{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:6OBI6BMVJ63YL4Z2MHONE34GBL","short_pith_number":"pith:6OBI6BMV","schema_version":"1.0","canonical_sha256":"f3828f05954fb785f33a61dcd26f860af9eccca5233af50b4d749042925134ae","source":{"kind":"arxiv","id":"0909.2742","version":1},"attestation_state":"computed","paper":{"title":"Very low mass white dwarfs with a C-O core","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"2), O. Straniero (3) ((1) Physics Department ``E. Fermi'', P.G. Prada Moroni (1, Teramo), University of Pisa; (2) INFN-Pisa; (3) INAF - Osservatorio Astronomico di Collurania","submitted_at":"2009-09-15T08:28:49Z","abstract_excerpt":"The lower limit for the mass of white dwarfs (WDs) with C-O core is commonly assumed to be roughly 0.5 Msun. As a consequence, WDs of lower masses are usually identified as He-core remnants. However, when the initial mass of the progenitor star is in between 1.8 and 3 Msun, which corresponds to the so called red giant (RGB) phase transition, the mass of the H-exhausted core at the tip of the RGB is 0.3 < M_H/Msun < 0.5. Prompted by this well known result of stellar evolution theory, we investigate the possibility to form C-O WDs with mass M < 0.5 Msun. The pre-WD evolution of stars with initia"},"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":"0909.2742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-09-15T08:28:49Z","cross_cats_sorted":[],"title_canon_sha256":"b780fd7ffda63c9e2b2e74ec2d0696b5e427b7b594d96fc241c663c222cb7699","abstract_canon_sha256":"6f6a624ea8b22aa296d673a36acdf0296e144116d8acbf49c9ddf2d320f09ca7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:47.808850Z","signature_b64":"vtxIsrAwxeR6zfL68wqm09jT+idWJ5/f8aFrlnn5mhzDZMm6QIX3AwR3bbBYwyftR4dVmXOvU+BD24aMzNKoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f3828f05954fb785f33a61dcd26f860af9eccca5233af50b4d749042925134ae","last_reissued_at":"2026-05-18T02:11:47.808204Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:47.808204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Very low mass white dwarfs with a C-O core","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"2), O. Straniero (3) ((1) Physics Department ``E. Fermi'', P.G. Prada Moroni (1, Teramo), University of Pisa; (2) INFN-Pisa; (3) INAF - Osservatorio Astronomico di Collurania","submitted_at":"2009-09-15T08:28:49Z","abstract_excerpt":"The lower limit for the mass of white dwarfs (WDs) with C-O core is commonly assumed to be roughly 0.5 Msun. As a consequence, WDs of lower masses are usually identified as He-core remnants. However, when the initial mass of the progenitor star is in between 1.8 and 3 Msun, which corresponds to the so called red giant (RGB) phase transition, the mass of the H-exhausted core at the tip of the RGB is 0.3 < M_H/Msun < 0.5. Prompted by this well known result of stellar evolution theory, we investigate the possibility to form C-O WDs with mass M < 0.5 Msun. The pre-WD evolution of stars with initia"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2742","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":"0909.2742","created_at":"2026-05-18T02:11:47.808282+00:00"},{"alias_kind":"arxiv_version","alias_value":"0909.2742v1","created_at":"2026-05-18T02:11:47.808282+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2742","created_at":"2026-05-18T02:11:47.808282+00:00"},{"alias_kind":"pith_short_12","alias_value":"6OBI6BMVJ63Y","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"6OBI6BMVJ63YL4Z2","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"6OBI6BMV","created_at":"2026-05-18T12:25:58.837520+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/6OBI6BMVJ63YL4Z2MHONE34GBL","json":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL.json","graph_json":"https://pith.science/api/pith-number/6OBI6BMVJ63YL4Z2MHONE34GBL/graph.json","events_json":"https://pith.science/api/pith-number/6OBI6BMVJ63YL4Z2MHONE34GBL/events.json","paper":"https://pith.science/paper/6OBI6BMV"},"agent_actions":{"view_html":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL","download_json":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL.json","view_paper":"https://pith.science/paper/6OBI6BMV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0909.2742&json=true","fetch_graph":"https://pith.science/api/pith-number/6OBI6BMVJ63YL4Z2MHONE34GBL/graph.json","fetch_events":"https://pith.science/api/pith-number/6OBI6BMVJ63YL4Z2MHONE34GBL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL/action/storage_attestation","attest_author":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL/action/author_attestation","sign_citation":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL/action/citation_signature","submit_replication":"https://pith.science/pith/6OBI6BMVJ63YL4Z2MHONE34GBL/action/replication_record"}},"created_at":"2026-05-18T02:11:47.808282+00:00","updated_at":"2026-05-18T02:11:47.808282+00:00"}