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In this paper we investigate three possible channels for helium white-dwarf + red-giant mergers, and find that, amongst the three, only a high-mass helium white dwarf subducted into a low core-mass red giant can make an ear"},"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":"1301.0766","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-04T16:41:46Z","cross_cats_sorted":[],"title_canon_sha256":"1dbb09d8421e484037cf78eecdb098d08153033d1cfa1373beeac9528167b6c7","abstract_canon_sha256":"2e18da3959d2f196af8db1484e3193238a12074eba6b4b5eab42c082ffcb4793"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:37:07.634893Z","signature_b64":"xgzbUvRUSnGeafcck3Z+oEzPl3UfeUsVaADqtIldiujxsXZJIHp8hRoznI2m8OMvlKVE9hZ1bmER4Zz6nrZBAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23eb697d44b6f1349af6894de65185a8cb93cd50bbda589e716b0101bea66698","last_reissued_at":"2026-05-18T03:37:07.634091Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:37:07.634091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"White-dwarf red-giant mergers, early-type R stars, J stars and lithium","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. 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