46:08Z","abstract_excerpt":"Hot subdwarf B stars (sdBs) are evolved core helium-burning stars with very thin hydrogen envelopes. In order to form an sdB, the progenitor has to lose almost all of its hydrogen envelope right at the tip of the red giant branch. In close binary systems, mass transfer to the companion provides the extraordinary mass loss required for their formation. However, apparently single sdBs exist as well and their formation is unclear since decades. The merger of helium white dwarfs leading to an ignition of core helium-burning or the merger of a helium core and a low mass star during the common envel"},"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":"1301.4129","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-17T15:46:08Z","cross_cats_sorted":[],"title_canon_sha256":"0877ab9f4a81dc3d8dcd9c1f2321b6d8803d7ecac3818bdac84c4012f1af7cf4","abstract_canon_sha256":"9e38e322af5afaeefd7ca409511ed40b2839ab5781248232ecae1405cf6e1194"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:06.216747Z","signature_b64":"31VCGHUbnwqMB6v0UPNVOPcLhwtKqfEbhOwd67/wlhtZpDSno+XCoNj5Q+1LxfyjQQ52Bd9tT+9I3a58c2QtCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e9b6302776bf61027e71665f73e6fb45f5d29db20759f20e6f74adda3aee419","last_reissued_at":"2026-05-18T01:52:06.216327Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:06.216327Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The subdwarf B star SB 290 - A fast rotator on the extreme horizontal branch","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Heuser, H. Edelmann, L. Classen, S. Geier, S. J. O'Toole, U. Heber","submitted_at":"2013-01-17T15:46:08Z","abstract_excerpt":"Hot subdwarf B stars (sdBs) are evolved core helium-burning stars with very thin hydrogen envelopes. In order to form an sdB, the progenitor has to lose almost all of its hydrogen envelope right at the tip of the red giant branch. In close binary systems, mass transfer to the companion provides the extraordinary mass loss required for their formation. However, apparently single sdBs exist as well and their formation is unclear since decades. The merger of helium white dwarfs leading to an ignition of core helium-burning or the merger of a helium core and a low mass star during the common envel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4129","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":"1301.4129","created_at":"2026-05-18T01:52:06.216392+00:00"},{"alias_kind":"arxiv_version","alias_value":"1301.4129v1","created_at":"2026-05-18T01:52:06.216392+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4129","created_at":"2026-05-18T01:52:06.216392+00:00"},{"alias_kind":"pith_short_12","alias_value":"T2NWGATXNP3B","created_at":"2026-05-18T12:27:59.945178+00:00"},{"alias_kind":"pith_short_16","alias_value":"T2NWGATXNP3BAJ7H","created_at":"2026-05-18T12:27:59.945178+00:00"},{"alias_kind":"pith_short_8","alias_value":"T2NWGATX","created_at":"2026-05-18T12:27:59.945178+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/T2NWGATXNP3BAJ7HCZS7OPTPWR","json":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR.json","graph_json":"https://pith.science/api/pith-number/T2NWGATXNP3BAJ7HCZS7OPTPWR/graph.json","events_json":"https://pith.science/api/pith-number/T2NWGATXNP3BAJ7HCZS7OPTPWR/events.json","paper":"https://pith.science/paper/T2NWGATX"},"agent_actions":{"view_html":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR","download_json":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR.json","view_paper":"https://pith.science/paper/T2NWGATX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1301.4129&json=true","fetch_graph":"https://pith.science/api/pith-number/T2NWGATXNP3BAJ7HCZS7OPTPWR/graph.json","fetch_events":"https://pith.science/api/pith-number/T2NWGATXNP3BAJ7HCZS7OPTPWR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR/action/storage_attestation","attest_author":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR/action/author_attestation","sign_citation":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR/action/citation_signature","submit_replication":"https://pith.science/pith/T2NWGATXNP3BAJ7HCZS7OPTPWR/action/replication_record"}},"created_at":"2026-05-18T01:52:06.216392+00:00","updated_at":"2026-05-18T01:52:06.216392+00:00"}